Eastern Mojave Vegetation Field Notes (Continued)  
 

Tom Schweich  

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Contents
Literature Cited
 When I first read the field notes of Annie Alexander and Louise Kellogg, I was fascinated by the descriptions they wrote about the places they went and the plants and animals they found there. By publishing my field notes on the Internet I hope to follow a little bit in their tradition.

 

 

   

2020

 

   

Wednesday, 1 January 2020

 

Other articles:
• SE-5405:   at trailhead;
Full Size ImageWhere the route diverges from the highway.
Full Size ImageJust a little way down the trial with Rachel.  

We dropped Rachel off at this trailhead, to pick her up near Almaden de la Plata later.
Full Size Image
Down the trail.

Locations: Cortijo El Berrocal.
Full Size ImageSpecial old oak tree at Cortijo El Berrocal.  

Cortijo El Berrocal, with a visitor center, in a Parque Natural in the Seirra Norte de Sevilla. The visitor center was closed when we visited.

Full Size ImageAlmaden de la Plata from the Mirador del Cerro del Calvario.  
 

Locations: El Real de la Jara.
Full Size ImageView across El Real de la Jara to Cortijo de Aguado
Full Size ImageNorth of El Real de la Jara.  

Full Size Image
Castillo de los Torres, over there in Extremadura.
Full Size Image
Sheep.
Full Size Image
Cheryl and Rachel still in Andalucia.
Full Size Image
The Castillo de los Torres.
 

   

Thursday, 2 January 2020

 

Locations: Santa Olalla del Cala.
Full Size ImageThe Castillo de Santa Olalla del Cala.
Full Size ImageThe Ermita  

First stop at Hostal Restaurante Carmelo for a little breakfast, then west of town for a view of the Castillo de Santa Olalla de Cala. Unfortunately the castle was closed for repairs.

Literature Cited:
- Venhuis, C., and J. G. B. Oostermeijer, 2004.

Locations: Aljucen.
Full Size ImageChurch of San Andres in Aljucen.  

Aljucen for coffee and a visit.

Full Size Image
Door of the Church of San Andres.
Full Size Image
Interpretive panel for Via de la Plata.
Serapias perez-chiscanoi, a rare species of orchid, is endemic to western Portugal and western Spain, especially in the Guadiana basin around Aljucen. The type locality is near Santa Amalia that is east of Merida (Venhuis and Oostermeijer, 2004).

Locations: Santa Lucia del Trampal.
Full Size ImageGoats on the road.
Full Size ImageThe Basilica de Santa Lucia del Trampal.  

The Basilica Santa Lucia del Trampal
  Lunch at a park on the banks of Rio Aljucen.

Locations: Dolmen de Lacara.
Full Size ImageHiking to the Dolmen.
Full Size ImageInterpretive Panel.  

Dolmen de Lacara
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Interpretive Panel.
Full Size Image
The opening.
Full Size Image
On the dolmen.
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The corriedor of the dolmen.

Locations: Merida.
Full Size ImageThe Roman aqueduct in Merida.  

Merida

The roman aqueduct over Rio Guadiana.

Locations: Merida.
Full Size ImageThe Temple of Diana.  

The Temple of Diana at night. We ate in an Extremadura restaurant nearby.

   

Friday 3 January 2020

 

Locations: Merida.
Full Size ImageEntrance to Anfiteatro Romano.
Full Size ImageThe Roman Amphitheater.  

Visit to the Roman Amphitheater.
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Entrance to Roman Amphitheater.
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Architectural details of special box for local elite.

Locations: Merida.
Full Size ImageThe Roman Theater.  

Visit to the Roman Theater.

Locations: Merida.
Full Size ImageGeneral view of the crypt under the Museo Nacional de Arte Romano.
Full Size ImageFrescos and columns found under the museum while it was under construction.  

We arrived at the Museo Nacional de Arte Romano just as a tour of the crypt was forming.

Locations: Merida.
Full Size ImageInside the National Museum of Roman Art.
Full Size ImageInside the National Museum of Roman Art.  

Visited the National Museum of Roman Art.
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A large mosiac on display.

Locations: Merida.
Full Size ImageThe Roman bridge.  

A walk across the Roman bridge.

Locations: Merida.
Full Size ImageInside the Visigoth museum.
Full Size ImageA carved Visigoth capital.  

After lunch visit to the Visigoth Museum.

Locations: Merida.
Full Size ImageUnderneath the Basilica de Santa Eulalia.
Full Size ImageInside the Basilica de Santa Eulalia.  

A visit to the Basilica de Santa Eulalia. Going underneath was free, visiting the church above was 2.

   

Saturday, 4 January 2020

 

Locations: Nossa Senhora da Graa Fort.
Full Size ImageNossa Senhora da Graa Fort
Full Size ImageView to Elvas from Nossa Senhora da Graa Fort  

Nossa Senhora da Graa Fort

Locations: Elvas.
Full Size ImageArco de Santa Clara, Elvas, Portugal.
Full Size ImageInside the Igreja das Dominicas  

A visit to Elvas.
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An impromptu concert in the Praa da Repblica
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Esquina Gate, Elvas, Portugal

Full Size ImageWhere we stopped for lunch.  
We just pulled off the highway about half way between Elvas and Evora. Passed through an interesting marble mining area near Vila Vicosa.

Locations: Cromeleque dos Almendres.
Full Size ImageCheryl and Rachel at Cromeleque dos Almendres
Full Size ImageEvora as seen from Cromeleque dos Almendres.  

We went to see the Neolithic monument called Cromeleque dos Almendres.
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Carved rock at Cromeleque dos Almendres.

   

Sunday, 5 January 2020

 

Locations: Evora.
Full Size ImageChapel of Bones
Full Size ImageInterior of the Igreja de So Francisco.  

A visit to the Chapel of the Bones.

Chapel of Bones

Built in the first half of the 17th century, as an extension of the Chapter House of the convent of So Francisco, the Chapel of the Bones is an invitation to reflect on the transitory nature of the human condition, summarised in the words above its entrance:

WE BONES HERE, FOR YOURS AWAIT.
The decoration of the ceiling, dating from 1810 and full of symbols, allegories and quotations from the Holy Scriptures, adds the affirmation of another Life in the splendor of the glory of God.
At the back of the chapel is the 18th-century tomb chest of the founders of the Convent (13th century) and the floor tomb of Bishop Jacinto Carlos da Silveira, who died during the invasion of vora by French troops, on 29 July 1808.
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"We bones here, for yours await"

Locations: Evora.
Full Size ImageEvora from the roof of the Cathedral.
Full Size ImageThe Cloisters inside the Cathedral of Evora.  

Visit to the Cathedral of Evora, including a climb to the roof.
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An altar in the Cathedral of Evora.
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The nave in the Cathedral of Evora.

Locations: Evora.
Full Size ImageCoffee in the Jardim Diana.  

Coffee in the Jardim Diana.

Locations: Evora.
Full Size ImageInside the Igreja de So Joo Evangelista
Full Size ImageThe altar of the Igreja de So Joo Evangelista  

Igreja de So Joo Evangelista

Locations: Evora.
Full Size ImageArches from the water aqueduct incorporated into buildings.  

 

   

Monday, 6 January 2020

 

Locations: Evora.
Full Size ImageLeaving our rented house.  

Leaving Evora

Locations: Reguengos de Monsaraz.
Full Size ImageUnique church in Reguengos de Monsaraz.  

Short stop in Reguengos de Monsaraz

Locations: Monsaraz. Mourao.
Full Size ImageChurch restoration, Igreja Matriz de Nossa Sra sad Candeias.
Full Size ImageCastle walls in Mourao; Monsaraz in the distance.  

Another short stop, this time in Mourao.

 

   

March 2020

 

 

Other articles:
• 8th Street:   at Church Ditch;   at trail;
Full Size ImageTemporary bridge over Church Ditch.
Full Size ImageNew concrete box culvert for Church Ditch under 8th Street.  

Saturday, 14 March 2020

Yesterday, the temporary bridge over the Church Street Ditch opened.
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Temporary bridge over Church Ditch.
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Temporary bridge over Church Ditch.

Other articles:
• Tilting Mesa Trail:   at pond;   near eph pond;

Locations: Vaca Lake.
Full Size ImageHorsepeople riding in the closed area at Vaca Lake.  

Hike across North Table Mountain from Cottonwood Canyon to North Table Mountain Trailhead.
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Open Space trail crew trying to repair damage by Xcel trucks.
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Open Space trail crew trying to repair damage by Xcel trucks.

   

Tuesday, 17 March 2020

Download GIS data for Spain: http://centrodedescargas.cnig.es

 

Literature Cited:
- Fernandez-Mazuecos, Mario, Jose Luis Blanco-Pastor, and Pablo Vargas, 2013.
- Sutton, D. A., 1988.

Other articles:
• Field Notes:  Coll. No. 2077, 14 Jun 2019;
• Glossary:  homoplasy;  

2077 

Sunday, 22 March 2020

Pivotal results. Linaria and Nuttallanthus constituted a monophyletic group within the Antirrhineae. Linaria was recovered as a paraphyletic group with Nuttallanthus nested within it. Six major clades were recognized within the Linaria-Nuttallanthus clade. The seed wing, a structure that has been extensively used in systematic treatments, appears to be a homoplasious character in Linaria (Fernandez-Mazuecos, et al., 2013)

 

Locations: Colorado School of Mines Survey Field.
Full Size ImageHooker's Easter Daisy (Townsendia hookeri just starting to bloom in the survey field.  

Tuesday, 7 April 2020

Survey Field, Townsendia hookeri just starting to bloom. Along with Lomatium officinale, Taraxacum officinale, Alyssum simplex, Erodium cicutarium, Claytonia rosea, and Viola nuttallii.

 
Full Size ImageA bit of snow on 16 April 2020  

Thursday, 16 April 2002

It snowed today.

 

Locations: Apex Park - Northern Parcel.
Full Size ImageKinney Run and south Golden from Apex Park.
Full Size ImageDowntown and north Golden from Apex Park.  

Tuesday, 21 April

Restricted area of Apex Park.

Full Size ImageColl. No. 2246, Holosteum umbellatum
Full Size ImageInflorescence of Coll. No. 2246, Holosteum umbellatum  
2246  Tiny little annual, opposite leaves, 5 sepals free, 5 petals free white laciniate, 2 stigmas.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Caryophyllaceae

Holosteum umbellatum L.  Jagged Chickweed.

Apex Park - Northern Parcel, Jefferson County, Colorado. Approximate center of area, mid slope, northeast-facing nose of ridge, 4.7 km. south of the GNIS location of Golden. 39.7233N, 105.2233W. WGS 1984 Tiny annual, white petals with jagged ends. Also here: Collinsia parviflora.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2246. 21-Apr-2020

Coll. No. 2246, 21 April 2020: Annual, to 5 cm.; Stem, single, glandular distally; Stipules, absent; Leaves, cauline, opposite, 6 mm. × 1.7 mm. wide, oval, margins, entire, glandular; Inflorescence, umbellate; Pedicels, 2.5-9.0 mm., reflexed in flower; Sepals, #5, all distinct, 2.7-3.0 mm. × 1.2 mm. wide, ovate, green, margin scarious; Petals, #5, 2.5 mm. × 1.2 mm. wide, deltoid, tip erose; Stamens, #5; Styles, #2(3?), 1 entire, 1 forked (with 2 stigmas).


Full Size ImageColl. No. 2247, Micranthes rhomboidea  
2247  Scappose, glomular head, white flowers -- certainly Saxifragiceae, maybe Micranthes rhomboidea.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Saxifragaceae

Micranthes rhomboidea (Greene) Small.  Diamondleaf Saxifrage.

Apex Park - Northern Parcel, Jefferson County, Colorado. Approximate mid-slope, second gulch north of area boundary, northeast-facing slope near ephemeral stream, 4.9 km. south of the GNIS location of Golden. 39.722N, 105.2216W. WGS 1984 Elev. 1984 m. Wet, springy area, no running water.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2247. 21-Apr-2020

 

Locations: North Washington Open Space.  

Friday, 24 April 2020

North Washington Open Space. No collections, a couple of observations, need to return in a week for Chorispora tenella in fruit.

 

Other articles:
• Golden Checklist Flora:  Apex Park;
• Grubstake Trail:   along the trail;

Locations: Apex Park - Northern Parcel.
Full Size ImageGolden, and North and South Table Mountains, from Apex Park.  

Saturday, 25 April 2020

Apex Park, Restricted Area.
Full Size Image
Widened Grubstake Trail.

Full Size ImageHabitat of Coll. No. 2248, Ranunculus glaberrimus
Full Size ImageColl. No. 2248, Ranunculus glaberrimus var. ellipticus  
2248  Ranunculus sp., probably R. glaberrumus, the Sagebrush buttercup.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Ranunculaceae

Ranunculus glaberrimus Hook. var. ellipticus (Greene) Greene.  Sagebrush Buttercup.

Apex Park - Northern Parcel, Jefferson County, Colorado. Rocky Mountain Front Range, approximate mid-slope, very close to the southern boundary of the north parcel, 5.0 km. south of the GNIS location of Golden 39.721N, 105.2211W. WGS 1984 Elev. 2080 m. Northeast-facing rocky slope, but the plants are growing in deep humus between the rocks.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2248. 25-Apr-2020

Coll. No. 2248 25 Apr 2020, characters observed: Perennial herb, to 11 cm., terrestrial; Stem, glabrous; Leaves, basal, petiole, 40 mm., blade, simple, 25 mm. × 13 mm. wide, elliptic to rhomboid, cauline, alternate, ternate, 24 mm. × 24 mm. wide; Flowers, actinomorphic; Sepals, 4.5 mm., lower surface few long soft white hairs; Petals, #5, 6 mm. × 4.5 mm. wide, bright yellow, not spurred; Achenes, in a globose cluster 5 mm. × 8 mm. wide, many in number, 1.5 mm. × 1.3 mm. wide, slightly hairy.

  2249  Claytonia rosea

Plants of Jefferson County Open Space
Jefferson County, Colorado
Montiaceae

Claytonia rosea Rydb.  Rocky Mountain Springbeauty.

Apex Park - Northern Parcel, Jefferson County, Colorado. On an old trail, north of and below the Grubstake Trail, 4.85 km. south of the GNIS location of Golden. 39.7223N, 105.226W. WGS 1984 Elev. 2075 m. In deep forest duff, mixed douglas fir and ponderosa pine forest, and shrubs.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2249. 25-Apr-2020


Full Size ImageHabitat of Coll. No. 2250, Collinsia parviflora
Full Size ImageColl. No. 2260, Collinsia parviflora  
2250  Collinsia parviflora

Plants of Jefferson County Open Space
Jefferson County, Colorado
Plantaginaceae

Collinsia parviflora Lindl.  Maiden Blue-eyed Mary.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northern part of Apex Open Space Park, about mid-slope, along an old road or trail, 4.93 km south of the GNIS location of Golden. 39.7215N, 105.223W. WGS 1984 Elev. 2039 m. Gravelly swale, wet but no runnng water, with small shrubs, grasses, etc.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2250. 25-Apr-2020

 

Locations: Kinney Run.
Full Size ImageTwo basal leaves of Physaria.  

Monday, 27 April 2020

 

Full Size ImageColl. No. 2251, Townsendia hookeri, ray fruit (left) and disk fruit (right).  
2251  Townsendia hookeri

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Townsendia hookeri Beaman.  Hooker's Townsend Daisy.

Deadman Gulch, Jefferson County, Colorado. High plains at the base of the Rocky Mountain Front Range, linear northwest trending dry gravelly area, either in a trace of the Golden Fault or adjacent to it, 3.15 km. south of the GNIS location of Golden. 39.734N, 105.217W. WGS 1984 Elev. 1818 m. The type locality of T. hookeri is Mount Vernon Canyon, about 5 km. south. Also collected here: Packera plattensis, Euphorbia brachycera, and Ipomopsis spicata.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2251. 27-Apr-2020

 

Other articles:
• Golden Checklist Flora:   Tin Cup Ridge;

Locations: Tin Cup Ridge.  

Thursday, 30 April 2020

Tin Cup Ridge

Other articles:
• Golden Checklist Flora:  Balsamorhiza sagittata;
• Glossary:  disjunct;
Full Size ImageColl. No. 2252, Balsamorhiza sagittata
Full Size ImageColl. No. 2252, Balsamorhiza sagittata  

2252  Balsamorhiza sagittata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Balsamorhiza sagittata (Pursh) Nutt.  Arrow-Leaf Balsamroot.

Tin Cup Ridge, Jefferson County, Colorado. Lower slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, a hogback at the base of the Rocky Mountain Front Range, 6.63 km. south of the GNIS location of Golden. 39.7134N, 105.2044W. WGS 1984 Elev. 1898 m. About 24 plants here, about half of which are in bloom. Another colony of 60-100 plants a little higher on the hogback. Usually described as a western slope plant. Perhaps planted here. Regardless, it is naturalized and spreading, if not native.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2252. 30-Apr-2020

Full Size Image
Voucher of Coll. No. 2252, Balsanorhiza sagittata

Other articles:
• Golden Checklist Flora:  Saskatoon Serviceberry;
Full Size ImageColl. No. 2253, Amelanchier alnifolia  

2253  Prunus ??? no maybe Amelanchier alnifolia.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem.  Saskatoon Serviceberry.

Tin Cup Ridge, Jefferson County, Colorado. Along the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, a hogback at the base of the Rocky Mountain Front Range, 6.63 km. south of the GNIS location of Golden. 39.7116N, 105.2041W. WGS 1984 Elev. 1930 m. Small plant, less than 1 meter in diameter. Also at this location: Physaria montana.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2253. 30-Apr-2020

 

Other articles:
• Golden Checklist Flora:  Lookout Mtn;

Locations: Windy Saddle Park.
Full Size ImageUnnamed gulch in Windy Saddle Park.  

Monday, 4 May 2020

Full Size Image
Tent caterpillars on Prunus virginiana
Full Size Image
Upper part of unnamed gulch.
Full Size Image
View down the unnamed gulch.
 

Full Size ImageHabitat of Coll. No. 2254, Leucocrinum montanum  
2254  Leucocrinum montanum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Anthericeae

Leucocrinum montanum Nutt. ex A. Gray.  Star Lily.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Northernmost Survey Field, highest plains at the base of Lookout Mountain and Rocky Mountain Front Range, exposed east-facing alluvial slope, many plants in bloom. 39.739N, 105.2305W. WGS 1984 Elev. 1870 m. Also collected nearby: Prunus virginia, Lepidium campestre, Mertensia lanceolata, Ribes cereum, and Lithospermum incisum.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2254. 4-May-2020


Full Size ImageInflorescence of Coll. No. 2255, Carex occidentalis  
2255  Carex sp.

 

Other articles:
• Bonanza Trail:   at Grubstake W;
• Social Trail:   at Parkview;  mid-trail;
• Golden Checklist Flora:  Apex Park;
• Grubstake Trail:   at Bonanza;
• Parkview Avenue:   at end;

Locations: Apex Park. Apex Park - Northern Parcel.
Full Size ImageWest end of social trail.  

Wednesday, 6 May 2020

Full Size Image
Looking south in Apex Park.
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Looking toward Parkview Avenue from social trail.
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West end of Bonanza Trail at the Grubstake Trail.
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Grubstake Trail at its west junction of the Bonanza Trail.
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Gentle upper slopes of Apex Park.
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Corner of Apex Park.
Full Size Image
Deadman Gulch in Apex Park.
 
  2256  Leucocrinum montanum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Anthericeae

Leucocrinum montanum Nutt. ex A. Gray.  Star Lily.

Apex Park - Northern Parcel, Jefferson County, Colorado. North Parcel, western edge, Rocky Mountain Front Range, top of the initial slope, small ravine, 4.8 km south-southwest of the GNIS location of Golden. 39.7229N, 105.2289W. WGS 1984 Elev. 2044 m. Southeast facing slope, open grassland at edge of ponderosa pine woodland, many leaves have been eaten. Also collected here: Viola nuttallii, and Cerastium arvense.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2256. 6-May-2020

  2257  Viola nuttallii.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Violaceae

Viola nuttallii Pursh.  Nuttall's Violet.

Apex Park - Northern Parcel, Jefferson County, Colorado. North Parcel, western edge, Rocky Mountain Front Range, top of the initial slope, small ravine, 4.8 km south-southwest of the GNIS location of Golden. 39.7229N, 105.2289W. WGS 1984 Elev. 2101 m. Few plants, southeast facing slope of ravine, open grassland at edge of ponderosa pine woodland. Also collected here: Leucocrinum montanum, and Cerastium arvense.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2257. 6-May-2020

  2258  Cerastium arvense var. strictum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Caryophyllaceae

Cerastium arvense L. ssp. strictum Gaudin.  Field Chickweed.

Apex Park - Northern Parcel, Jefferson County, Colorado. North Parcel, western edge, Rocky Mountain Front Range, top of the initial slope, small ravine, 4.7 km south-southwest of the GNIS location of Golden. 39.7235N, 105.2289W. WGS 1984 Elev. 2094 m. Drier divide between two swales, open grassland at edge of ponderosa pine woodland, one Delphinium nuttallii here. Also collected here: Leucocrinum montanum, and Viola nuttallii.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2258. 6-May-2020


Full Size ImageColl. No. 2259, Viola canadensis  
2259  Viola canadensis

Plants of Jefferson County Open Space
Jefferson County, Colorado
Violaceae

Viola canadensis L.  Canadian White Violet.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northwest corner of Apex Park, wooded south side of Deadman Gulch, 4.65 km south southeast of the GNIS location of Golden. 39.7241N, 105.2296W. WGS 1984 Elev. 2104 m. Early spring blooming, deep shade, elk bedding area. Also collected here Mertensia lanceolata, a Prunus, possibly a domestic sp., and Euphorbia myrsinites.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2259. 6-May-2020

  2260  Mertensia lanceolata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Boraginaceae

Mertensia lanceolata (Pursh) DC.  Prairie Bluebells.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northwest corner of Apex Park, east-facing slope north of Deadman Gulch, 4.60 km south southeast of the GNIS location of Golden. 39.7244N, 105.2295W. WGS 1984 Elev. 2095 m. Openings in ponderosa pine woodland, also seen here; Mondarda fistulosa, Berberis reptans, and Delphinium nuttallii.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2260. 6-May-2020

  2261  Prunus sp. or Malus

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Prunus americana Marshall.  American Plum.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northwest corner of Apex Park, east-facing slope north of Deadman Gulch, 4.59 km south southwest of the GNIS location of Golden. 39.7245N, 105.2294W. WGS 1984 Elev. 2094 m. Also collected nearby, Viola canadensis in Ponderosa pine woodland, Mertensia lanceolata, and Euphorbia myrsinites.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2261. 6-May-2020

Other articles:
• Golden Checklist Flora:  Micranthes rhomboidea;  Micranthes rhomboidea, additional information;
Full Size ImageColl. No. 2262, Micranthes rhomboidea
Full Size ImageColl. No. 2262, Micranthes rhomboidea  

2262  Micranthes rhomboidea.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Saxifragaceae

Micranthes rhomboidea (Greene) Small.  Diamondleaf Saxifrage.

Apex Park - Northern Parcel, Jefferson County, Colorado. South side of Deadman Gulch, near the top of the initial Front Range scarp, 4.38 km. south southeast of the GNIS location of Golden. 39.7255N, 105.2255W. WGS 1984 Elev. 2041 m. Flower. Openings in Ponderosa Pine Woodland. Also collected here: Collinsia parviflora.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2262. 6-May-2020

  2262.1  Collinsia parviflora

 

Literature Cited:
- Savoca, Matthew, 2019.
- Weber, Alex K., Michael W. Weber, and Matthew S. Savoca, 2019.

Other articles:
• Golden Checklist Flora:  Dakota Ridge;
• Recreational Trail (Pine Ridge Estates):   just south of spur;

Locations: Cressmans Gulch (lower). Dakota Ridge.  

Saturday, 9 May 2020

South end of Dakota Ridge, aka North Hogback.
Full Size Image
Parking and overflow parking for North Table Mountain.
Full Size Image
It looks like a Titleist to me!
Full Size Image
South end of Dakota Ridge.
Full Size Image
Yard waste disposal in City of Golden open space on the banks of Cressman Gulch.
Full Size Image
Thirteen golf balls collected on Dakota Ridge.
  2263  Euphorbia esula.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Euphorbiaceae

Euphorbia esula L.  Leafy Spurge.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.15 km. north northwest of the GNIS location of Golden. 39.7811N, 105.238W. WGS 1984 Elev. 1850 m. Grassy southwest facing slope. Many plants here. Colorado Noxious Weed List B.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2263. 9-May-2020

  2264  Alyssum simplex.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Brassicaceae

Alyssum simplex Rudolphi.  European Madwort.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.15 km. north northwest of the GNIS location of Golden. 39.7811N, 105.2378W. WGS 1984 Elev. 1869 m. Grassy southwest facing slope. Also collected here: Erodium cicutarium, Euphorbia esula, and Castilleja integra.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2264. 9-May-2020

  2264.1  Erodium cicutarium.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Geraniaceae

Erodium cicutarium (L.) L'Her. ex Aiton.  Redstem Stork's Bill.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.15 km. north northwest of the GNIS location of Golden. 39.7811N, 105.2379W. WGS 1984 Elev. 1869 m. Small plants. Flower and fruit. Grassy southwest facing slope. Also collected here: Alyssum simplex, Euphorbia esula, and Castilleja integra.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2264.1 9-May-2020

  2265  Cerastium arvense strictum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Caryophyllaceae

Cerastium arvense L. ssp. strictum Gaudin.  Field Chickweed.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.16 km. north northwest of the GNIS location of Golden. 39.7813N, 105.2377W. WGS 1984 Elev. 1873 m. Southwest-facing slope, with Artemisia ludoviciana, Linum lewisii, and Grindelia squarrosa.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2265. 9-May-2020

  2265.1  Lomatium orientale.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Apiaceae

Lomatium orientale J.M. Coult. & Rose.  Northern Idaho Biscuitroot.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.16 km. north northwest of the GNIS location of Golden. 39.7813N, 105.2377W. WGS 1984 Elev. 1873 m. Fruit. Mixed-grass prairie just below foothills mountain mahogany shrubland; collected here: Cerastium arvense, Scutellaria brittonii, Amelanchier alnifolia, nearby: Cercocarpus montanus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2265.1 9-May-2020

  2266  Scutellaria brittonii.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Lamiaceae

Scutellaria brittonii Porter.  Britton's Skullcap.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.16 km. north northwest of the GNIS location of Golden. 39.7813N, 105.2376W. WGS 1984 Elev. 1874 m. Mixed-grass prairie just below foothills mountain mahogany shrubland; collected here: Cerastium arvense, Lomatium orientale, Amelanchier alnifolia, nearby: Cercocarpus montanus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2266. 9-May-2020

Other articles:
• Golden Checklist Flora:  Saskatoon Serviceberry;  

2267  Amelanchier alnifolia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Rosaceae

Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem.  Saskatoon Serviceberry.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.16 km. north northwest of the GNIS location of Golden. 39.7813N, 105.2375W. WGS 1984 Elev. 1877 m. Just one shrub, unarmed. Southwest slope. Above the mixed-grass prairie just into foothills mountain mahogany shrubland; collected here: Ribes cereum, Cercocarpus montanus, and Potentilla recta; nearby: Lomatium orientale, and Scutellaria brittonii.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2267. 9-May-2020

  2268  Bromus tectorum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Bromus tectorum L.  Cheat Grass.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.16 km. north northwest of the GNIS location of Golden. 39.7813N, 105.2374W. WGS 1984 Elev. 1880 m. Southwest slope, near top of hogback; foothills mountain mahogany shrubland; also collected here: Ribes cereum, Amelanchier alnifolia, Cercocarpus montanus, Potentilla recta, and Viola nuttallii.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2268. 9-May-2020

  2269  Viola nuttallii.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Violaceae

Viola nuttallii Pursh.  Nuttall's Violet.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.15 km. north northwest of the GNIS location of Golden. 39.7814N, 105.2374W. WGS 1984 Elev. 1884 m. All were growing underneath Cercocarpus montanus shrubs. Mixed Foothill Shrubland; also collected here: Ribes cereum, Amelanchier alnifolia, Cercocarpus montanus, Potentilla recta, and Bromus tectorum,

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2269. 9-May-2020

  2270  Ribes cereum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Grossulariaceae

Ribes cereum Douglas.  Wax Currant.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.17 km. north northwest of the GNIS location of Golden. 39.7815N, 105.2373W. WGS 1984 Elev. 1882 m. Flowers pink. Most shrubs are Cercocarpus montanus with just a few R, cereum and one Amelanchier alnifolia, plus forbs such as Penstemon virens, Viola nuttallii, and Lappula occidentalis.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2270. 9-May-2020

Other articles:
• Golden Checklist Flora:  Cercocarpus montanus, additional information;
Full Size ImageColl. No. 2270.1, Cercocarpus montanus in bloom.  

2270.1  Cercocarpus montanus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Rosaceae

Cercocarpus montanus Raf.  Alder-Leaf Mountain Mahogany.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.17 km. north northwest of the GNIS location of Golden. 39.7815N, 105.2373W. WGS 1984 Elev. 1882 m. In bloom, no fruit yet. Foothills shrubland, primarily C. montanus, with Ribes cereum, Rhus trilobata, and Amelanchier alnifolia, and forbs: Physaria montana, Penstemon virens, and Viola nuttallii,

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2270.1 9-May-2020

  2271  Penstemon virens.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Plantaginaceae

Penstemon virens Pennell ex Rydb.  Front Range Beardtongue.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.19 km. north northwest of the GNIS location of Golden. 39.7817N, 105.2372W. WGS 1984 Elev. 1897 m. Flowers blue. In upturned rocks on the spine of the hogback, also seen or collected here: Eriogonum umbellatum, Physaria montana, Ribes cereum, Coryphantha vivipara, and Cercocarpus montanus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2271. 9-May-2020

  2271.1  Physaria montana.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Brassicaceae

Physaria montana (A. Gray) Greene.  Mountain Bladderpod.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.19 km. north northwest of the GNIS location of Golden. 39.7817N, 105.2372W. WGS 1984 Elev. 1897 m. In upturned rocks on the spine of the hogback, also seen or collected here: Eriogonum umbellatum, Penstemon virens, Ribes cereum, Coryphantha vivipara, and Cercocarpus montanus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2271.1 9-May-2020

  2272  Physaria montana.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Brassicaceae

Physaria montana (A. Gray) Greene.  Mountain Bladderpod.

Dakota Ridge, Jefferson County, Colorado. Southern end of the hogback in northernmost Golden, 4.21 km. north northwest of the GNIS location of Golden. 39.7818N, 105.2373W. WGS 1984 Elev. 1898 m. In upturned rocks on the spine of the hogback, also seen or collected here: Eriogonum umbellatum, Penstemon virens, Ribes cereum, Coryphantha vivipara, and Cercocarpus montanus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2272. 9-May-2020

 

Locations: North Washington Open Space. Tucker Gulch (lower).
Full Size ImageAstragalus crassicarpus “Groundplum Milkvetch”
Full Size ImageSenecio integerrimus “Columbia Ragwort” in the North Washington Open Space.  

Tuesday, 12 May 2020

North Washington Open Space and Tucker Gulch.
  2273  Chorispora tenella.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Brassicaceae

Chorispora tenella (Pall.) DC.  Crossflower.

North Washington Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 2.24 km. northwest of the GNIS location of Golden. 39.7687N, 105.2318W. WGS 1984 Elev. 1801 m. Beside the primary east-west social trail, in an area mowed by adjacent private landowners in an effort to widen the social trail. Also collected here: Chenopodium album, Cirsium arvense, Lactuca serriola, and Bromus inermis.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2273. 12-May-2020

Other articles:
• Tucker Gulch Trail:   near 1st;
Full Size ImageColl. No. 2274, Ranunculus sp.
Full Size ImageMore Ranunculus sp. Nearby.  

2274  Ranunculus sp.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Ranunculaceae

Ranunculus acris L.  Tall Buttercup.

Tucker Gulch (lower), Jefferson County, Colorado. Creekside just below the First Street Bridge, 1.69 km. north northwest of the GNIS location of Golden 39.7665N, 105.2265W. WGS 1984 Elev. 1761 m. Rooted in the lowest bank of the creek. Also collected nearby: Chorispora tenella, Euphorbia esula, and Poa bulbosa.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2274. 12-May-2020

Coll. No. 2274, 12 May 2020, characters observed: Perennial herb, to 30 cm., aquatic; Leaves, mostly basal with few cauline, compound, deeply parted, margins toothed; Petioles, spreading hairs; Flowers, actinomorphic, sepals, present, 9 mm. × 2.5 mm. wide, ovate, hairy, white/translucent, petals, yellow, 17 mm. × 12.5 mm. wide, obovate, notched, not spurred; Pistil, many; Achenes, immature, small, glabrous, abruptly curved short beak.

Full Size Image
Coll. No. 2274, Ranunculus acris
Full Size Image
Flower of Coll. No. 2274, Ranunculus acris

Other articles:
• Golden Checklist Flora:  Alopecurus arundinaceus;
• Tucker Gulch Trail:   near 1st;
Full Size ImageColl. No. 2274.1, Alopecurus arundinaceus.  

2274.1  Alopecurus arundinaceus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Alopecurus arundinaceus Poir.  Creeping Reed Foxtail.

Tucker Gulch (lower), Jefferson County, Colorado. Creekside just below the First Street Bridge, 1.69 km. north northwest of the GNIS location of Golden 39.7665N, 105.2265W. WGS 1984 Elev. 1761 m. Rhizomatous. Rooted in the lowest bank of the creek. Also collected nearby: Chorispora tenella, Euphorbia esula, Ranunculus acris, and Poa bulbosa. Same as Coll. No. 1334, 11 May 2016, made 200 m. upstream.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2274.1 12-May-2020

Other articles:
• Tucker Gulch Trail:   cross stream;
Full Size ImageColl. No. 2275, Lemna minor  

2275  Lemna minor — Duck Weed.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Araceae

Lemna minor L.  Common Duckweed.

Tucker Gulch (lower), Jefferson County, Colorado. Running water in a little spring-fed perennial stream tributary to Tucker Gulch, 250 m. upstream of the First Street bridge, 1.98 km. north northwest of the GNIS location of Golden. 39.7682N, 105.2279W. WGS 1984 Elev. 1778 m. Also collected nearby: Salix alba, Berteroa incana, Capsella bursa-pastoris, Heterotheca villosa, Poa bulbosa, and Muscari botryoides.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2275. 12-May-2020

 

Other articles:
• Kinney Run Trail:  n. end of rock wall;

Locations: Kinney Run.
Full Size ImageGarden escapee? a Gazania?  

Friday, May 15, 2020

Kinney Run.
Full Size Image
Yard waste disposal in Kinney Run.
Full Size Image
Signage
Full Size Image
Signage
  2276  Physaria, sp., probably P. vitulifera

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Brassicaceae

Physaria vitulifera Rydb.  Roundtip Twinpod.

Kinney Run, Jefferson County, Colorado. Near the top of steep sandstone outcrops, east side of Kinney Run, just north of Tripp Ranch, 4.4 km. south of the GNIS location of Golden. 39.726N, 105.2128W. WGS 1984 Elev. 1848 m. Basal leaves nearly entire; fruit apical sinus deeper. Common on outcrops of Lykens sandstone. Colorado rare plant: G3/S3: Vulnerable, found locally in a restricted range. Collection made to rule out P. vitulifera × bellii.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2276. 15-May-2020

   

Saturday, 16 May 2020

 
  2277  Lunaria annua

 

Locations: Apex Park - Northern Parcel.
Full Size ImagePanorama from northeast corner of srudy area.
Full Size ImagePanorama from up near the water tank, the southeast corner of study area.  

Monday, 18 May 2020

Apex Park, Restricted Area, lower area.
  2278  Ribes aureum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Grossulariaceae

Ribes aureum Pursh.  Golden Currant.

Apex Park - Northern Parcel, Jefferson County, Colorado. A northeast corner of the north parcel where several ephemeral streams merge before flowing through the Stonebridge HOA enroute to Kinney Run, 4.45 km. south of the GNIS location of Golden 39.7249N, 105.2171W. WGS 1984 Elev. 1845 m. Common here, on the bank of ephemeral stream, with Prunus americana and Prunus virginiana; one frog heard croaking.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2278. 18-May-2020

  2279  Prunus sp., probably P. americana.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Prunus americana Marshall.  American Plum.

Apex Park - Northern Parcel, Jefferson County, Colorado. A northeast corner of the north parcel where several ephemeral streams merge before flowing through the Stonebridge HOA enroute to Kinney Run, 4.45 km. south of the GNIS location of Golden 39.7249N, 105.2171W. WGS 1984 Elev. 1848 m. Petals white. Flowers opening as leaves emerge. Common here, on the bank of ephemeral stream, with Ribes aureum and Prunus virginiana; one frog heard croaking.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2279. 18-May-2020

  2280  Potentilla fissa.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Potentilla fissa Nutt. ex Torr. & A.Gray.  Bigflower Cinquefoil.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast-facing nose of a small ridge, along the east side of the Apex Park - North parcel, 4.61 km. south of the GNIS location of Golden. 39.7238N, 105.2173W. WGS 1984 Elev. 1869 m. Petal color yellow. Mixed grass and patches of foothill shrubland, also seen or collected nearby: Rhus trilobata, Cynoglossum officinale, Antennaria parvifolia, Nothocalais cuspidata, and Senecio integerrimus.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2280. 18-May-2020

  2281  Senecio integerrimus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Senecio integerrimus Nutt.  Columbia Ragwort.

Apex Park - Northern Parcel, Jefferson County, Colorado. Along the eastern edge of the Apex Park - North parcel, in a little bowl, 4.70 km. south of the GNIS location of Golden. 39.7232N, 105.2173W. WGS 1984 Elev. 1866 m. Ray flower color yellow. Mixed grass and foothill shrubland, around the edge of a thicket of Prunus americana and Rhus trilobata. Cynoglossum officinale also here.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2281. 18-May-2020


Full Size ImageFlower parts of Coll. No. 2282, Antennaria parvifolia.  
2282  Antenaria parviflora.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Antennaria parvifolia Nutt.  Small-Leaf Pussytoes.

Apex Park - Northern Parcel, Jefferson County, Colorado. Along the eastern edge of the Apex Park - North parcel, open, north-facing aspect, 4.73 km. south of the GNIS location of Golden. 39.723N, 105.2174W. WGS 1984 Elev. 1878 m. Disk flower color white. Mixed grass and foothill shrubland, near a thicket of Prunus americana and Rhus trilobata; Senecio integerrimus and Cynoglossum officinale also here.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2282. 18-May-2020

Coll. No. 2282, 18 May 2020, characters observed: Perennial herb, to 7 cm., stoloniferous; Leaves, tomentose both sides, cuneate-oblanceolate; Inflorescence, bracts, 7 mm. × 1.7 mm. wide, lanceolate, arachnose; Heads, many; Involucre, 6.5 mm.; Phyllaries, 6 mm. × 2 mm. wide, proximal green, distal scarious and white.

  2283  Nothocalais cuspidata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Nothocalais cuspidata (Pursh) Greene.  Prairie False Dandelion.

Apex Park - Northern Parcel, Jefferson County, Colorado. Along the eastern edge of the Apex Park - North parcel, small, north-facing ridge, 75 m. north of the water tank, 4.81 km. south of the GNIS location of Golden. 39.7224N, 105.2176W. WGS 1984 Elev. 1881 m. Ray flower color yellow with reddish tinge abaxially. Among grasses below foothills shrubland; collected nearby: Chorispora tenella, Prunus virginiana, Antennaria parvifolia, and Senecio integerrimus. There were no N. cuspidata to be found in the nearby infestation of smooth brome.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2283. 18-May-2020

  2284  Chorispora tenella.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Chorispora tenella (Pall.) DC.  Crossflower.

Apex Park - Northern Parcel, Jefferson County, Colorado. Southeast corner of Apex Park - North parcel, along an ephemeral stream that drains northeastward through Stonebridge HOA to Deadman Gulch, 4.77 km. south of the GNIS location of Golden. 39.7227N, 105.218W. WGS 1984 Elev. 1877 M. Petal color magenta. Small patch, collected with Prunus virginiana.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2284. 18-May-2020

  2285  Prunus virginiana.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Prunus virginiana L.  Chokecherry.

Apex Park - Northern Parcel, Jefferson County, Colorado. Southeast corner of Apex Park - North parcel, along an ephemeral stream that drains northeastward through Stonebridge HOA to Deadman Gulch, 4.77 km. south of the GNIS location of Golden. 39.7227N, 105.218W. WGS 1984 Elev. 1873 m. Petal color white. In the bed of a small ephemeral watercourse.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2285. 18-May-2020

  2286  Rubus deliciousus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Rubus deliciosus Torr.  Delicious raspberry.

Apex Park - Northern Parcel, Jefferson County, Colorado. Southeast quadrant of the north parcel of Apex Park, 4.76 km. south of the GNIS location of Golden 39.7229N, 105.2189W. WGS 1984 Elev. 1882 m. Petal color white. Northeast-facing slope beside ravine, surrounded by Rhus trilobata.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2286. 18-May-2020


Full Size ImageColl. No. 2287, Docecatheon pulchellum  
2287  Dodecatheon pulchellum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Primulaceae

Dodecatheon pulchellum (Raf.) Merr.  Beautiful Shootingstar.

Apex Park - Northern Parcel, Jefferson County, Colorado. Lower part of Front Range scarp, approximate center of eastern quadrant of the Apex Park - North parcel, near the junction of two small ephemeral streams, 4.72 km. south of the GNIS location of Golden 39.723N, 105.2192W. WGS 1984 Elev. 1877 m. Petal color magenta. Wet soil, north to northeast-facing slope; also seen or collected here: Holodiscus dumosus, Rubus deliciosus, Toxicodendron rydbergii, Scrophularia lanceolata,

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2287. 18-May-2020

 

Other articles:
• Coyote Song Trail:   along trail;   at Prairie Falcon;   along trail;   along trail;   near s. trailhead;   at s. trailhead;
• Lyons Back Trail:   at overlook;
• Columbine Trail:   near Pass Trl;   at Pass Trl;

Locations: South Valley Park.
Full Size ImageThick stand of Mullein along the trail.  

Wednesday, 20 May 2020

South Valley Park, stalking the wild hmmm something or other.
Full Size Image
View along the trail.
Full Size Image
Prairie Falcon Trail to the left. Coyote Song Trail to the right.
Full Size Image
Coyote Song Trail to the south.
Full Size Image
Along the Coyote Song Trail.
Full Size Image
Panorama of South Valley Park from Lyons Back Trail.
Full Size Image
Columbine Trail north.
Full Size Image
Pass Trail into South Valley Park
Full Size Image
Columbine Trail south.
Full Size Image
Scutellaria brittonii “Britton's Skullcap”
Full Size Image
Cliffs near southernmost Coyote Song Trail
Full Size Image
Cliffs at South Trailhead.

Other articles:
• Golden Checklist Flora:  Quercus gambelii;
Full Size ImageColl. No. 2288, Quercus gambelii  

2288  Quercus gambelii.
  2289  Zigadenus paniculatus
  2290  Mertensia lanceolata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Boraginaceae

Mertensia lanceolata (Pursh) DC.  Prairie Bluebells.

South Valley Park, Jefferson County, Colorado. Between the Coyote Song Trail and the sandstone cliffs on the east side of the park, 4.81 km. west northwest of Chatfield Farms, Denver Botanic Garden. 39.5583N, 105.1418W. WGS 1984 Elev. 1821 m. Flowers pale blue. Also collected here: Quercus gambelii, Scutellaria brittonii, Collinsia parviflora, and Toxicoscordion paniculatum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2290. 20-May-2020

  2291  Scutellaria brittonii.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Lamiaceae

Scutellaria brittonii Porter.  Britton's Skullcap.

South Valley Park, Jefferson County, Colorado. Between the Coyote Song Trail and the sandstone cliffs on the east side of the park, 4.81 km. west northwest of Chatfield Farms, Denver Botanic Garden. 39.5584N, 105.1415W. WGS 1984 Elev. 1826 m. Openings in Gambel oaks. Also collected here: Quercus gambelii, Mertensia lanceolata, Collinsia parviflora, and Toxicoscordion paniculatum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2291. 20-May-2020


Full Size ImageColl. No. 2291.1, Claytonia rubra
Full Size ImageColl. No. 2291.1, Claytonia rubra  
2291.1 

Plants of Jefferson County Open Space
Jefferson County, Colorado
Montiaceae

Claytonia rubra (T. J. Howell) Tidestrom.  Red-Stem Springbeauty.

South Valley Park, Jefferson County, Colorado. Between the Coyote Song Trail and the sandstone cliffs on the east side of the park, 4.81 km. west northwest of Chatfield Farms, Denver Botanic Garden. 39.5584N, 105.1415W. WGS 1984 Elev. 1826 m. Openings in Gambel oaks. Also collected here: Quercus gambelii, Mertensia lanceolata, Scutellaria brittonii, Collinsia parviflora, and Toxicoscordion paniculatum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2291.1 20-May-2020

Coll. No. 2291.1, 20 May 2020, characters observed: Annuals to 7 cm., glabrous; Leaves, reddish in maturity, basal, petiole to 18 mm., blade trullate to rhomboid, 9 mm. × 9 mm. wide, cauline, a single pair, connate on one side; Flowers, 4 mm., pink; Seeds, 1.5 mm. × 1 mm. wide, shiny black, dimpled. Per FNANM likely subsp. depressa if infraspecific names are to be applied.


Full Size ImageInvolucre of Coll. No. 2292, Townsendia grandiflora  
2292  Townsendia grandiflora.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Townsendia grandiflora Nutt.  Largeflower Townsend Daisy.

South Valley Park, Jefferson County, Colorado. Between the Coyote Song Trail and the sandstone cliffs on the east side of the park, 4.66 km. west northwest of Chatfield Farms, Denver Botanic Garden. 39.5579N, 105.1407W. WGS 1984 Elev. 1835 m. Stiff sandstone-derived soil below cliffs, nearly bare of vegetation. Nearby: Quercus gambelii, Cryptantha virgata, Lappula occidentalis, Mertensia lanceolata, Collinsia parviflora, and Toxicoscordion paniculatum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2292. 20-May-2020


Full Size ImageFruit of Coll. No. 2292.1, Physaria X1
Full Size ImageColl. No. 2292.1, Physaria X1  
2292.1  Physaria hybrid.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Physaria X1.  Twinpod Hybrid.

South Valley Park, Jefferson County, Colorado. Between the Coyote Song Trail and the sandstone cliffs on the east side of the park, 4.66 km. west northwest of Chatfield Farms, Denver Botanic Garden. 39.5579N, 105.1407W. WGS 1984 Elev. 1835 m. Stiff sandstone-derived soil below cliffs, nearly bare of vegetation. Nearby: Quercus gambelii, Cryptantha virgata, Lappula occidentalis, Mertensia lanceolata, Collinsia parviflora, and Toxicoscordion paniculatum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2292.1 20-May-2020

 

Locations: Apex Park - Northern Parcel. Deadman Gulch.
Full Size ImagePanorama of today's objective.
Full Size ImageElk Trail through chokecherry on an old overgrown road.  

Tuesday, May 26, 2020

Apex Park, Restricted Area.
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Cliff on the south side of Deadman Gulch.
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My day pack and field press on the old road, now an elk trail.
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Upper part of Deadman Gulch
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View down Deadman Gulch.
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Green Mountain from Apex Open Space Park.
  2293  Linaria dalmatica.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Plantaginaceae

Linaria dalmatica (L.) Mill.  Dalmatian ToadFlax.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, north side of Deadman Gulch, right at the base of the Front Range scarp, 4.06 km. south of the GNIS location of Golden 39.7276N, 105.2228W. WGS 1984 Elev. 1893 m. Flowers yellow. Also seen or collected here: Juniperus scopulorum, Oenothera suffrutencens, Cynoglossum officinale, and Agoseris parviflora.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2293. 26-May-2020

  2294  Cynoglossum officinale.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Boraginaceae

Cynoglossum officinale L.  Gypsyflower.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, north side of Deadman Gulch, right at the base of the Front Range scarp, 4.06 km. south of the GNIS location of Golden. 39.7276N, 105.2228W. WGS 1984 Elev. 1897 m. Basal leaves withered. Flowers red, fading purple. Also seen or collected here: Juniperus scopulorum, Oenothera suffrutencens, Linaria dalmatica, and Agoseris parviflora. Colorado Noxious Weed List B.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2294. 26-Maay-2020

  2295  Agoseris, identified A. glauca in field but runcinate leaves lead to A. parviflora.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Agoseris parviflora (Nutt.) D. Dietr.  Steppe Goat-Chicory.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, north side of Deadman Gulch, right at the base of the Front Range scarp, 4.06 km. south of the GNIS location of Golden. 39.7276N, 105.2227W. WGS 1984 Elev. 1900 m. Leaves runcinate. Flowers yellow. Also seen or collected here: Juniperus scopulorum, Oenothera suffrutescens, Linaria dalmatica, and Cynoglossum officinale.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2295. 26-May-2020


Full Size ImageA Tradescantia occidentalis “Prairie Spiderwort” with intense color.  
2296  Tradescantia occidentalis.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Commelinaceae

Tradescantia occidentalis (Britton) Smyth.  Prairie Spiderwort.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, 4.08 km. south of the GNIS location of Golden 39.7274N, 105.2237W. WGS 1984 Elev. 1934 m. These flowers very intense purplish-blue color. Open southeast-facing slopes.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2296. 26-May-2020

  2296.1  Some tall mustard maybe Turritis glabra.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Turritis glabra L. [Arabis glabra (L.) Bernh.]  Tower Rockcress.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, 4.08 km. south of the GNIS location of Golden 39.7274N, 105.2237W. WGS 1984 Elev. 1934 m. Open southeast-facing slopes. Also collected here: Tradescantia occidentalis.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2296.1 26-May-2020

Coll. No. 2296.1, 26 May 2020, characters observed: Perennial herb, to 60 cm.; Stem, hairs simple proximally, glabrous distally; Leaves, basal, withered, but margin teeth and y-shaped hairs visible, cauline, sessile, auriculate, 35-40 mm. × 15 mm. wide, lanceolate, auriculate, glaucous, glabrous except mid-rib sparsely simple hairy, apex acute; Flowers, white, tips fading purple; Fruit, petiolate, 8 mm., 55 mm. × 1 mm., round;

  2297  Sisymbrium, maybe S. altissimum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Sisymbrium altissimum L.  Tall Tumblemustard.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, 4.08 km. south of the GNIS location of Golden 39.7275N, 105.2237W. WGS 1984 Elev. 1932 m. Open southeast-facing slopes. Also collected here: Tradescantia occidentalis and Turritis glabra.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2297. 26-May-2020

  2298  Erigeron divergens.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Erigeron tracyi Greene.  Running Fleabane.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, just north of a small spring, 4.03 km. south of the GNIS location of Golden 39.7278N, 105.2237W. WGS 1984 Elev. 1933 m. Heads solitary on (nearly) leafless stems. Also seen or collected nearby: Juniperus scopulorum, Eriogonum alatum, Turritis glabra, Physalis hederifolia, and Scorzonera laciniata. Thought to be an stable apomictic hybrid of E flagellaris and E. diverngens (FNANM) and is the most common of the three taxa in Golden and vicinity.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2298. 26-May-2020

  2299  Scorzonera laciniata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Scorzonera laciniata L.  Cutleaf Vipergrass.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, shaded spot between junipers, beside a small trickle of water from a spring, 4.03 km. south of the GNIS location of Golden 39.7278N, 105.2237W. WGS 1984 Elev. 1933 m. Also seen or collected nearby: Juniperus scopulorum, Eriogonum alatum, Turritis glabra, Physalis hederifolia, and Erigeron tracyi.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2299. 26-May-2020

  2300  Castilleja integra.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Orobanchaceae

Castilleja integra A. Gray.  Wholeleaf Indian Paintbrush.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, along the edge of an old road, now an elk trail, 4.02 km. south of the GNIS location of Golden 39.7279N, 105.2243W. WGS 1984 Elev. 1952 m. Large specimens with brilliant red color. Also collected nearby: Penstemon secundiflorus, Erigeron tracyi, Scorzonera laciniata, and Allium textile.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2300. 26-May-2020

  2300.1 

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rubiaceae

Galium aparine L.  Sticky Willy, Cleavers.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, along the edge of an old road, now an elk trail, 4.02 km. south of the GNIS location of Golden 39.7279N, 105.2243W. WGS 1984 Annuals. Also collected nearby: Penstemon secundiflorus, Castilleja integra, Erigeron tracyi, Scorzonera laciniata, and Allium textile.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2300.1 26-May-2020

  2300.2 

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Alyssum simplex Rudolphi.  European Madwort.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, along the edge of an old road, now an elk trail, 4.02 km. south of the GNIS location of Golden 39.7279N, 105.2243W. WGS 1984 Annuals. Also collected nearby: Penstemon secundiflorus, Castilleja integra, Erigeron tracyi, Scorzonera laciniata, and Allium textile.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2300.2 26-May-2020

  2301  Penstemon secundiflorus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Plantaginaceae

Penstemon secundiflorus Benth.  Sidebells Penstemon.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, along the edge of an old road, now an elk trail, 3.99 km. south of the GNIS location of Golden 39.7281N, 105.2247W. WGS 1984 Elev. 1964 m. Corolla pinkish when fresh, fading bluish. Also collected nearby: Alyssum simplex, Castilleja integra, Erigeron tracyi, Scorzonera laciniata, and Allium textile.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2301. 26-May-2020


Full Size ImageColl. No. 2302, Allium textile  
2302  Allium textile.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Alliaceae

Allium textile A. Nelson & J.F. Macbr.  Textile Onion.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, along the edge of an old road, now an elk trail, 3.99 km. south of the GNIS location of Golden 39.7282N, 105.2247W. WGS 1984 Elev. 1967 m. East-facing slope in deep forest duff under Cercocarpus montanus and Pinus ponderosa.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2302. 26-May-2020

  2303  Penstemon virens.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Plantaginaceae

Penstemon virens Pennell ex Rydb.  Front Range Beardtongue.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, north side of Deadman Gulch, on the nose of a small promontory overlooking the cliffs on the south side, 4.19 km. south southwest of the GNIS location of Golden. 39.7267N, 105.225W. WGS 1984 Elev. 2014 m. Dry, rocky site under scattered ponderosa pine; also here: Physaria montana and Campanula rotundifolia.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2303. 26-May-2020

  2304  Poa ?

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Poa fendleriana (Steud.) Vasey.  Muttongrass.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, north side of Deadman Gulch, on the nose of a small promontory overlooking the cliffs on the south side, 4.19 km. south southwest of the GNIS location of Golden. 39.7268N, 105.225W. WGS 1984 Elev. 2014 m. Dry, rocky site under scattered ponderosa pine; also here: Physaria montana, Campanula rotundifolia, and Penstemon virens.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2304. 26-May-2020

Coll. No 2304, 26 May 2020, characters observed: Annual, to 40 cm., clumped; Roots, fibrous; Leaves, sheath and clade differentiated, soft, in good part either basal or proximal; Sheath, 65 mm., mostly open; Ligule, membraneous, 4 mm., tip, acute; Auricles, absent; Blade, 65 mm., folded, margins scabrous, tip, prow-shaped; Inflorescence, 1 per culm, >>leaves, panicle, 45-60 mm × 7-10 mm. wide; Rachis, not extended, sparsely scabrous; Spikelets, many, some pistillate, some bisexual, 5 mm. × 1 mm. wide, similar, borne singly, pedicels, 0.5-4.5 mm.; Compression, slightly lateral; Disarticulation, between florets; Glumes, lower, 3 mm., veins, #3, upper, 4 mm., <lowest floret, veins, #5, keeled, membraneous, awns, absent; Florets, 3+ per spikelet; Axis, minutely hairy, not extended; Callus, unremarkable; Lemma, 4.6 mm., >glumes, keeled, proximally hairy, keel, scabrous, color, green to tan, veins, #5, margins, scarious; Palea, 4 mm., <lemma, membraneous, veins, green, scabrous, margins, glabrous, tip bifid.

  2305  Physaria montana.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Physaria montana (A. Gray) Greene.  Mountain Bladderpod.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, north side of Deadman Gulch, in a small saddle near the top of the initial Rocky Mountain Front Range scarp, 4.14 km. south southwest of the GNIS location of Golden 39.7272N, 105.2252W. WGS 1984 Elev. 2011 m. Among ponderosa pine and Rocky Mountain juniper; also collected here: Harbouria trachypleura and Erysimum capitatum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2305. 26-May-2020


Full Size ImageColl. No. 2306, Erysimum capitatum lateral pair of sepals saccate basally  
2306  Erysimum capitatum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Erysimum capitatum (Hook.) Greene.  Sanddune Wallflower.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, north side of Deadman Gulch, in a small saddle near the top of the initial Rocky Mountain Front Range scarp, 4.14 km. south southwest of the GNIS location of Golden 39.7271N, 105.2253W. WGS 1984 Elev. 2020 m. Under a Rocky Mountain juniper among ponderosa pines; also collected here: Harbouria trachypleura and Physaria montana.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2306. 26-May-2020

  2306.1  Harbouria trachypleura.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Apiaceae

Harbouria trachypleura (A. Gray) J.M. Coult. & Rose.  Whiskbroom Parsley.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost quadrant of the parcel, north side of Deadman Gulch, in a small saddle near the top of the initial Rocky Mountain Front Range scarp, 4.14 km. south southwest of the GNIS location of Golden 39.7271N, 105.2253W. WGS 1984 Elev. 2020 m. Small opening among Rocky Mountain junipers and ponderosa pines; also collected here: Erysimum capitatum and Physaria montana.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2306.1 26-May-2020

 

Literature Cited:
- Waage, Karl M., 1955.

Other articles:
• Dakota Ridge Trail:   near trailhead;   along ridge;   at viewpoint;   along ridge;  along trail.;   near jct.;   at Zorro Trl;   near jct.;   s. of trl jct;

Locations: Dinosaur Ridge. Matthews/Winters Park.  

Friday, 29 May 2020

Full Size Image
May favorite kind of trail straight up.
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Stegosaurus Lot, trailhead for Dinosaur Ridge.
Full Size Image
Interstate 70 enters Mount Vernon Canyon.
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Green Mountain from Dinosaur Ridge
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One of two Physaria seen.
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The other of two Physaria seen.
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Little rattlesnake seen along Dakota Ridge Trail.
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Two young women with unleashed dogs.
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Junction with the Zorro Trail.
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Looking north on the Dakota Ridge Trail.
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Looking south on the Dakota Ridge Trail.
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Opuntia macrorhiza
 

Literature Cited:
- Scott, G. R., 1972.

Other articles:
• Dakota Ridge Trail:   at Zorro Trl;

Locations: Dinosaur Ridge. Mount Vernon Canyon.  

Scott (1972) wrote about the wind gap in Dinosaur Ridge:
Qrf — Rocky Flats Alluvium. Inferred Rocky Flats alluvium erosion channel preserved in Mount Vernon Canyon and in the wind gap through Dakota hogback west of Green Mountain.

 

Other articles:
• Welch Ditch:   at concrete lid;   along trail;

Locations: Welch Ditch.
Full Size ImageA big patch of Myrtle Spurge beside the ditch.  

Wednesday, 3 June 2020

Welch Ditch
Full Size Image
Lots to see in this photo.
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Golden from the Welch Ditch.
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Physaria vitulifera on the edge of the ditch.
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What the heck is this? It looks like a poison ivy tree!
  2307  Cynoglossum officinale.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Boraginaceae

Cynoglossum officinale L.  Gypsyflower.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, in shade inside the ditch, south side of Clear Creek, just inside the mouth of Clear Creek Canyon, 2.73 km. west southwest of the GNIS location of Golden. 39.7515N, 105.2451W. WGS 1984 Elev. 1768 m. Also colleted here: Scrophularia lanceolata, Bromus tectorum, and Dactylis glomerata. Popular rock-climbing area with heavy daily use. Colorado Noxious Weed List B.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2307. 3-Jun-2020

  2308  Scrophularia lanceolata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Scrophulariaceae

Scrophularia lanceolata Pursh.  Lanceleaf Figwort.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, in shade inside the ditch, south side of Clear Creek, just inside the mouth of Clear Creek Canyon, 2.73 km. west southwest of the GNIS location of Golden. 39.7515N, 105.2451W. WGS 1984 Elev. 1774 m. Also colleted here: Cynoglossum officinale, Bromus tectorum, and Dactylis glomerata. Popular rock-climbing area with heavy daily use.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2308. 3-Jun-2020

  2309  Dactylis glomerata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Dactylis glomerata L.  Orchard Grass.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, at the base of aqueduct walls, south side of Clear Creek, just inside the mouth of Clear Creek Canyon, 2.69 km. west southwest of the GNIS location of Golden. 39.7517N, 105.2448W. WGS 1984 Elev. 1781 m. Also colleted here: Cynoglossum officinale, Scrophularia lanceolata, and Bromus tectorum. Not a listed Colorado noxious weed.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2309. 3-Jun-2020

  2310  Bromus, maybe B. tectorum, but not very hairy and wispy.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Bromus tectorum L.  Cheat Grass.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, in shade at the base of aqueduct walls, south side of Clear Creek, just inside the mouth of Clear Creek Canyon, 2.71 km. west southwest of the GNIS location of Golden. 39.7517N, 105.2449W. WGS 1984 Elev. 1781 m. Also colleted here: Cynoglossum officinale, Scrophularia lanceolata, and Dactylis glomerata. Popular rock-climbing area with heavy daily use. Colorado Noxious Weed List C.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2310. 3-Jun-2020

Other articles:
• Welch Ditch:   at Coll. No. 2311;  

2311  Jamesia americana.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Hydrangeaceae

Jamesia americana Torr. & A. Gray.  Fivepetal Cliffbush.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, south side of Clear Creek, growing in rocks above the ditch, barely reachable, more on slope above, just inside the mouth of Clear Creek Canyon, 2.59 km. west southwest of the GNIS location of Golden. 39.7522N, 105.244W. WGS 1984 Elev. 1780 m. Collected nearby: Aletes acaulis, Sedum lanceolatum, Eriogonum umbellatum, Acer glabrum, and Koeleria macrantha. Popular rock-climbing area with heavy daily use.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2311. 3-Jun-2020

  2312.1  Eriogonum umbellatum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Eriogonum umbellatum Torr. var. umbellatum.  Sulphur-Flower Buckwheat.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, south side of Clear Creek, growing in rocks on slope above the ditch, just inside the mouth of Clear Creek Canyon, 2.58 km. west southwest of the GNIS location of Golden. 39.7522N, 105.2438W. WGS 1984 Elev. 1788 m. Also collected here: Aletes acaulis, Comandra umbellata subsp. pallida, Physocarpus monogynus, and Sedum lanceolatum. Popular rock-climbing area with heavy daily use.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2312.1 3-Jun-2020

  2312.2  Physocarpus monogynus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Physocarpus monogynus (Torr.) J.M. Coult.  Mountain Ninebark.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, south side of Clear Creek, growing in rocks on slope above the ditch, just inside the mouth of Clear Creek Canyon, 2.58 km. west southwest of the GNIS location of Golden. 39.7522N, 105.2438W. WGS 1984 Elev. 1788 m. Also collected here: Aletes acaulis, Comandra umbellata subsp. pallida, Eriogonum umbellatum var. umbellatum, and Sedum lanceolatum. Popular rock-climbing area with heavy daily use.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2312.2 3-Jun-2020

  2312.3  Sedum lanceolatum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Crassulaceae

Sedum lanceolatum Torr.  Spearleaf Stonecrop.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, south side of Clear Creek, growing in rocks on slope above the ditch, just inside the mouth of Clear Creek Canyon, 2.58 km. west southwest of the GNIS location of Golden. 39.7522N, 105.2438W. WGS 1984 Elev. 1788 m. Also collected here: Aletes acaulis, Comandra umbellata subsp. pallida, Eriogonum umbellatum var. umbellatum, and Physocarpus monogynus. Popular rock-climbing area with heavy daily use.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2312.3 3-Jun-2020

  2312.4  Aletes acaulis.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Apiaceae

Aletes acaulis (Torr.) J.M. Coult. & Rose.  Stemless Indian Parsley.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, south side of Clear Creek, growing in rocks on slope above the ditch, just inside the mouth of Clear Creek Canyon, 2.58 km. west southwest of the GNIS location of Golden. 39.7522N, 105.2438W. WGS 1984 Elev. 1788 m. Also collected here: Sedum lanceolatum, Comandra umbellata subsp. pallida, Eriogonum umbellatum var. umbellatum, and Physocarpus monogynus. Popular rock-climbing area with heavy daily use.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2312.4 3-Jun-2020

  2312.5  Comandra umbellata pallida.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Santalaceae

Comandra umbellata (L.) Nutt. ssp. pallida (A. DC.) Piehl.  Pale Bastard Toadflax.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, south side of Clear Creek, growing in rocks on slope above the ditch, just inside the mouth of Clear Creek Canyon, 2.58 km. west southwest of the GNIS location of Golden. 39.7522N, 105.2438W. WGS 1984 Elev. 1788 m. Also collected here: Sedum lanceolatum, Aletes acaulis, Eriogonum umbellatum var. umbellatum, and Physocarpus monogynus. Popular rock-climbing area with heavy daily use.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2312.5 3-Jun-2020

  2313  Acer glabrum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Sapindaceae

Acer glabrum Torr.  Rocky Mountain Maple.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, south side of Clear Creek, growing in rocks on slope just below the ditch, just inside the mouth of Clear Creek Canyon, 2.55 km. west southwest of the GNIS location of Golden. 39.7523N, 105.2436W. WGS 1984 Elev. 1776 m. Also collected here and nearby: Jamesia americana, Physocarpus monogynus, and Koeleria macrantha. Popular rock-climbing area with heavy daily use.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2313. 3-Jun-2020

  2314  Koeleria macrantha.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Koeleria macrantha (Ledeb.) Schult.  Prairie Junegrass.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the former Welch Ditch, south side of Clear Creek, growing in rocks and concrete on the edge of the ditch, just inside the mouth of Clear Creek Canyon, 2.55 km. west southwest of the GNIS location of Golden. 39.7523N, 105.2436W. WGS 1984 Elev. 1775 m. Few plants here; clumped, not rhizomatous. Popular rock-climbing area with heavy daily use.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2314. 3-Jun-2020

Other articles:
• Welch Ditch:   at gulch;

Locations: Welch Ditch.
Full Size ImageWhere I found Cotoneaster lucida thanks to Cindy.  

2315  Cotoneaster lucidus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Cotoneaster lucidus Schltdl.  Hairy Stem Cotoneaster.

Welch Ditch, Jefferson County, Colorado. Along the former Welch Ditch, south side of Clear Creek, in a small gulch south of and above the ditch, just inside the mouth of Clear Creek Canyon, 2.37 km. west southwest of the GNIS location of Golden. 39.752N, 105.2419W. WGS 1984 Elev. 1779 m. Plants first recognized in the field by Cindy Trujillo.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2315. 3-Jun-2020

Full Size Image
Coll. No. 2315, Cotoneaster lucidus

Other articles:
• Welch Ditch:   at Coll 2316;

Locations: Welch Ditch.
Full Size ImageHesperis matronalis in the ditch.  

2316  Hesperis matronalis.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Hesperis matronalis L.  Dame's Rocket.

Clear Creek Canyon Park, Jefferson County, Colorado. Inside the former Welch Ditch, south side of Clear Creek, just inside the mouth of Clear Creek Canyon, 2.26 km. west southwest of the GNIS location of Golden. 39.7521N, 105.2409W. WGS 1984 Elev. 1777 m. Two plants, both collected. Colorado Noxious Weed List B.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2316. 3-Jun-2020

Full Size Image
What the well-dressed botanist wears while chasing noxious weeds in the grass.
  2317  Silene sp.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Caryophyllaceae

Silene latifolia Poir.  Bladder Campion.

Welch Ditch, Jefferson County, Colorado. Inside and beside the former Welch Ditch, south side of Clear Creek, just inside the mouth of Clear Creek Canyon, 2.19 km. west southwest of the GNIS location of Golden. 39.7519N, 105.2402W. WGS 1984 Elev. 1774 m. Flowers white, imperfect.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2317. 3-Jun-2020

Other articles:
• Welch Ditch:   at Holodiscus;  

2318  Holodiscus dumosus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Holodiscus dumosus (Nutt. ex Torr. & A.Gray) A.Heller.  Rock Spirea.

Clear Creek Canyon Park, Jefferson County, Colorado. Steep slopes above and below the former Welch Ditch, south side of Clear Creek, just inside the mouth of Clear Creek Canyon, 1.87 km. west southwest of the GNIS location of Golden. 39.7515N, 105.237W. WGS 1984 Elev. 1777 m. In bud, no flowers.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2318. 3-Jun-2020

 

Locations: North Washington Open Space.  

Saturday, June 6, 2020

North Washington Open Space.

Other articles:
• Golden Checklist Flora:  Evolvulus nuttallianus;  Evolvulus nuttallianus Roem. & Schult., additional data;
Full Size ImageFlower of Coll. No. 2319, Evolvulus nuttallianus
Full Size ImageColl. No. 2319, Evolvulus nuttallianus  

2319  Something in the Morning-Glory Family later, Evolvulus nuttallianus

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Convolvulaceae

Evolvulus nuttallianus Roem. & Schult.  Shaggy Dwarf Morning Glory.

North Washington Open Space, Jefferson County, Colorado. Top of hill, north side of social trail. 39.7686N, 105.2332W. WGS 1984 Elev. 1819 m. Two plants, twelve stems total; two stems collected. Flowers blue, fading darker.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich, with Margaret Henderson and Nancy von Burske 2319. 6-Jun-2020

 

Locations: Apex Park - Northern Parcel.
Full Size ImageView through Apex Park and Stonebridge to Green Mountain.
Full Size ImageObs. No. 1933, Asclepias viridiflora  

Wednesday, June 10, 2020

Apex Park, North Parcel.
Full Size Image
Unnamed gulch in Apex Park.
Full Size Image
Unnamed gulch in Apex Park.
  2340  Linum lewisii.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Linaceae

Linum lewisii Pursh.  Prairie Blue Flax.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost part of Apex Park, northeast corner, in grasslands on alluvial terrace just below foothill shrublands and the Rocky Mountain foothills scarp, 4.04 km. south of the GNIS location of Golden. 39.7277N, 105.2218W. WGS 1984 Elev. 1880 m. Homostylous. Also collected here: Ribes cereum, Prunus virginuana, Astragalus flexuosus, Lupinus argenteus, Bromus japonicus, and Nassella viridula.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2340. 10-Jun-2020

  2341  Lupinus sp., the usual suspect being L. argenteus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Fabaceae

Lupinus argenteus Pursh var. argenteus.  Loosely Flowered Silver Lupine.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost part of Apex Park, northeast corner, in grasslands on alluvial terrace just below foothill shrublands and the Rocky Mountain foothills scarp, 4.06 km. south of the GNIS location of Golden. 39.7275N, 105.222W. WGS 1984 Elev. 1884 m. Basal leaves absent, banner back glabrous, banner recurved 4 mm. from apex. Also collected here: Ribes cereum, Prunus virginuana, Astragalus flexuosus, Linum lewisii, Bromus japonicus, and Nassella viridula.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2341. 10-Jun-2020

Coll. No. 2341, 10 Jun 2020, characters observed: Perennial, 50-60 cm.; Stem, hairs appressed; Leaves, basal absent, cauline, alternate, palmately compound, leaflets, #8-9, glabrous adaxially; Inflorescence, raceme, neither crowded nor extended; Flowers, spur, bump <1 mm., petals generally white proximally to blue distally, not spotted, banner, 10 mm., recurved from a point 4 mm. from apex, back glabrous, wing, claw 1 mm. + blade 9 mm., keel, 10 mm., tip erect, margins glabrous, blue-plack distally; Style, barely exserted.

Fails in Ackerfield (2015) at couplet 5 because the point at which the banner is recurved is 4 mm. from the apex whereas couplet 5a requires that length to be 3 mm. or less.

Will not key to Lupinus argentea var. argentea in Jepson Manual of California because the banner back is glabrous.

  2342  Astragalus flexuosus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Fabaceae

Astragalus flexuosus G. Don.  Flexible Milkvetch.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost part of Apex Park, northeast corner, in grasslands on alluvial terrace just below foothill shrublands and the Rocky Mountain foothills scarp, 4.03 km. south of the GNIS location of Golden. 39.7277N, 105.2219W. WGS 1984 Elev. 1882 m. Leaves cauline. Also collected here: Ribes cereum, Prunus virginuana, Lupinus argenteus, Linum lewisii, Bromus japonicus, and Nassella viridula.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2342. 10-Jun-2020

  2343  Bromus japonicus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Bromus japonicus Thunb.  Japanese Cheat Grass.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost part of Apex Park, northeast corner, in grasslands on alluvial terrace just below foothill shrublands and the Rocky Mountain foothills scarp, 4.03 km. south of the GNIS location of Golden. 39.7276N, 105.2219W. WGS 1984 Elev. 188 m. With B. tectorum which it follows by 1 or 2 weeks. Also collected here: Ribes cereum, Prunus virginuana, Astragalus flexuosus, Lupinus argenteus, Linum lewisii, and Nassella viridula.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2343. 10-Jun-2020

  2344  Nassella viridula.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Nassella viridula (Trin.) Barkworth.  Green Needlegrass.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost part of Apex Park, northeast corner, in grasslands on alluvial terrace just below foothill shrublands and the Rocky Mountain foothills scarp, 4.07 km. south of the GNIS location of Golden. 39.7274N, 105.2217W. WGS 1984 Elev. 1882 m. Also collected here: Ribes cereum, Prunus virginuana, Astragalus flexuosus, Lupinus argenteus, Linum lewisii, and Bromus japonicus.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2344. 10-Jun-2020

  2345  Erigeron tracyi.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Erigeron tracyi Greene.  Running Fleabane.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost part of Apex Park, northeast corner, in grasslands on alluvial terrace just below foothill shrublands and the Rocky Mountain foothills scarp, 4.09 km. south of the GNIS location of Golden. 39.7273N, 105.2217W. WGS 198 Elev. 1882 m. Also collected nearby: Ribes cereum, Prunus virginuana, Astragalus flexuosus, Lupinus argenteus, Linum lewisii, Bromus japonicus, and Nassella viridula.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2345. 10-Jun-2020

  2346  Potentilla recta.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Potentilla recta L.  Sulphur Cinquefoil.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost part of Apex Park, northeast corner, at the base of the Rocky Mountain foothills scarp, 4.10 km. south of the GNIS location of Golden. 39.7272N, 105.2219W. WGS 1984 Elev. 1879 m. Mixed foothills shrub- and grassland. Also collected here: Erigeron tracyi, and Nassella viridula. Colorado Noxious Weed List B.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2346. 10-Jun-2020

  2347  Oenothera suffrutescens.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Onagraceae

Oenothera suffrutescens (Ser.) W. L. Wagner & Hoch.  Linda Tarde.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northernmost part of Apex Park, along the east boundary, near base of the Rocky Mountain foothills scarp, 4.23 km. south of the GNIS location of Golden 39.7263N, 105.2217W. WGS 1984 Elev. 1890 m. A little bedraggled from last week's record high temperature, but also slightly revived by yesterday's 0.29 in. of rain. Mostly foothills shrubland with grasses, also collected nearby: Arctium minus, Verbascum thapsus, Cynoglossum officinale, and Mondarda fistulosa.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2347. 10-Jun-2020

  2348  Delphinium carolinensis var. virescens.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Ranunculaceae

Delphinium carolinianum Walter ssp. virescens (Nutt.) R.E. Brooks.  Plains Larkspur.

Apex Park - Northern Parcel, Jefferson County, Colorado. Towards the middle of the Apex Park north parcel, lower portion of Rocky Mountains foothill scarp, on a small rocky promontory overlooking an unnamed gulch, 4.39 km. south of the GNIS location of Golden 39.7252N, 105.2217W. WGS 1984 Elev. 1916 m. Southeast facing rocky slope, with Rhus trilobata, Heterotheca villosa, Aristida purpurea, and Bromus tectorum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2348. 10-Jun-2020

Locations: Apex Park - Northern Parcel.
Full Size ImageColl. No. 2349, Monarda pectinata
Full Size ImageColl. No. 2349, Monarda pectinata  

2349  Monarda pectinata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Lamiaceae

Monarda pectinata Nutt.  Plains Beebalm.

Apex Park - Northern Parcel, Jefferson County, Colorado. Towards the middle of the Apex Park north parcel, lower portion of Rocky Mountains foothill scarp, on a small rocky promontory overlooking an unnamed gulch, 4.39 km. south of the GNIS location of Golden. 39.7252N, 105.2217W. WGS 1984 Elev. 1919 m. Flowers light pink, darker at lower lip. Southeast facing rocky slope, with Rhus trilobata, Heterotheca villosa, Aristida purpurea, and Bromus tectorum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2349. 10-Jun-2020

 

Locations: Cressmans Gulch (lower). Dakota Ridge.
Full Size ImageAbandoned drum set on Dakota Ridge.
Full Size ImageView south through Golden Valley.  

Friday, June 12, 2020

Cressman Gulch and Dakota Ridge
Full Size Image
Abandoned drum set on Dakota Ridge.
Full Size Image
Orobanche fasciculata growing in a small clump of Artemisia frigida

Literature Cited:
- Sencer, H. A., and J. G. Hawkes, 1980.

Other articles:
• Golden Checklist Flora:  Secale cereale;
Full Size ImageSpikelets of Coll. No. 2350, Secale cereale  

2350  Elymus canadensis. — Nope!

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Secale cereale L.  Cereal Rye.

Cressmans Gulch (lower), Jefferson County, Colorado. Northwesternmost Golden, between Pine Ridge Road and Dakota Ridge, on a terrace above Cressmans Gulch, 4.50 km. north northwest of the GNIS location of Golden. 39.7831N, 105.2396W. WGS 1984 Elev. 1870 m. Not rhizomatous, bi-lateral spike, two florets per spikelet, lemma asymetrical and keel ciliate. Also collected here: Poa secunda, Linum lewisii, and Lupinus argenteus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2350. 12-Jun-2020

Annual, erect, 75-100 cm., not rhizomatous; Roots, fibrous; Stem, herbaceous; Nodes, constricted, purple; Leaf, sheath, 115 mm., open, ligule, minimal, membraneous, auricle, 0.6-1.0 mm., blade, 170 mm. × 5 mm. wide, flat, minutely scabrous; Inflorescence, 1 per culm, terminal 2-sided spike, 100-110 mm. × 9 mm. wide; Rachis, nodes 2.0-3.5 mm., bilateral tufts of straight hairs; Spikelets, many, 1 per node, sessile, bases not embedded in rachis; Disarticulation, below the glumes; Glumes, 2, awl-like, 8-9 mm., ±equal, <lowest floret, keeled, purplish distally, appearing to hide the rachis but not the lemmas; Florets 2, appear side-to-side, fertile; Lemma, 12-13 mm., asymmetric in x-section, veins, 5, keeled, keel ciliate, margins, one ciliate, the other less so, awned; Awns, attached end, 11-16 mm., short proximally in the inflorescence, lengthening distally, straight to wavy, some slightly twisted; Palea, 11-12 mm, membraneous (Described from Coll. No. 1110 and 2350).

The rachis is quite brittle, suggesting this is one of the weedy ryes rather than an escaped cultivated rye (Sencer & Hawkes, 1980).

  2351  Poa secunda Poa pratensis.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Poa pratensis L.  Kentucky Bluegrass.

Cressmans Gulch (lower), Jefferson County, Colorado. Northwesternmost Golden, between Pine Ridge Road and Dakota Ridge, on a terrace above Cressmans Gulch, 4.50 km. north northwest of the GNIS location of Golden. 39.7832N, 105.2396W. WGS 1984 Elev. 1871 m. Slender rhizomes, lemma with cobwebby hairs. Also collected here: Secale cereale, Linum lewisii, and Lupinus argenteus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2351. 12-Jun-2020

  2351.1  Boraginaceae, past flowering.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Boraginaceae

Lithospermum cf. arvense L.  Corn Gromwell.

Cressmans Gulch (lower), Jefferson County, Colorado. Northwesternmost Golden, between Pine Ridge Road and Dakota Ridge, on a terrace above Cressmans Gulch, 4.50 km. north northwest of the GNIS location of Golden. 39.7832N, 105.2396W. WGS 1984 Elev. 1871 m. Fruit, no flowers. Definitely 4 nutlets, but without prickles, etc. Also collected here: Poa pratensis, Secale cereale, Linum lewisii, and Lupinus argenteus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2351.1 12-Jun-2020

  2352  Lupinus argenteus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Fabaceae

Lupinus argenteus Pursh var. argenteus.  Loosely Flowered Silver Lupine.

Cressmans Gulch (lower), Jefferson County, Colorado. Northwesternmost Golden, between Pine Ridge Road and Dakota Ridge, on a southwest-facing bank of Cressmans Gulch, 4.42 km. north northwest of the GNIS location of Golden. 39.7829N, 105.2394W. WGS 1984 Elev. 1867 m. Basal leaves absent. Banner back and keel glabrous. Also collected here: Poa pratensis, Secale cereale, Linum lewisii, and Lithospermum arvense.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2352. 12-Jun-2020

  2353  Linum lewisii.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Linaceae

Linum lewisii Pursh.  Prairie Blue Flax.

Dakota Ridge, Jefferson County, Colorado. Northwesternmost Golden, between Pine Ridge Road and Dakota Ridge, on the lower part of the west-facing limb of Dakota Ridge, 4.46 km. north northwest of the GNIS location of Golden. 39.783N, 105.2393W. WGS 1984 Elev. 1870 m. Homostylous. Also collected here: Poa pratensis, Secale cereale, Lupinus argenteus, and Lithospermum arvense.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2353. 12-Jun-2020

  2354  Helianthus pumilis.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Helianthus pumilus Nutt.  Little Sunflower.

Dakota Ridge, Jefferson County, Colorado. Hogback at the northern city limits of Golden, 3/4 of the way up the west-facing slope, at the lower edge of Cercocarpus montanus, 4.41 km. north northwest of the GNIS location of Golden. 39.7831N, 105.2381W. WGS 198 Elev. 1901 m. Also collected here: Bromus japonicus, and Nassella viridula, and nearby: Hypericum perforatum, Potentilla recta, and Muhlenbergia montana.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2354. 12-Jun-2020

  2355  Bromus japonicus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Bromus japonicus Thunb.  Japanese Cheat Grass.

Dakota Ridge, Jefferson County, Colorado. Hogback at the northern city limits of Golden, 3/4 of the way up the west-facing slope, at the lower edge of Cercocarpus montanus, 4.41 km. north northwest of the GNIS location of Golden. 39.7831N, 105.2381W. WGS 1984 Elev. 1903 m. Widely distributed on this slope, phenology following Bromus tectorum by about two weeks. Also collected here: Helianthus pumilis, and Nassella viridula, and nearby: Hypericum perforatum, Potentilla recta, and Muhlenbergia montana.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2355. 12-Jun-2020

  2356  Gaillardia aristata.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Gaillardia aristata Pursh.  Blanketflower.

Dakota Ridge, Jefferson County, Colorado. Hogback at the northern city limits of Golden, nearly to the top of the west slopes. 4.40 km. north northwest of the GNIS location of Golden. 39.7831N, 105.2378W. WGS 1984 Elev. 1916 m. Foothills shrubland, mostly Cercocarpus montanus; also collected here: Hypericum perforatum; nearby: Campanula rotundifolia, and Muhlenbergia montana.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2356. 12-Jun-2020

  2356.1  Hypericum perforatum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Hypericaceae

Hypericum perforatum L.  Common St. John's Wort.

Dakota Ridge, Jefferson County, Colorado. Hogback at the northern city limits of Golden, nearly to the top of the west slopes. 4.40 km. north northwest of the GNIS location of Golden. 39.783N, 105.2378W. WGS 1984 Elev. 1916 m. Foothills shrubland, mostly Cercocarpus montanus; also collected here: Gaillardia aristata; nearby: Campanula rotundifolia, and Muhlenbergia montana.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2356.1 12-Jun-2020

  2357  Eriogonum umbellatum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Polygonaceae

Eriogonum umbellatum Torr. var. umbellatum.  Sulphur-Flower Buckwheat.

Dakota Ridge, Jefferson County, Colorado. Hogback at the northern city limits of Golden, more or less flat area on top of ridge, 4.38 km. north northwest of the GNIS location of Golden. 39.783N, 105.2376W. WGS 1984 Elev. 1926 m. Open herbaceous vegetation, ponderosa pines and mountan mahogany shrubland nearby. Also collected here: Heterotheca villosa, Hesperostipa comata, and Koeleria macrantha.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2357. 12-Jun-2020

  2357.1  Koeleria macrantha.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Koeleria macrantha (Ledeb.) Schult.  Prairie Junegrass.

Dakota Ridge, Jefferson County, Colorado. Hogback at the northern city limits of Golden, dry and more or less flat area on top of ridge, 4.38 km. north northwest of the GNIS location of Golden. 39.783N, 105.2376W. WGS 1984 Elev. 1927 m. Open herbaceous vegetation, ponderosa pines and mountain mahogany shrubland nearby. Also collected here: Heterotheca villosa, Hesperostipa comata, and Eriogonum umbellatum var. umbellatum.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2357.1 12-Jun-2020

  2358  Heterotheca villosa.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Heterotheca villosa (Pursh) Shinners.  Hairy False Goldenaster.

Dakota Ridge, Jefferson County, Colorado. Hogback at the northern city limits of Golden, dry and more or less flat area on top of ridge, 4.38 km. north northwest of the GNIS location of Golden. 39.783N, 105.2376W. WGS 1984 Elev. 1930 m. Open herbaceous vegetation, ponderosa pines and mountain mahogany shrubland nearby. Also collected here: Koeleria macrantha, Hesperostipa comata, and Eriogonum umbellatum var. umbellatum.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2358. 12-Jun-2020

Other articles:
• Golden Checklist Flora:  Delphinium carolinianum;  Delphinium carolinianum, additional information;
Full Size ImageColl. No. 2359, Delphinium carolinianum subsp. virescens  

2359  Delphinium carolinum virescens.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Ranunculaceae

Delphinium carolinianum Walter ssp. virescens (Nutt.) R.E. Brooks.  Plains Larkspur.

Dakota Ridge, Jefferson County, Colorado. Hogback at the northern city limits of Golden, 3/4 of the way up the west-facing slope, 4.37 km. north northwest of the GNIS location of Golden. 39.7828N, 105.2379W. WGS 1984 Elev. 1912 m. Within a band of foothills mountain mahogany shrubland likely aligned with underlying strata; collected nearby: Potentilla recta and Muhlenbergia montana.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2359. 12-Jun-2020

  2360  Melilotus officinalis.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Fabaceae

Melilotus officinalis (L.) Lam.  Yellow Sweet Clover.

Cressmans Gulch (lower), Jefferson County, Colorado. Northwesternmost Golden, between Pine Ridge Road and Dakota Ridge, on a southwest-facing bank of Cressmans Gulch, 4.42 km. north northwest of the GNIS location of Golden. 39.7827N, 105.2393W. WGS 1984 Elev. 1872 m. Grassy bank of gulch, also seen or collected here: Rumex acetosella, Linum lewisii, Lupinus argenteus, and Thelesperma megapotamicum.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2360. 12-Jun-2020

 
Full Size ImageSomething is parasitizing my Artemisia  

Saturday, 13 June 2020

Noticed that something is parasitizing my Artemisia ludoviciana

 

Other articles:
• Eagle Ridge Drive:   bet. Shelton and Rabbit Run;
• Golden Checklist Flora:   Rhus trilobata;

Locations: Colorado School of Mines Survey Field.
Full Size ImageRhus trilobata at the southern end of the Survey Field.  

Saturday, 20 June 2020

Colorado School of Mines Survey Field.
Full Size Image
Trail to Survey Field from Eagle Ridge Drive.
Full Size Image
Developing fruit on Ribes cereum.
Full Size Image
Amateur trailwork in the survey field.
Full Size Image
Astragalus crassicarpus seen in the Survey Field.

Full Size ImageColl. No. 2361, Lupinus argenteus var. argenteusand Coll. No. 2362, Bromus secalinus  
2361  Lupinus argenteus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Fabaceae

Lupinus argenteus Pursh var. argenteus.  Loosely Flowered Silver Lupine.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southernmost edge of the Survey Field, adjacent to Stonebridge HOA lands, high plains at the base of the Rocky Mountain Front Range, 3.27 km. south of the GNIS location of Golden. 39.733N, 105.2215W. WGS 1984 Elev. 1827 m. Basal leaves 0, flowers blue to lavender. Mixed foothills shrubs and grasses, also seen or collected here: Toxicodendron rydbergii, Symphoricarpos rotundifolius, Senecio integerrimus, and Bromus japonicus.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2361. 20-Jun-2020


Full Size ImageColl. No. 2361, Lupinus argenteus var. argenteusand Coll. No. 2362, Bromus secalinus
Full Size ImageColl. No. 2362, Bromus secalinus  
2362  Bromus japonicus — Seemed like a really large Bromus japonicus

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Bromus secalinus L.  Chess.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southernmost edge of the Survey Field, adjacent to Stonebridge HOA lands, high plains at the base of the Rocky Mountain Front Range, 3.27 km. south of the GNIS location of Golden. 39.7329N, 105.2215W. WGS 1984 Elev. 1824 m. Larger than Bromus japonicus, growing around a pile of rocks. Mixed foothills shrubs and grasses, also seen or collected here: Toxicodendron rydbergii, Symphoricarpos rotundifolius, Senecio integerrimus, and Lupinus argenteus.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2362. 20-Jun-2020

  2362.1  Bromus japonicus, smut infested.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Bromus secalinus L.  Chess.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southernmost edge of the Survey Field, adjacent to Stonebridge HOA lands, high plains at the base of the Rocky Mountain Front Range, 3.27 km. south of the GNIS location of Golden. 39.7329N, 105.2215W. WGS 1984 Elev. 1824 m. Same as Coll. No. 2362, except smut infested. Mixed foothills shrubs and grasses, also seen or collected here: Toxicodendron rydbergii, Symphoricarpos rotundifolius, Senecio integerrimus, and Lupinus argenteus.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2362.1 20-Jun-2020

  2363  Symphoricarpos rotundifolia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Caprifoliaceae

Symphoricarpos rotundifolius A. Gray.  Roundleaf Snowberry.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southernmost edge of the Survey Field, adjacent to Stonebridge HOA lands, high plains at the base of the Rocky Mountain Front Range, 3.26 km. south of the GNIS location of Golden. 39.733N, 105.2213W. WGS 1984 Elev. 1826 m. Around the edges of a larger group of Rhus trilobata. Mixed foothills shrubs and grasses, also seen or collected here: Toxicodendron rydbergii, Bromus secalinus, Senecio integerrimus, and Lupinus argenteus.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2363. 20-Jun-2020

  2364  Rosa acicularis var. sayi.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Rosaceae

Rosa acicularis Lindl. ssp. sayi (Schwein.) W. H. Lewis.  Say's Acicular Rose.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southernmost edge of the Survey Field, adjacent to Stonebridge HOA lands, high plains at the base of the Rocky Mountain Front Range, 3.27 km. south of the GNIS location of Golden. 39.733N, 105.2215W. WGS 1984 Elev. 1828 m. Mixed foothills shrubs and grasses, also seen or collected here: Toxicodendron rydbergii, Bromus secalinus, Senecio integerrimus, and Lupinus argenteus.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2364. 20-Jun-2020

  2365  Castilleja integra.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Orobanchaceae

Castilleja integra A. Gray.  Wholeleaf Indian Paintbrush.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.23 km. south of the GNIS location of Golden 39.7332N, 105.2219W. WGS 198 Elev. 1833 m. A rather large, robust clump. Nearby shrubs or forbs are Rhus trilobata, Lupinus argentea, and Rosa acicularis var. sayi. Nearest Artemisia, in this case A. ludoviciana, is quite small and some distance away.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2365. 20-Jun-2020


Full Size ImageColl. No. 2365.1, Lithospermum sp., likely L. incisum
Full Size ImageNutlets of Coll. No. 2365.1, Lithospermum sp., likely L. incisum
Full Size ImageColl. No. 2365.1, Lithospermum sp., likely L. incisum  
2365.1  Unknown Boraginaceae, in fruit. Later determined to be likely Lithospermum incisum.
  2366  Geranium caespitosum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Geraniaceae

Geranium caespitosum James.  Pineywoods Geranium.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.23 km. south of the GNIS location of Golden 39.7333N, 105.2218W. WGS 1984 Elev. 1832 m. Basal leaves withering. Nearby shrubs or forbs are Rhus trilobata, Lupinus argentea, and Rosa acicularis var. sayi. Also collected here: Castilleja integra and Lithospermum incisum.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2366. 20-Jun-2020

  2367  Helianthus pumilis.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Helianthus pumilus Nutt.  Little Sunflower.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.18 km. south of the GNIS location of Golden 39.7336N, 105.2227W. WGS 1984 Elev. 1841 m. Foothills grassland below shrubland; also here: Astragalus crassicarpus, Heterotheca villosa, and Hymenopappus filifolius.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2367. 20-Jun-2020

  2368  Heterotheca villosa
  2369  Hymenopappus filifolius var. polycephalous.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Hymenopappus filifolius Hook. var. polycephalus (Osterh.) B.L. Turner.  Many-Headed Fine-Leaved Wooly-White.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.16 km. south of the GNIS location of Golden 39.7338N, 105.2228W. WGS 198 Elev. 1844 m. East-facing slope with low forbs and grasses in foothills grassland below shrubland; also collected here: Astragalus crassicarpus, Helianthus pumilus, and Heterotheca villosa.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2369. 20-Jun-2020

  2370  Cirsium undulatum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Cirsium undulatum (Nutt.) Spreng.  Wavy Leaved Thistle.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.15 km. south of the GNIS location of Golden. 39.7339N, 105.2232W. WGS 1984 Elev. 1850 m. Northeast-facing gentle slope in foothills grassland, also collected or seen nearby: Opuntia macrorhiza, Hymenopappus filifolius, Aegilops cylindrica, and Poa bulbosa. The common native thistle in Jefferson County, Colorado.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2370. 20-Jun-2020


Full Size ImageColl. No. 2371, Opuntia macrorhiza  
2371  Opuntia sp., maybe O. macrorhiza.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Cactaceae

Opuntia macrorhiza Engelm.  Western Pricklypear.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.14 km. south of the GNIS location of Golden. 39.7339N, 105.2234W. WGS 1984 Elev. 1846 m. Northeast-facing gentle slope in foothills grassland, also collected or seen nearby: Cirsium undulatum, Hymenopappus filifolius, Aegilops cylindrica, and Poa bulbosa. Coordinates estimated from those of a nearby collection.

Collected by permit: Colorado School of Mines, 2020, issued: Apr 1, 2020, to: Tom Schweich.

Tom Schweich 2371. 20-Jun-2020

 

Other articles:
• Plainview Road:   near Coal Ck;

Locations: Ranson/Edwards Homestead Open Space Park.
Full Size ImageRhus trilobata at Ranson/Edwards.  

Tuesday, 23 June 2020

Ranson/Edwards Homestead Open Space
Full Size Image
Location of interpretive plaque for the Second Plainview School.
Full Size Image
Interpretive plaque for the Second Plainview School.
  2372  Eremogene fendleri.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Caryophyllaceae

Eremogone fendleri (A. Gray) Ikonnikov.  Fendler's Sandwort.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.6 mi. generally north on Plainview Road, then 90 m. east along a terrace on the south side of an ephemeral stream, 19.8 km. north northwest of the GNIS location of Golden. 39.8894N, 105.2609W. WGS 1984 Elev. 1940 m. This site a little more dry and rocky than the surrounding area; also collected here or nearby: Tragopogon dubius, Penstemon secundiflorus and P. virens, Carex inops var. heliophila, and Koeleria macrantha.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2372. 23-Jun-2020

Literature Cited:
- Kittel, Gwen, 2016.
Full Size ImageColl. No. 2373, Salix lasiandra var. caudata  

2373  Salix sp.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Salicaceae

Salix lasiandra Benth. var. caudata (Nutt.) Sudw.  Greenleaf Willow.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.6 mi. generally north on Plainview Road, then 325 m. east along a terrace on the south side of an ephemeral stream, 19.9 km. north northwest of the GNIS location of Golden. 39.8896N, 105.2588W. WGS 1984 Elev. 1932 m. Beside ephemeral stream; in fruit. Also collected here or nearby: Galium boreale, Crataegus succulenta, Rosa arkansana, Toxicodendron rydbergii, and Gaillardia aristata.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2373. 23-Jun-2020

  2374  Galium boreale.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rubiaceae

Galium boreale S. Watson.  Bedstraw.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.6 mi. generally north on Plainview Road, then 325 m. east along a terrace on the south side of an ephemeral stream, 19.9 km. north northwest of the GNIS location of Golden. 39.8896N, 105.2588W. WGS 1984 Elev. 1933 m. Along the south bank of ephemeral stream from this location extending generally east and downstream.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2374. 23-Jun-2020

  2375  Plantago lanceolata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Plantaginaceae

Plantago lanceolata L.  Narrowleaf Plantain.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.6 mi. generally north on Plainview Road, then 325 m. east along a terrace on the south side of an ephemeral stream, 19.9 km. north northwest of the GNIS location of Golden. 39.8897N, 105.2575W. WGS 1984 Elev. 1927 m. Beside ephemeral stream.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2375. 23-Jun-2020


Full Size ImageHabitat of Coll. No. 2376, Lithospermum multiflorum
Full Size ImageColl. No. 2376, Lithospermum multiflorum  
2376  Lithospermum multiflorum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Boraginaceae

Lithospermum multiflorum Torrey ex A. Gray.  Many Flowered Stoneseed.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. generally north on Plainview Road, then 500 m. east along a terrace on the north side of an ephemeral stream, 19.9 km. north northwest of the GNIS location of Golden. 39.8903N, 105.2573W. WGS 1984 Elev. 1931 m. Adjacent to a colony of Canada thistle.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2376. 23-Jun-2020

Other articles:
• Golden Checklist Flora:  Cirsium undulatum;
Full Size ImageColl. No. 2377, Cirsium undulatum with bumblebee.
Full Size ImageBig bumblebee on Cirsium undulatum  

2377  Cirsium undulatum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Cirsium undulatum (Nutt.) Spreng.  Wavy Leaved Thistle.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. generally north on Plainview Road, then 450 m. east along the north side of an ephemeral stream, 19.9 km. north northwest of the GNIS location of Golden. 39.8905N, 105.2579W. WGS 1984 Elev. 1932 m. Scattered on a terrace above ephemeral stream.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2377. 23-Jun-2020

Full Size Image
Coll. No. 2377, Cirsium undulatum in progress.
  2378  Apocynum, maybe the hybrid A. ×floribundum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Apocynaceae

Apocynum floribundum Greene.  Dogbane.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.3 mi. generally north on Plainview Road, then 50 m. northeast on an old ranch road, 20.0 km. north northwest of the GNIS location of Golden. 39.8904N, 105.2616W. WGS 1984 Elev. 1949 m. Flowers light pink with darker pink stripes inside.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2378. 23-Jun-2020


Full Size ImageAsclepias stenophylla collected at Ranson/Edwards Homestead Open Space.  
Asclepias stenophylla.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asclepiadaceae

Asclepias stenophylla A. Gray.  Narrow-leaved Milkweed.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, southwestern corner of the park, west of Plainview Road, along the southern fence line, and continuing to the north to an ephemeral steam. 39.8843N, 105.2663W. WGS 1984 Foothills grassland.

Irene Weber, with Anthony Massaro and Tanner Marshall 8-Jul-2020

Foothills grassland; also seen or collected here: Polygonum douglasii, Lithospermum multiflorum, Helianthus pauciflorus subsp. subrhomboideus, H. pumilis, Elymus elymoides, and Hesperostipa spartea.

 

Locations: Ranson/Edwards Homestead Open Space Park.  

Sunday, 12 July 2020

Ranson/Edwards

 

Full Size ImageColl. No. 2379, Asclepias stenophylla
Full Size ImageColl. No. 2379, Asclepias stenophylla
Full Size ImageAnother habitat shot of Coll. No. 2379, Asclepias stenophylla  
2379  Asclepias stenophylla
Full Size Image
Coll. No. 2739, Asclepias stenophylla

Other articles:
• Golden Checklist Flora:  Epilobium hirsutum;
Full Size ImageColl. No. 2380, Epilobium hirsutum  

2380  Epilobium hirsutum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Onagraceae

Epilobium hirsutum L.  Hairy Willowherb.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. generally north on Plainview Road, then 300 m. west to a small wetland just above a reservoir, 19.4 km. north northwest of the GNIS location of Golden. 39.8865N, 105.2647W. WGS 1984 Elev. 1963 m. Loose gravelly soil, seasonally inundated. Colorado Noxious Weed List A.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2380. 12-Jul-2020

 

Locations: Apex Park - Northern Parcel.  

Friday, 17 July 2020

Apex Open Space Park
  2381  Mirabilis linearis.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Nyctaginaceae

Mirabilis linearis (Pursh) Heimerl.  Narrowleaf Four O'Clock.

Apex Park - Northern Parcel, Jefferson County, Colorado. About half way up the initial Rocky Mountain Front Range scarp, near the south edge of the restricted area, 5.1 km. south of the GNIS location of Golden. 39.7203N, 105.2211W. WGS 1984 Elev. 1997 m. On the edge of trail, usually single plants, widely dispersed, many inflorescences have been eaten.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2381. 17-Jul-2020

  2382  Juniperus scopulorum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Cupressaceae

Juniperus scopulorum Sarg.  Rocky Mountain Juniper.

Apex Park - Northern Parcel, Jefferson County, Colorado. About half way up the initial Rocky Mountain Front Range scarp, near the south edge of the restricted area, 5.03 km. south of the GNIS location of Golden. 39.7208N, 105.222W. WGS 1984 Elev. 2015 m. Large specimen, steep northeast-facing slope. Mostly foothills shrubland with a few junipers, also collected nearby: Mirabilis linearis, Ranunculus glaberrimus, Grindelia squarrosa, and Andropogon gerardii.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2382. 17-Jul-2020

  2383  Polygonum douglasii.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Polygonum douglasii Greene.  Douglas Knotweed.

Apex Park - Northern Parcel, Jefferson County, Colorado. About half way up the initial Rocky Mountain Front Range scarp, near the south edge of the restricted area, 5.03 km. south of the GNIS location of Golden. 39.7208N, 105.2226W. WGS 1984 Elev. 2024 m. In the watercourse at the base of a now dry cascade. Mixed foothills shrubland with a few Rocky Mountain junipers. Also collected here: Grindelia squarrosa.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2383. 17-Jul-2020

  2384  Grindelia squarrosa.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Grindelia squarrosa (Pursh) Dunal.  Curlycup Gumweed.

Apex Park - Northern Parcel, Jefferson County, Colorado. About half way up the initial Rocky Mountain Front Range scarp, near the south edge of the restricted area, 5.03 km. south of the GNIS location of Golden. 39.7208N, 105.2226W. WGS 1984 Elev. 2026 m. In a watercourse on the lip of a now dry cascade and in the surrounding area. Mixed foothills shrubland with a few Rocky Mountain junipers. Also collected here: Polygonum douglasii.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2384. 17-Jul-2020

  2385  Andropogon gerardii.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Andropogon gerardii Vitman.  Big Bluestem.

Apex Park - Northern Parcel, Jefferson County, Colorado. Near the top of the initial Rocky Mountain Front Range scarp, near the south edge of the restricted area, 4.96 km. south of the GNIS location of Golden. 39.7214N, 105.2226W. WGS 1984 Elev. 2029 m. In rocks on nose of east-facing ridge.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2385. 17-Jul-2020

  2386  Artemisia dracunculus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Artemisia dracunculus L.  Tarragon, Dragon Wort.

Apex Park - Northern Parcel, Jefferson County, Colorado. Near the top of the initial Rocky Mountain Front Range scarp, southern half of the restricted area, 4.93 km. south of the GNIS location of Golden. 39.7216N, 105.2232W. WGS 1984 Elev. 2047 m. An early flowering plant, ahead of others nearby. Mixed foothills shrubland, with a few Rocky Mountain junipers, ponderosa pines are a little higher, also collected here: Collinsia parviflora and Andropogon gerardii.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2386. 17-Jul-2020

  2387  Ceanothus fendleri.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rhamnaceae

Ceanothus fendleri A. Gray.  Fendler's Ceanothus.

Apex Park - Northern Parcel, Jefferson County, Colorado. Near the top of the initial Rocky Mountain Front Range scarp, southern half of the restricted area, 4.89 km. south of the GNIS location of Golden 39.7219N, 105.2248W. WGS 1984 Elev. 2088 m. In fruit only. Mixed foothills shrubland, with a few Rocky Mountain junipers, ponderosa pines are a little higher, also collected nearby: Anaphalis margaritacea and Eriogonum umbellatum var. ramulosum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2387. 17-Jul-2020

  2388  Anaphalis sp. ?

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Anaphalis margaritacea (L.) Bentham & Hooker.  Western Pearly Everlasting.

Apex Park - Northern Parcel, Jefferson County, Colorado. Near top of initial Rocky Mountain Front Range scarp, on a ridge overlooking an unnamed gulch to the north, about center of Apex Park - North, 4.84 km. south of the GNIS location of Golden 39.7222N, 105.2251W. WGS 1984 Elev. 2082 m. Numerous plants seen, but long past their prime. Mixed foothills shrubland, just below the ponderosa pines, also collected nearby: Claytonia rosea, Ceanothus fendleri, and Eriogonum umbellatum var ramulosum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2388. 17-Jul-2020


Full Size ImageColl. No. 2389, Eriogonum umbellatum var. ramulosum
Full Size ImageInflorescence of Coll. No. 2389, Eriogonum umbellatum var. ramulosum  
2389  Eriogonum umbellatum var. ramulosum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Eriogonum umbellatum Torr. var. ramulosum Reveal.  Buffalo Bill's Sulphur Flower.

Apex Park - Northern Parcel, Jefferson County, Colorado. Nearing the top of the initial Rocky Mountain Front Range scarp, approximate center of north parcel, 2.06 km. southeast of Buffalo Bill's grave, and 4.82 km. south of the GNIS location of Golden. 39.7224N, 105.2255W. WGS 1984 Elev. 2082 m. Seven of eight inflorescences collected have the extra whorl of bracts below the inflorescence branches. North-facing slope, mixed foothills shrubland at edge of ponderosa pine woodland, also collected here: Claytonia rosea, Ceanothus fendleri, and Anaphalis margaritacea.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2389. 17-Jul-2020

Other articles:
• Golden Checklist Flora:  Eriogonum alatum;
Full Size ImageVoucher of Coll. No. 2390, Eriogonum alatum  

2390  Eriogonum alatum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Eriogonum alatum Torr.  Winged Buckwheat.

Apex Park, Jefferson County, Colorado. East-central Apex Park, about mid-way up the initial Rocky Mountain Front Range scarp, along what may have been a road but is now a social trail, 5.19 km. south of the GNIS location of Golden. 39.7197N, 105.2202W. WGS 1984 Elev. 1977 m. Southeast facing slope, numerous flowering and non-flowering rosettes above and below trail.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2390. 17-Jul-2020

Other articles:
• Golden Checklist Flora:  Quercus gambelii;
Full Size ImageColl. No. 2391, Quercus gambelii  

2391  Quercus gambelii.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Fagaceae

Quercus gambelii Nutt.  Gambel's oak.

Apex Park, Jefferson County, Colorado. East-central Apex Park, part-way up the initial Rocky Mountain Front Range scarp, along a social trail in a small canyon, 5.21 km. south of the GNIS location of Golden. 39.7195N, 105.2196W. WGS 1984 Elev. 1956 m.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2391. 17-Jul-2020

 

Locations: Clear Creek. Deadman Gulch. Eagle Ridge. Kinney Run. North Washington Open Space.
Full Size ImageView north through Golden Valley from Eagle Ridge.
Full Size ImageDeadman Gulch from Eagle Ridge.  

Friday, 24 July 2020

Full Size Image
Kinney Run from Eagle Ridge.
Full Size Image
Survey Field from Eagle Ridge.
Full Size Image
Susan and Zack on Eagle Ridge.
Full Size Image
Ericameria nauseosa var. nauseosa on Eagle Ridge
Full Size Image
Tom on Eagle Ridge
 

Other articles:
• Golden Checklist Flora:  Muhlenbergia andina;  Muhlenbergia andina, additional information;
Full Size ImageColl. No. 2392, Muhlenbergia andina.
Full Size ImageRhizome of Coll. No. 2392, Muhlenbergia andina.  

2392  Muhlenbergia sp.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Muhlenbergia andina (Nutt.) Hitchc.  Foxtail Muhly.

Clear Creek, Jefferson County, Colorado. Near the north bank of Clear Creek, on the edge of a now dry distributary channel, approximately 100 m. west of US Highway 6, 1.75 km. west of the GNIS location of Golden 39.7528N, 105.2365W. WGS 1984 Elev. 1731 m. Also seen here: Dichanthelium sp., probably D. oligosanthes.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich, with Jessica Smith, Susan Panjabi, and Zachariah Wilson 2392. 24-JuL-2020

Coll. No. 2392, 24 Jul 2020, characters observed: Perennial grass, to 70 cm.; Rhizomes, robust, scaly; Internodes glabrous, except retrorsely hairy just below nodes to lowest part of sheath above; Leaves, sheath, open, 60 mm., ligules, 1 mm., membraneous, auricles, absent, blade, 100 mm. × 2.3 mm. wide, tapered to an acute tip, margin and mid-rib slightly scabrous; Inflorescence, 1 per culm, dense interrupted panicle, “appearing furry” per Wingate (1994); Spikelets, with 1 well developed floret; Glumes, lower, 3.5 mm., upper, 3.2 mm., veins, #1, but otherwise glumes very thin; Callus, silky hairs to 2 mm.; Lemma, 2.5 mm., very thin, except 3 green veins, awn, #1, from entire apex, 7.5 mm, straight to wavy; Palea, 1.7 mm.

Full Size Image
Detail of inflorescence of Coll. No. 2392, Muhlenbergia andina.

 

Locations: Dakota Ridge.
Full Size ImageRock Wren and family at Dakota Ridge.
Full Size ImageEast side of Dakota Ridge.  

Wednesday, 29 July 2020

I was down on my hands and knees collecting Physalis longifolia at Dakota Ridge, north Golden, Jefferson County, Colorado, when I heard a soft rattlesnake sound. Took me a while but I finally noticed it was coming from this little gray bird that was hopping back and forth between the rocks in the foreground. The "clacking" or "chattering" noise was clearly coming from its bill. There are three more similar birds on the brown rock above and to the right of the bird that was out front. I would assume that the four birds were a family group, and the bird making the clacking noise was intending to distract me. Forced to actually look in a bird book, this bird looks similar to but a little smaller than a Townsends Solitaire and a little bigger than a Gray Vireo. Neither of them are known to make a clacking noise or "imitate" a rattlesnake, at least according to my book (Peterson, 1961).

Posted this to Facebook asking my bird-knowledgeable friends for help. They agreed that the location and the soft rattling/trilling, or rattling chatter strongly suggested the birds were Rock Wrens.

Also got stabbed by an assassin bug. It hurt on a scale of 7 of 10 for about 10 minutes, then went away.

  2395  Dipsacus laciniatus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Dipsacaceae

Dipsacus laciniatus L.  Cutleaf Teasel.

Dakota Ridge, Jefferson County, Colorado. Northwestern-most Golden, in the pit of a former clay mine, accessed by way of the City of Golden Cressman Gulch Trail and then a social/game trail, 4.19 km. north northeast of the GNIS location of Golden. 39.7821N, 105.2361W. WGS 1984 Elev. 1855 m. Also collected here: Chenopodium album and Physalis longifolia. D. laciniatus more common in Golden than D. fullonum, both of which are Colorado Noxious Weed List B weeds.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2395. 29-Jul-2020

  2396  Physalis sp., P. longifolia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Solanaceae

Physalis longifolia Nutt.  Longleaf Groundcherry.

Dakota Ridge, Jefferson County, Colorado. Northwestern-most Golden, in the pit of a former clay mine, accessed by way of the City of Golden Cressman Gulch Trail and then a social/game trail, 4.28 km. north northeast of the GNIS location of Golden. 39.7828N, 105.236W. WGS 1984 Elev. 1857 m. Top of a waste pile. Also collected here: Chenopodium album and Dipsacus laciniatus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2396. 29-Jul-2020

  2396.1  Chenopodium, probably C. album.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Chenopodiaceae

Chenopodium album L.  Lambsquarters.

Dakota Ridge, Jefferson County, Colorado. Northwestern-most Golden, in the pit of a former clay mine, accessed by way of the City of Golden Cressman Gulch Trail and then a social/game trail, 4.28 km. north northeast of the GNIS location of Golden. 39.7828N, 105.236W. WGS 1984 Elev. 1857 m. Top of a waste pile. Also collected here or nearby: Dipsacus laciniatus and Physalis longifolia.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2396.1 29-Jul-2020

Other articles:
• Golden Checklist Flora:  Calamovilfa longifolia;
Full Size ImageColl. No. 2397, Calamovilfa longifolia
Full Size ImageFlorets of Coll. No. 2397, Calamovilfa longifolia  

2397  Bromus sp. ???

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Calamovilfa longifolia (Hook.) Scribn.  Prairie Sandreed.

Dakota Ridge, Jefferson County, Colorado. Northwesternmost Golden, at the south end of the North Hogback, on a small spoils pile of some sort, 4.07 km. north northwest of the GNIS location of Golden. 39.7806N, 105.2376W. WGS 1984 Elev. 1857 m. Partially in the shade of some cottonwood trees, otherwise foothills grassland, also collected nearby: Alyssum simplex, Erodium cicutarium, Euphorbia esula, and Castilleja integra.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2397. 29-Jul-2020

Coll. No. 2397, 29 Jul 2020, characters observed: Perennial grass, 1 m., thick scaly rhizomes; Nodes, hidden by sheath; Leaves, blade and sheath differentiated; Sheath, >75 mm., open, glabrous to long straight hairs distally; Ligule, hairs, 1.5 mm.; Auricles, absent; Blade, 350 mm. × 7 mm. wide, flat; Inflorescence, 1 per culm, panicle, 180 mm. × 15 mm. wide, 3-4 branches; Rachis, glabrous, not extended; Spikelets, many, 5.5 mm. × 2.5 mm. wide, borne singly, subtended by few long silky hairs; Compression, lateral. Disarticulation, above the glumes; Glumes, lower, 3.5 mm., keeled, veins, #1, upper, 5 mm., < lowest floret, veins, #1, keeled, awns, absent; Callus, straight silky hairs, 3 mm.; Lemma, 5 mm., >glumes, lanceolate, keeled, glabrous, scarious, veins, #1, forming a tiny awn tip, awns, absent; Palea, 4.8 mm., <lemma, colorless, glabrous; Stamens, #2; Anthers, 3.8 mm.

Full Size Image
Spikelets of Coll. No. 2397, Calamovilfa longifolia
Full Size Image
Spikelets of Coll. No. 2397, Calamovilfa longifolia
  2398  Eriogonum alatum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Polygonaceae

Eriogonum alatum Torr.  Winged Buckwheat.

Dakota Ridge, Jefferson County, Colorado. Northwesternmost city limits of Golden, west side of Dakota Ridge (North Hogback), about 1/4 of the way up the west slope from Cressmans Gulch, 2.65 km. north northwest of the GNIS location of Golden. 39.7819N, 105.2384W. WGS 1984 Elev. 1874 m. Foothills grassland, below any significant concentration of shrubs, also collected here: Rhus trilobata, Tragia ramosa, Grindelia squarrosa, and Gutierrezia sarothrae.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2398. 29-Jul-2020

  2399  Grindelia squarrosa.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Grindelia squarrosa (Pursh) Dunal.  Curlycup Gumweed.

Dakota Ridge, Jefferson County, Colorado. Northwesternmost city limits of Golden, west side of Dakota Ridge (North Hogback), about 1/2 of the way up the west slope from Cressmans Gulch, 2.66 km. north northwest of the GNIS location of Golden. 39.782N, 105.2382W. WGS 1984 Elev. 1881 m. Flowers beginning to open. Foothills grassland, below any significant concentration of shrubs, also collected here: Rhus trilobata, Tragia ramosa, Eriogonum alatum, and Gutierrezia sarothrae.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2399. 29-Jul-2020

  2400  Gutierrezia sarothrae.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Gutierrezia sarothrae (Pursh) Britton & Rusby.  Broom Snakeweed.

Dakota Ridge, Jefferson County, Colorado. Northwesternmost city limits of Golden, west side of Dakota Ridge (North Hogback), about 1/2 of the way up the west slope from Cressmans Gulch, 2.66 km. north northwest of the GNIS location of Golden. 39.7821N, 105.2381W. WGS 198 Elev. 1888 m. Flowers just beginning to open. Foothills grassland, below any significant concentration of shrubs, also collected here: Rhus trilobata, Tragia ramosa, Eriogonum alatum, and Grindelia squarrosa.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2400. 29-Jul-2020

  2401  Rhus trilobata, var. trilobata assumed.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Anacardiaceae

Rhus trilobata Nutt. var. trilobata.  Skunkbush Sumac.

Dakota Ridge, Jefferson County, Colorado. Northwesternmost city limits of Golden, west side of Dakota Ridge (North Hogback), about 2/3 of the way up the west slope from Cressmans Gulch, 2.66 km. north northwest of the GNIS location of Golden. 39.7821N, 105.238W. WGS 1984 Elev. 1890 m. Fruit, hairy red berries. Mixed foothills grassland and shrubland, shrub density increasing above, also collected here: Celtis reticulata, Gutierrezia sarothrae, Tragia ramosa, Eriogonum alatum, and Grindelia squarrosa. Variety trilobata if infraspecific names are to be applied.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2401. 29-Jul-2020

  2402  Celtis reticulata.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Cannabaceae

Celtis reticulata Torr.  Net-Leaved Hackberry.

Dakota Ridge, Jefferson County, Colorado. Northwesternmost city limits of Golden, west side of Dakota Ridge (North Hogback), base of a rock outcrop, about 2/3 of the way up the west slope from Cressmans Gulch, 2.67 km. north northwest of the GNIS location of Golden. 39.7823N, 105.238W. WGS 1984 Elev. 1904 m. Mixed foothills grassland and shrubland, shrub density increasing above, also collected here: Rhus trilobata, Gutierrezia sarothrae, Tragia ramosa, Eriogonum alatum, and Grindelia squarrosa.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2402. 29-Jul-2020

  2403  Pseudognaphalium canescens.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Pseudognaphalium canescens (DC.) Anderberg.  Wright's Rabbit-Tobacco..

Dakota Ridge, Jefferson County, Colorado. Northwesternmost city limits of Golden, west side of Dakota Ridge (North Hogback), base of rock outcrop at top of ridge, 2.65 km. north northwest of the GNIS location of Golden. 39.7823N, 105.2374W. WGS 1984 Elev. 1922 m. Leaf surfaces weakly bicolor, sessile glandular beneath the tomentum. Sedimentary rock outcrops and foothills shrubland, also collected nearby: Linaria canadensis var. texana, Physaria montana, and Viola nuttallii.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2403. 29-Jul-2020

  2404  Muhlenbergia sp., probably M. montana.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Muhlenbergia montana (Nutt.) Hitchc.  Mountain Muhly.

Dakota Ridge, Jefferson County, Colorado. Northwesternmost city limits of Golden, west side of Dakota Ridge (North Hogback), near the top of ridge, 2.67 km. north northwest of the GNIS location of Golden. 39.7828N, 105.2377W. WGS 198 Elev. 1921 m. Mixed foothill shrubland, also collected nearby: Delphinium carolinianum var. virescens, Andropogon gerardii, and Schizachyrium scoparium.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2404. 29-Jul-2020

  2405  Liatris punctata.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Liatris punctata Hook.  Dotted Blazing Star.

Dakota Ridge, Jefferson County, Colorado. Northwesternmost city limits of Golden, west side of Dakota Ridge (North Hogback), about half way up the slope above Cressmans Gulch, 2.60 km. north northwest of the GNIS location of Golden. 39.7814N, 105.238W. WGS 1984 Elev. 1851 m. Foothills grassland with a few Rhus trilobata. Cercocarpus montanus higher up the slope. Also collected here: Cerastium arvense, Scutellaria brittonii, Castilleja integra, and Alyssum simplex.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2405. 29-Jul-2020

 

Locations: Deadman Gulch. Kinney Run.
Full Size ImageThree bottom plow abandoned in Kinney Run.  

Friday, 31 July 2020

Kinney Run and Deadman Gulch
  2406  Epilobium hirsutum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Onagraceae

Epilobium hirsutum L.  Hairy Willowherb.

Deadman Gulch, Jefferson County, Colorado. Near the junction of Deadman Gulch and Kinney Run, 2.28 km. south of the GNIS location of Golden 39.7304N, 105.2167W. WGS 1984 Elev. 1810 m. Forb to 1 meter, flowers magenta. In streambed. Common along Deadman Gulch below Eagleridge Drive, and Kinney Run below Deadman Gulch to US Highway 6. Colorado Noxious Weed List A.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2406. 31-Jul-2020

  2407  Cirsium arvense.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Cirsium arvense (L.) Scop.  Canada Thistle.

Deadman Gulch, Jefferson County, Colorado. Near the junction of Deadman Gulch and Kinney Run, 2.28 km. south of the GNIS location of Golden 39.7303N, 105.2167W. WGS 1984 Elev. 1812 m. South side of gulch, growing in woody shrubs. Also collected here: Epilobium hirsutum, Solanum dulcamara, and Dactylis glomerata.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2407. 31-Jul-2020

  2407.1  Dactylis glomerata.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Dactylis glomerata L.  Orchard Grass.

Deadman Gulch, Jefferson County, Colorado. Near the junction of Deadman Gulch and Kinney Run, north side of creek, 2.28 km. south of the GNIS location of Golden 39.7303N, 105.2167W. WGS 1984 Elev. 1812 m. Most culms long past maturity. Also collected here: Epilobium hirsutum, Solanum dulcamara, and Cirsium arvense.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2407.1 31-Jul-2020

  2408  Thinopyrum intermedium.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Thinopyrum intermedium (Host) Barkworth & D.R. Dewey.  Intermediate Wheatgrass.

Deadman Gulch, Jefferson County, Colorado. Near the junction of Deadman Gulch and Kinney Run, north bank of creek, 2.27 km. south of the GNIS location of Golden 39.7305N, 105.2165W. WGS 1984 Elev. 1810 m. Foothills grassland north side of creek; foothills shrubland south side of creek; Also collected here: Solanum dulcamara, Epilobium ciliatum, E. hisutum, Cirsium arvense, and Dactylis glomerata.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2408. 31-Jul-2020

  2409  Epilobium ciliatum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Onagraceae

Epilobium ciliatum Raf.  Fringed Willowherb.

Deadman Gulch, Jefferson County, Colorado. Near the junction of Deadman Gulch and Kinney Run, south bank of creek, 2.28 km. south of the GNIS location of Golden. 39.7305N, 105.2163W. WGS 1984 Elev. 1806 m. Flower color: rose. Considered to be native, but weedy. Growing with Epilobium hirsutum (Colorado List A Noxious Weed) in creekbed and adjacent bank. Foothills grassland north side of creek; foothills shrubland south side of creek; Also collected here: Solanum dulcamara, Cirsium arvense, Dactylis glomerata, and Thinopyrum intermedium.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2409. 31-Jul-2020

  2409.1  Solanum dulcamara.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Solanaceae

Solanum dulcamara L.  Climbing Nightshade.

Deadman Gulch, Jefferson County, Colorado. Near the junction of Deadman Gulch and Kinney Run, growing in the creek bed, 2.28 km. south of the GNIS location of Golden. 39.7305N, 105.2163W. WGS 1984 Elev. 1806 m. Foothills grassland north side of creek; foothills shrubland south side of creek; Also collected here: Epilobium ciliatum, E. hirsutum, Cirsium arvense, Dactylis glomerata, and Thinopyrum intermedium.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2409.1 31-Jul-2020

  2410  Grindelia squarrosa.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Grindelia squarrosa (Pursh) Dunal.  Curlycup Gumweed.

Kinney Run, Jefferson County, Colorado. Near the junction of Deadman Gulch with Kinney Run, on a small hill that is a highly eroded hogback continued from the east side of Kinney Run, 2.37 km. south of the GNIS location of Golden. 39.7301N, 105.216W. WGS 1984 Elev. 1817 m. Foothills shrubland, also collected here: Astragalus shortianus, Cynoglossum officinale, Lithospermum arvense, Scutellaria brittonii, and Toxicoscordion paniculatum.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2410. 31-Jul-2020

  2411  Acer negundo.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Sapindaceae

Acer negundo L.  Box Elder Maple.

Kinney Run, Jefferson County, Colorado. West side of Kinney Run nearing the houses of Stonebridge HOA, between Deadman Gulch and Tripp Ranch, 2.42 km. south of the GNIS location of Golden. 39.7289N, 105.2155W. WGS 1984 Elev. 1823 m. Leaves bright green, quickly turning brown in the dryer. Also seen or collected nearby: Rhus trilobata, Elaeaegnus angustifolia, Dipsacus laciniatus, and Typha latifolia.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2411. 31-Jul-2020

  2412  Dipsacus laciniata.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Dipsacaceae

Dipsacus laciniatus L.  Cutleaf Teasel.

Kinney Run, Jefferson County, Colorado. West side of Kinney Run between the creek and the houses of Stonebridge HOA, between Deadman Gulch and Tripp Ranch, 2.45 km. south of the GNIS location of Golden. 39.7287N, 105.2153W. WGS 1984 Elev. 1821 m. In a thicket of Rhus trilobata; also seen or collected nearby: Elaeagnus angustifolia, and Acer negundo. Colorado Noxious Weed List B.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2412. 31-Jul-2020

  2413  Pediomelum tenuiflorum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Fabaceae

Psoralidium tenuiflorum (Pursh) Rydb.  Slimflower Scurfpea.

Kinney Run, Jefferson County, Colorado. West side of Kinney Run, near the houses of Stonebridge HOA between Deadman Gulch and Tripp Ranch, near an unnamed ephemeral stream draining Apex Park into Kinney Run, 2.56 km. south of the GNIS location of Golden. 39.7274N, 105.2151W. WGS 1984 Elev. 1829 m. Mostly disturbed grassland at the base of a bank constructed for houses, also seen here: Andropogon gerardii.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2413. 31-Jul-2020

  2414  Sonchus oleraceus? well, the auricles are rounded, and the cypsela is ribbed but not transversely ribbed so

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Sonchus asper (L.) Hill.  Spiny Sowthistle.

Kinney Run, Jefferson County, Colorado. Steep bank of Kinney Run, just north of Tripp Ranch, 2.61 km. south of the GNIS location Golden. 39.7271N, 105.2138W. WGS 1984 Elev. 1834 m. Moist soil.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2414. 31-Jul-2020


Full Size ImageHorticultural Allium escaped to Kinney Run.
Full Size ImageHead of Coll. No. 2415, Allium proliferum  
2415  Allium sp., garden escapee.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Alliaceae

Allium proliferum (Moench) Schrad. ex Willd.  Garden Onion.

Kinney Run, Jefferson County, Colorado. In the streambed of Kinney Run, just north of Tripp Ranch, 2.68 km. south of the GNIS location of Golden. 39.7263N, 105.2137W. WGS 1984 Elev. 1832 m. Very likely a garden escapee, though a brief review of nearby gardens failed to find any cultivated specimens.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2415. 31-Jul-2020


Full Size ImageWoodsia neomexicana(?) from Alderfer/Three Sisters Park.  

Plants of Jefferson County Open Space
Jefferson County, Colorado
Dryopteridaceae

Woodsia neomexicana Windham.  New Mexico Cliff Fern.

Alderfer/Three Sisters Park, Jefferson County, Colorado. Buffalo Creek riparian drainage, 2.58 km. west of Evergreen Lake. 39.6325N, 105.3565W. WGS 1984 Elev. 2261 m. North-facing granitic outcrop, overhanging water.

Collected by permit: Jefferson County Open Space Natural Resources Staff.

Anthony Massaro s.n. 5-Aug-2020

 

Locations: Kinney Run.  

Tuesday, 11 August 2020

 

Full Size ImageColl. No. 2416, Oenothera biennis  
2416  Oenothera, probably O. biennis.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Onagraceae

Oenothera biennis L.  King's-Cureall.

Deadman Gulch, Jefferson County, Colorado. Stonebridge HOA-owned open space between Mourning Dove Lane and Blue Jay Drive, above Eagle Ridge Drive and below Jefferson County Open Space Apex Park, 4.12 km. south of the GNIS location of Golden. 39.7271N, 105.2198W. WGS 1984 Elev. 1850 m. Hairs lacking red pustular bases. Mixed foothils shrubland and grassland. Collected during CNHP survey of Stonebridge HOA open space contracted by Stewards of Golden Open Space.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich, with Susan Panjabi and Zachariah Wilson 2416. 11-Aug-2020

Coll. No. 2416, 11 Aug 2020, characters observed: Perennial (biennial?), to 60 cm., hairy throughout, hairs lacking red pustular bases; Stem, leafy; Leaves, basal, unknown, cauline, 90-115 mm. × 23-35 mm., elliptic to falcate, margin shallowly dentate, tip acute; Sepals, 11 mm., spreading to reflexed in maturity, tips barely free in bud; Flowers, solitary in leafy bracteate spike, petals, 10 mm., obovate, yellow, fading both orange and pink; Stigma, 4-lobed; Capsules, 17-21 mm., not mature;

  2417  Wild hops.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Cannabaceae

Humulus lupulus L. var. neomexicanus A. Nelson & Cockerel.  Wild Hops.

Deadman Gulch, Jefferson County, Colorado. In a small wetland in Deadman Gulch about mid-way between Kinney Run and Apex Park, 2.37 km. south of the GNIS location of Golden. 39.7292N, 105.2182W. WGS 1984 Elev. 1827 m. Sprawling in the grass and climbing on Prunus americana. Also seen or collected here: Crataegus succulenta, Prunus americana, Epilobium hirsutum, and Arctium minus. Nomenclature per FNANM.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich, with Susan Panjabi and Zachariah Wilson 2417. 11-Aug-2020

Other articles:
• Golden Checklist Flora:  Achnatherum scribneri;
Full Size ImageColl. No. 2418, Achnatherum scribneri  

2418  Achnatherum, maybe A. scribneri ???

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Achnatherum scribneri (Vasey) Barkworth.

Kinney Run, Jefferson County, Colorado. Along the cliffs on the east side of Kinney Run, south of Tripp Ranch, and north of Heritage Dells Park. 4.7 km. south of the GNIS location of Golden 39.7236N, 105.2126W. WGS 1984 Elev. 1866 m. Uunder the overhang of sandstone cliff. Coordinates estimated with GoogleEarth.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich, with Susan Panjabi and Zachariah Wilson 2418. 11-Aug-2020

Coll. No. 2418, 11 August 2020, characters observed: Perennial grass, to 47 cm., clumped; Stem, herbaceous; Leaves, blade and sheath differentiated, soft; Sheath, 96 mm., open, margin villous, villous at throat; Ligule, 0.8 mm., membraneous, lacerate or ciliate; Auricles, absent; Blade, 380 mm. × 2.4 mm. wide, revolute; Inflorescence, 1 per culm, ≤leaves, panicle, 120 mm. × 8 mm. wide, 2+ branches; Rachis, not extended, scabrous; Spikelets, many, 11 mm., similar, borne singly, stalked, pedicels 2-6.5 mm.; Compression, unremarkable; Disarticulation, above the glumes; Glumes, lower, 12.5 mm., veins, #3, upper, 9 mm., veins, #3, ±parallel, rounded, membranous, awns, absent; Florets, 1 per spikelet, bisexual; Callus, sharp; Lemma, 6.5 mm., <glumes, rolled, hairy throughout, longest hairs at apex, 2.7 mm., veins, #≥5, awns, #1, 15-16 mm., bent twice, twisted, attached, end; Palea, 2.5 mm., <lemma, membranous, keel or mid-vein, hairy, colorless, entire.

 

Locations: Deadman Gulch. Eagle Ridge. Kinney Run.
Full Size ImageCamp site on Eagle Ridge.
Full Size ImageCamp site on Eagle Ridge.  

Monday, August 17, 2020

Eagle Ridge and Deadman Gulch

Full Size ImageColl. No. 2419, Humulus lupulus  
2419  Wild hops in the open pit of a former mine.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Cannabaceae

Humulus lupulus L. var. neomexicanus A. Nelson & Cockerel.  Wild Hops.

Eagle Ridge, Jefferson County, Colorado. In a pit of a former mine on the east side of the locally named “Eagle Ridge”, 400 m. west of the intersection of US Highway 6 and Heritage Road, 3.76 km. south of the GNIS location of Golden. 39.7304N, 105.2126W. WGS 1984 Elev. 1800 m. A little past its prime, but an interesting collection given the affinity of the Hops Azure butterfly. With Cercocarpus montanus and Ribes cereum, twining on Cercocarpus montanus. Nomenclature per FNANM. This area was collected by Handsford T. Shacklette (27 Jun 1959, 24 vouchers at COLO), but Humulus was not among his collections.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2419. 17-Aug-2020

Other articles:
• Field Notes:  Coll. No. 2437, 28 Aug 2020;  

2419.1  A vine, maybe a jasmine(???) Clematis orientalis, see Coll. No. 2437, 28 Aug 2020.
  2420  Clematis ligustifolia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Ranunculaceae

Clematis ligusticifolia Nutt.  Western White Clematis.

Eagle Ridge, Jefferson County, Colorado. In a pit of a former mine on the east side of the locally named “Eagle Ridge,” 430 m. west of the intersection of US Highway 6 and Heritage Road, 3.70 km. south of the GNIS location of Golden. 39.7308N, 105.213W. WGS 1984 Elev. 1847 m. Also collected in these pits: Clematis orientalis and Humulus lupulus var. neomexicana. Vegetation outside the pits is foothills shrubland, including Cercocarpus montanus and Holodiscus dumosa.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2420. 17-Aug-2020

  2421  Ericameria nauseosa var. nauseosa.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird var. nauseosa.  Rubber Rabbitbush.

Eagle Ridge, Jefferson County, Colorado. Low on the north and east slopes of “Eagle Ridge,” an informally named hogback between US Highway 6 and Deadman Gulch (Kinney Run), 3.26 km. south of the GNIS location of Golden. 39.7336N, 105.2147W. WGS 1984 Elev. 1803 m. With Rhus trilobata, Cercocarpus montanus, Pediomelum tenuiflorum, Linum lewisii, and dried-up grasses. See also Coll. No. 2440., same taxon and location, 11 days later.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2421. 17-Aug-2020


Full Size ImageColl. No. 2422, Solidago gigantea  
2422  Solidago, maybe S. canadensis.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Solidago gigantea Aiton.  Giant Goldenrod.

Deadman Gulch, Jefferson County, Colorado. In Deadman Gulch (Kinney Run) between US Highway 6 and Eagle Ridge Drive, on the edge of the perennial creek, around the retention pond, and further upstream along the creek, 3.17 km. south of the GNIS location of Golden. 39.7341N, 105.2155W. WGS 1984 Elev. 1793 m. Inflorescence full of little crab spiders colored the same yellow as the corollas.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2422. 17-Aug-2020

Coll. No. 2422, 17 Aug 2020, characters observed: Perennial herb, 60 cm. (growing on a steep stream bank); Stem, glabrous, becoming hairy in the inflorescence; Leaves, basal unknown, cauline, alternate, petiole, 5 mm. or subsessile, blade, 90 mm. × 15 mm. wide, distally reduced in size but abundant, lanceolate-elliptic, entire, ciliate with small curved hairs, distally widely-spaced serrate; Inflorescence, pyramidal, paniculate, ±secund; Peduncles, 3-5 mm.; Involucre, 3 mm. × 4 mm. wide, spheric(?), lightly glandular; Phyllaries, unequal, 2+ series, lower <rest of involucre, green to chartaceous, margins flat; Receptacle, very short scales(?), definitely not flat; Flowers, of 2 kinds; Rays, #11, tube 2 mm. + blade 1.5 mm. × 0.3 mm. wide, yellow, fertile; Disk flowers, #7 tube 2.8 mm. + lobes 0.9 mm., throat expanding gradually, yellow, open, bisexual; Pappus, bristles, 2.8 mm., equal; Stamens, not tailed; Style, 2-branched, ±brushlike appendages; Stigma, 0.5 mm., >style appendages (0.4 mm.); Fruit, 1 mm., hairy, beak-less.

Other articles:
• Golden Checklist Flora:  Cyclachaena xanthifolia;
Full Size ImageColl. No. 2423, Cyclachaena xanthiifolia  

2423  Cyclachaena xanthiifolia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Cyclachaena xanthiifolia (Nutt.) Fresen.  Carelessweed.

Deadman Gulch, Jefferson County, Colorado. Along Deadman Gulch (Kinney Run), between US Highway 6 and Eagle Ridge Drive, collected at the edge of the concrete of the retention pond dam, 3.18 km. south of the GNIS location of Golden. 39.734N, 105.2156W. WGS 1984 Elev. 1796 m. Also seen around the edge of the pond and along the Kinney Run Trail nearly to Eagle Ridge Drive. The pond and dam were reconstructed in late 2016 so these would have established here since then.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2423. 17-Aug-2020


Full Size ImageColl. No. 2424, Salvia cf. pratensis.  
2424  Salvia, maybe S. farinacea or S. nemorosa &slquo;Blue by You’ from Darwin Perennials, per the CO-HORTS blog.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Lamiaceae

Salvia cf. pratensis L.  Meadow Clary.

Deadman Gulch, Jefferson County, Colorado. Along Deadman Gulch (Kinney Run), between US Highway 6 and Eagle Ridge Drive, on a bank of the creek, 3.24 km. south of the GNIS location of Golden. 39.7336N, 105.2157W. WGS 1984 Elev. 1792 m. Likely garden escapee.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2424. 17-Aug-2020


Full Size ImageColl. No. 2425, Arctium minus.  
2425  Burdock?

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Arctium minus Bernh.  Lesser Burdock.

Deadman Gulch, Jefferson County, Colorado. Along Deadman Gulch (Kinney Run), between US Highway 6 and Eagle Ridge Drive, on a bank of the creek, 3.24 km. south of the GNIS location of Golden. 39.7336?N, 105.2156?W. WGS 1984 Elev. 1792 m. Also seen in several other places along Deadman Gulch. Colorado Noxious Weed List C.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2425. 17-Aug-2020


Full Size ImageColl. No. 2426, Juncus articulatus.
Full Size ImageInflorescence of Coll. No. 2426, Juncus articulatus.  
2426  Juncus of some sort.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Juncaceae

Juncus articulatus L.  Joint-Leaf Rush.

Deadman Gulch, Jefferson County, Colorado. Along Deadman Gulch (Kinney Run), between US Highway 6 and Eagle Ridge Drive, on a bank of the creek, just upstream of a retention pond, 3.24 km. south of the GNIS location of Golden. 39.7336N, 105.2156W. WGS 1984 Elev. 1791 m. Also collected here: Arctium minus, Cyclachaena xanthiifolia, and a horticultural Salvia.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2426. 17-Aug-2020

Coll. No. 2426, 17 Aug 2020, characters observed: Perennial, to 30 cm., rooting at lower nodes; Leaves, sheath, 35 mm., not terminating in a bristle tip, auricles, 1.4-1.7 mm., blade, 95 mm., terete above the sheath, septate; Inflorescence, appears terminal, subtending bract 26 mm., <inflorescence, not appearing to be a continuation of stem, paniculate, many heads, flowers not subtended by a pair of scarious bracteoles, bracts subtending each flower brown; Tepals, 2.3 mm., brown, margins scarious; Stamens, #6; Capsule, 3 mm., ellipsoid, exserted 1 mm. beyond tepals. Generally thought to be circumboreal, although listed as alien by Weber & Wittmann (2012).

 

Locations: Apex Park - Northern Parcel.  

Wednesday, 19 August 2020

Apex Park - North
  2427  Geranium caespitosum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Geraniaceae

Geranium caespitosum James.  Pineywoods Geranium.

Apex Park - Northern Parcel, Jefferson County, Colorado. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, 4.42 km. south of the GNIS location of Golden. 39.7251N, 105.2174W. WGS 1984 Elev. 1824 m. Basal leaves mostly withered. Around the edges of a thicket of Crataegus succulenta, Prunus americana, and Rhus trilobata.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2427. 19-Aug-2020

  2428  Liatris punctata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Liatris punctata Hook.  Dotted Blazing Star.

Apex Park - Northern Parcel, Jefferson County, Colorado. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, 4.44 km. south of the GNIS location of Golden. 39.725N, 105.2177W. WGS 1984 Elev. 1853 m. Very short presumably because of the hot dry summer. Foothills grassland, with both foothills and riparian shrubland nearby, open southeast-facing slope with Heterotheca villosa, and Hesperostipa comata.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2428. 19-Aug-2020

  2429  Gutierrezia sarothrae.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Gutierrezia sarothrae (Pursh) Britton & Rusby.  Broom Snakeweed.

Apex Park - Northern Parcel, Jefferson County, Colorado. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, 4.44 km. south of the GNIS location of Golden. 39.7249N, 105.218W. WGS 1984 Elev. 1855 m. Flowers just beginning to open. Foothills grassland, with both foothills and riparian shrubland nearby, toe of small east-facing ridge with Helianthus pumilus, Artemisia dracunculus, and Koeleria maculata.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2429. 19-Aug-2020


Full Size ImageVoucher of Coll. No. 2430, Prunus americana.  
2430  Prunus americana.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Rosaceae

Prunus americana Marshall.  American Plum.

Apex Park - Northern Parcel, Jefferson County, Colorado. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, 4.44 km. south of the GNIS location of Golden. 39.725N, 105.2183W. WGS 1984 Elev. 1853 m. In fruit, color reddish and not bluish. Edge of dry stream bed in thicket with Crataegus succulenta and Rhus trilobata.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2430. 19-Aug-2020

  2431  Ericameria nauseosa var. graveolens.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Ericameria nauseosa (Pall. ex Pursh) G.L.Nesom & G.I.Baird var. graveolens (Nutt.) Reveal & Schuyler.

Apex Park - Northern Parcel, Jefferson County, Colorado. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, small ridge between gulches, 4.47 km. south of the GNIS location of Golden. 39.7247N, 105.2192W. WGS 1984 Elev. 1868 m. One of the early blooming plants. Mixed foothills shrubland and grassland, also seen or collected here: Artemisia dracunculus, Senecio spartioides, Solidago missouriensis, and Xanthisma spinulosum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2431. 19-Aug-2020

Other articles:
• Golden Checklist Flora:  Eriogonum effusum;
Full Size ImageVoucher of Coll. No. 2431.1, Eriogonum effusum  

2431.1  Erigonum effusum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Eriogonum effusum Nutt.  Spreading Buckwheat.

Apex Park - Northern Parcel, Jefferson County, Colorado. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, small ridge between gulches, 4.47 km. south of the GNIS location of Golden. 39.7247N, 105.2192W. WGS 1984 Elev. 1868 m. Most leaves withered. Mixed foothills shrubland and grassland. Also seen or collected here: Artemisia dracunculus, Ericameria nauseosa var. graveolens, Senecio spartioides (in bud, no flowers), Solidago missouriensis, and Xanthisma spinulosum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2431.1 19-August-2020

  2431.2  Artemisia dracunculoides.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Artemisia dracunculus L.  Tarragon, Dragon Wort.

Apex Park - Northern Parcel, Jefferson County, Colorado. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, small ridge between gulches, 4.47 km. south of the GNIS location of Golden. 39.7247N, 105.2192W. WGS 1984 Elev. 1868 m. These with leaf galls. Mixed foothills shrubland and grassland. Also seen or collected here: Eriogonum effusum, Ericameria nauseosa var. graveolens, Senecio spartioides (in bud, no flowers), Solidago missouriensis, and Xanthisma spinulosum.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2431.2 19-Aug-2020

Literature Cited:
- Semple, John C., 2016.
- Semple, John C., Katherine Kornobis, and Sofia Bzovsjy, 2018.
- Semple, John C., 2018.  

2432  Solidago missouriensis.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Solidago nemoralis Aiton var. decemflora (DC.) Brammall ex Semple.  Gray Goldenrod.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.46 km. south of the GNIS location of Golden. 39.7248N, 105.2193W. WGS 1984 Elev. 1869 m. Small patch perhaps 3 meters across. Mixed foothils grass- and shrub-land. Also collected nearby: Eriogonum effusum, Artemisia dracunculus, Ericameria nauseosa var. graveolens, Senecio spartioides, and Xanthisma spinulosum; the grasses having long since senesced. Compare to Coll. No. 2433, collected 140 m. southwest.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2432. 19-Aug-2020

Coll. No. 2432 & 2433, 19 Aug 2020, characters observed: Perennial, 30-47 cm., stem and leaves short hairy throughout, getting a little glandular in the inflorescence; Leaves, basal, absent, withered(?), cauline, alternate, oblanceolate, 75 mm. × 12 mm. wide in #2432 vs. 75 mm. × 27 mm. wide in #2433, reduced above, distally shallowly toothed, veins, #3, lateral veins less prominent but clearly present; Inflorescence, panicle, compact, branches secund; Involucre, 4-5 mm., Phyllaries, imbricate in 3+ series, inner, > outer, oblong, 3.6 mm. × 1 mm. wide, veins, #1, tips, rounded; Flowers, of 2 kinds; Rays, #7(8), tube 2.6 mm. + blade 1.8 mm., yellow, fertile; Disk flowers, #5, tube 2.0-2.5 mm. + lobes 1.0-1.3 mm., yellow; Pappus, bristles, 4 mm.

I'm not sure what this is. It keys to Solidago nemoralis var. decemflora in Ackerfield (2015), but does not look much like photos or voucher images on SEINet. It keys to S. nana in Weber & Wittmann (2012), but also does not look much like photos or voucher images on SEINet. It does seem to fit into Solidago subsect. nemorales per Semple (2018). I suppose it could be a hybrid of some sort. I am open to other suggestions.

Tom Schweich
tomas@schweich.com
510-701-3418
https://www.schweich.net

Full Size Image
Coll. No. 2432, Solidago nemoralis var. decemflora
Full Size Image
Voucher of Coll. No. 2432, Solidago nemoralis var. decemflora.
Full Size Image
Flower parts of Coll. Nos. 2432 & 2433, Solidago nemoralis var. decemflora.

Full Size ImageColl. No. 2434, Xanthisma spinulosum  
2432.1  Comp with spiny leaves, -- Xanthisma spinulosum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Xanthisma spinulosum (Pursh) D. R. Morgan & R. L. Hartm.  Spiny Goldenweed.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast quadrant of Apex Park - North Parcel, high plains at the base of the Rocky Mountains foothills scarp, 4.47 km. south of the GNIS location of Golden. 39.7248N, 105.2193W. WGS 1984 Elev. 1869 m. In the middle of a small patch of Solidago sp. Mixed foothills shrub- and grass-land. Also collected nearby: Eriogonum effusum, Artemisia dracunculus, Ericameria nauseosa var. graveolens, and Senecio spartioides; the grasses having long since senesced due to the hot dry summer. Several other collections and observations of this taxon nearby.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2432.1 19-Aug-2020


Full Size ImageHabit of Coll. No. 2433, Solidago missouriensis
Full Size ImageLocation of a large colony of Solidago missouriensis in Apex Park.
Full Size ImageColl. No. 2433, Solidago nemoralis var. decemflora  
2433  Solidago missouriensis.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Solidago nemoralis Aiton var. decemflora (DC.) Brammall ex Semple.  Gray Goldenrod.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.56 km. south of the GNIS location of Golden. 39.7239N, 105.2198W. WGS 1984 Elev. 1886 m. Leaves strongly 3-nerved, inflorescences with many mating assassin bugs. Large patch perhaps 40 m. × 10 m. Mixed foothills grass- and shrub-land, the grasses having long since senesced in this long, hot, dry summer. Compare to Coll. No. 2432, made 140 m. to the northeast.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2433. 19-Aug-2020

Coll. No. 2432 & 2433, 19 Aug 2020, characters observed: Perennial, 30-47 cm., stem and leaves short hairy throughout, getting a little glandular in the inflorescence; Leaves, basal, absent, withered(?), cauline, alternate, oblanceolate, 75 mm. × 12 mm. wide in #2432 vs. 75 mm. × 27 mm. wide in #2433, reduced above, distally shallowly toothed, veins, #3, lateral veins less prominent but clearly present; Inflorescence, panicle, compact, branches secund; Involucre, 4-5 mm., Phyllaries, imbricate in 3+ series, inner, > outer, oblong, 3.6 mm. × 1 mm. wide, veins, #1, tips, rounded; Flowers, of 2 kinds; Rays, #7(8), tube 2.6 mm. + blade 1.8 mm., yellow, fertile; Disk flowers, #5, tube 2.0-2.5 mm. + lobes 1.0-1.3 mm., yellow; Pappus, bristles, 4 mm.

Compared to Coll. No. 2439, Solidago nana, below, these are for primary differences:

  • Leaf lateral veins more prominent.
  • The number and proportion of ray flowers to disk flowers: 7 and 5 vs. 5 and 9.
  • Disk flower lobes longer.
  • Pappus longer.

I'm not sure what this is. It keys to Solidago nemoralis var. decemflora in Ackerfield (2015), but does not look much like photos or voucher images on SEINet. It keys to S. nana in Weber & Wittmann (2012), but also does not look much like photos or voucher images on SEINet. It does seem to fit into Solidago subsect. nemorales per Semple (2018). I suppose it could be a hybrid of some sort. I am open to other suggestions.

Tom Schweich
tomas@schweich.com
510-701-3418
https://www.schweich.net

Full Size Image
Voucher of Coll. No. 2433, Solidago nemoralis var. decemflora.
Full Size Image
Flower parts of Coll. Nos. 2432 & 2433, Solidago nemoralis var. decemflora.

Full Size ImageDetail of Coll. No. 2434, Xanthisma spinulosum  
2434  Xanthisma spinulosum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Xanthisma spinulosum (Pursh) D. R. Morgan & R. L. Hartm.  Spiny Goldenweed.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast quadrant of Apex Park - North Parcel, high plains at the base of the Rocky Mountains foothills scarp, 4.63 km. south of the GNIS location of Golden. 39.7236N, 105.219W. WGS 1984 Elev. 1885 m. Plants in various stages of bud, flower, and fruit. East-facing slope above an unnamed gulch. Mixed foothills shrub- and grass-land, though mostly grasses here, which have long since senesced because of the hot dry summer. Same as Coll. No. 2432.1.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Tom Schweich 2434. 19-Aug-2020

Other articles:
• Golden Checklist Flora:  Epilobium hirsutum;

Locations: Deadman Gulch.
Full Size ImageDeadman Gulch in Stonebridge HOA  

Deadman Gulch
Full Size Image
Wild hops growing on Chokecherry, with Hairy Willow herb below.
Full Size Image
Hairy Willow Herb (Epilobium hirsutum) in Deadman Gulch.
Full Size Image
Deadman Gulch on private land between Stonebridge HOA and Jefferson County Open Space.
Full Size Image
Deadman Gulch from the west.
Full Size Image
Hairy Willow Herb (Epilobium hirsutum) in Deadman Gulch.

Locations: Deadman Gulch.
Full Size ImageLocation of Coll. No. 2435, Parthenocissus vitacea  

2435  Woodbine, for sure, maybe Parthenocissus vitacea, large leaves, but otherwise sterile and unidentifiable.
  2436  Physalis, probably P. hederifolia.

 

Locations: Deadman Gulch. Eagle Ridge. Kinney Run.
Full Size ImageSeed of Eriogonum alatum  

Friday, 28 August 2020

Eagle Ridge, Deadman Gulch, and Kinney Run

Other articles:
• Field Notes:  Coll. No. 2419.1, 17 Aug 2020;
Full Size ImageColl. No. 2437, Clematis orientalis  

2437  Clematis orientalis. p>
Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Ranunculaceae

Clematis orientalis L.  Oriental Virginsbower.

Eagle Ridge, Jefferson County, Colorado. In a former mine pit on the east side of “Eagle Ridge,” an informal name for a hogback between US Highway 6 and Eagle Ridge Drive, 3.76 km. south southeast of the GNIS location of Golden. 39.7305N, 105.2126W. WGS 1984 Elev. 1850 m. Also found in this pit: Humulus lupulus var. neomexicanus; Clematis ligusticifolia in the next pit to the north, vegetation just outside the pit is foothills shrubland above grassland. Colorado Noxious Weed List B

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2437. 28-Aug-2020


Full Size ImageColl. No. 2438, Xanthisma spinulosum  
2438  Xanthisma spinulosa.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Xanthisma spinulosum (Pursh) D. R. Morgan & R. L. Hartm.  Spiny Goldenweed.

Eagle Ridge, Jefferson County, Colorado. Northeast limb of “Eagle Ridge,” an informal name for a hogback between US Highway 6 and Eagle Ridge Drive, 3.66 km. south southeast of the GNIS location of Golden. 39.7311N, 105.2126W. WGS 1984 Elev. 1831 m. Foothills grassland below shrubland, with Artemisia dracunculus, Ericameria nauseosa var. nauseosa, Helianthus pumilis, Bromus inermis, and a Poa.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2438. 28-Aug-2020


Full Size ImageColl. No. 2439, Solidago nana.  
2439  Solidago, maybe S. nana.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Solidago nana Nutt.  Baby Goldenrod.

Eagle Ridge, Jefferson County, Colorado. At the north end of “Eagle Ridge,” an informally named hogback between US Highway 6 and Eagle Ridge Drive, under the powerline tower, 3.36 km. south southeast of the GNIS location of Golden. 39.7328N, 105.215W. WGS 1984 Elev. 1846 m. Ponderosa pines and foothills shrubland, mostly Cercocarpus montanus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2439. 28-Aug-2020

Coll. No. 2439, 28 August 2020, characters observed: Perennial herb, 25-30 cm., from a stout creeping caudex, short hairy throughout; Leaves, basal, petiole 30 mm. + blade 50 mm. × 18 mm. wide, obovate (almost spathulate), cauline, subsessile, 23 mm. × 8 mm wide, reduced distally, oblanceolate, entire, veins, #3, but lateral veins very obscure, eglandular, margins, entire, ciliate, tips, acuminate; Inflorescence, pyramidal, branches, secund, not overtopped by leaves; Peduncles, 1.0-1.3 mm.; Involucre, 3.5 mm. × 2.5-3.0 mm. wide, campanulate; Phyllaries, unequal, in 3+ series, upper, largest, 3 mm. × 1.3 mm. wide, veins, 1 prominent, maybe 2 lateral very obscure, green, margin, chartaceous, flat, tips, rounded, few little hairs; Receptacle, epaleate; Flowers, of 2 kinds; Rays, #5, tube 2 mm. + blade 1.2 mm. × 0.6 mm. wide, yellow, fertile; Disk flowers, #9, tube 3 mm. + lobes 0.7 mm., throat expanding gradually, yellow; Pappus, many, well-developed, bristles, 2.7 mm., ±equal.

Locations: Eagle Ridge.
Full Size ImageHabitat of Coll. No. 2440, Ericameria nauseosa var. nauseosa
Full Size ImageColl. No. 2440, Ericameria nauseosa var. nauseosa  

2440  Ericameria nauseosa var. nauseosa.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird var. nauseosa.  Rubber Rabbitbush.

Eagle Ridge, Jefferson County, Colorado. North slope of “Eagle Ridge,” an informally named hogback between US Highway 6 and Deadman Gulch (Kinney Run), just below the Cercocarpus montanus, 3.26 km. south of the GNIS location of Golden. 39.7335N, 105.2149W. WGS 1984 Elev. 1806 m. Shrubs are 15-20 cm. in height, much shorter than our more common variety graveolens. This particular shrub is phenologically ahead of others nearby. See also Coll. No. 2421, same taxon and location, 11 days earlier.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2440. 28-Aug-2020

Full Size Image
Coll. No. 2440, Ericameria nauseosa var. nauseosa
  2441  Symphyotrichum laeve — Nope, hairs in lines decurrent with the leaves.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Asteraceae

Symphyotrichum lanceolatum (Willd.) G. L. Nesom ssp. hesperium (A. Gray) G. L. Nesom.  Western Lance-Leaved Aster.

Deadman Gulch, Jefferson County, Colorado. On the edge of the streambed in Deadman Gulch (Kinney Run), above US Highway 6 and just below Eagle Ridge Drive, 3.43 km. south of the GNIS location of Golden. 39.7322N, 105.2159W. WGS 1984 Elev. 1794 m. Riparian, also seen or collected nearby: Clematis ligusticifolia, Mirabilis nyctaginea, Crataegus succulenta, and Epilobium hirsutum.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2441. 28-Aug-2020


Full Size ImageColl. No. 2442, Arrhenatherum elatius  
2442  Definitely a grass, maybe Muhlenbergia montana.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Poaceae

Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl.  Tall Oatgrass.

Deadman Gulch, Jefferson County, Colorado. On the edge of the streambed in Deadman Gulch (Kinney Run), above US Highway 6 and just below Eagle Ridge Drive, 3.43 km. south of the GNIS location of Golden. 39.7321N, 105.2158W. WGS 1984 Elev. 1803 m. Riparian, also seen or collected nearby: Clematis ligusticifolia, Mirabilis nyctaginea, Crataegus succulenta, Epilobium hirsutum, and Symphyotrichum lanceolatum var. hesperium.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2442. 28-Aug-2020

Coll. No. 2442, 28 August 2020, characters observed: Perennial, to 115 cm., tufted, no rhizomes observed; Leaves, sheath, 100 mm., open, ligule, 2.5 mm., membranous, erose, blade, 30 mm. × 5 mm. wide, flat, barely scabrous; Inflorescence, 1 per culm, >leaves, panicle, 200 mm. × 40 mm. wide; Rachis, not extended, delicate; Spikelets, many, 8 mm. × 2.3 mm. wide + awn, similar, borne singly; Disarticulation, above the glumes; Glumes, very thin, translucent, lower, 5 mm., veins, #1, tip bifid, upper, 9 mm., =lowest floret, veins, #3, ±parallel, awns, absent; Florets, 2 per spikelet; Callus, straight hairs, 2.3 mm.; Lemma, 8 mm., =glumes, veins, #7, awn, #1, 14 mm., twisted, round, attached near base (2.3/8.0); Palea, 6 mm., membranous, margin, ciliate.

  2442.1  Mirabilis nyctaginaea.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Nyctaginaceae

Mirabilis nyctaginea (Michx.) MacMill.  Heartleaf Four O'Clock.

Deadman Gulch, Jefferson County, Colorado. On the bank southwest side above the creek in Deadman Gulch (Kinney Run), above US Highway 6 and just below Eagle Ridge Drive, 3.43 km. south of the GNIS location of Golden. 39.7321N, 105.2158W. WGS 1984 Elev. 1803 m. Riparian, also seen or collected nearby: Clematis ligusticifolia, Crataegus succulenta, Epilobium hirsutum, Symphyotrichum lanceolatum var. hesperium, and Arrhenatherum eliatus.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2442.1 28-Aug-2020

 

Other articles:
• Golden Checklist Flora:  Clematis orientalis;
Full Size ImageClematis orientalis, a List B noxious weed on the fence beside the Clear Creek Trail.
Full Size ImageClematis orientalis in a tree beside Clear Creek.  

29 August 2020

Walk along Clear Creek Trail.

Other articles:
• Magpie Gulch Trail:   at New Loveland Mine Park;

Locations: New Loveland Mine Park.
Full Size ImageInformational sign at New Loveland Mine Park.  

Full moon tomorrow night.
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Moonrise at New Loveland Mine Park.
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Moonrise at New Loveland Mine Park.

 

Locations: Deadman Gulch.  

Friday, September 4, 2020

Kinney Run and Deadman Gulch to look at plums.

Other articles:
• Golden Checklist Flora:  Prunus americana;  Prunus americana, additional information;
Full Size ImageColl. No. 2443, Prunus americana
Full Size ImageColl. No. 2443, Prunus americana  

2443  Prunus americana, in fruit.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado
Rosaceae

Prunus americana Marshall.  American Plum.

Deadman Gulch, Jefferson County, Colorado. Around edges of small wetland in Deadman Gulch, 3.80 km. south of the GNIS location of Golden. 39.7294N, 105.2178W. WGS 1984 Elev. 1823 m. Fruit reddish-purple, slightly glaucous, not bluish at all. Climbed upon by Humulus lupulus, also here: Epilobium hirsutum, and E. ciliatum, Urtica dioica, and Crataegus succulenta.

Collected by permit: City of Golden, 2020, issued: Apr 9, 2020, to: Tom Schweich.

Tom Schweich 2443. 4-Sep-2020

Full Size Image
Coll. No. 2443, Prunus americana

 

Other articles:
• 4th Street:  1004 4th Street;
• Golden Checklist Flora:  Senecio spartioides;  Senecio spartioides, additional information;
Full Size Image1004 4th Street.
Full Size ImageSenecio spartioides adventive in my garden.  

A Very Smokey Sunday, September 6, 2020

Full Size Image
Senecio spartioides adventive in my garden.
 

 

Other articles:
• Clear Creek Trail:   at bridge;  below 10th;  bet. 9th and 10th;

Locations: Mount Galbraith. Tucker Gulch (lower).
Full Size ImageHairy Willowherb in Tucker Gulch above 10th Street  

Monday, September 14, 2020

Walk down Tucker Gulch, along Clear Creek, and return via the Magpie Gulch Trail.
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Hairy Willowherb in Tucker Gulch between 10th and Water Streets
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More Hairy Willowherb in Tucker Gulch near Clear Creek.
Full Size Image
View of Mt Galbraith from Magpie Gulch Trail

 

Other articles:
• Recreational Trail (Pine Ridge Estates):   near Jesse Ln;

Locations: Dakota Ridge.
Full Size ImageDakota Ridge from the Cul-de-sac at the end of Jesse Lane.  

Thursday, September 17, 2020

Dakota Ridge with the Mines Bighorn Team
Full Size Image
Definitely a Coryphantha, likely C. vivipara
Full Size Image
Western Poison Ivy on the backbone of Dakota Ridge.
Full Size Image
Opuntia polyacantha on Dakota Ridge.

Other articles:
• Arapahoe Street:   near 5th;
Full Size ImageParkway almost ready to plant.
Full Size ImageParkway almost ready to plant.  

Photographs of parkway at 5th and Arapahoe, the site of my next prairie project.
Full Size Image
Parkway almost ready to plant.
Full Size Image
Parkway almost ready to plant.

 

Other articles:
• Glossary:  conglomerate;

Locations: Dakota Ridge.
Full Size ImageOutcrop with pebble conglomerate on Dakota Ridge.  

Monday, September 21, 2020

Full Size Image
Pebbly conglomerate on Dakota Ridge.
 

 

Other articles:
• Lubahn Trail (South Loop):   at rim;   just below rim;   just above spur;   at Olivine Trl;   at s.b. 5;   at s.b. 4;   at s.b. 3;   at s.b. 2;   at switch back;   at trailhead;
• Lubahn Spur:   at n edge;   center of outcrop;
• Old Quarry Trail:   at w. end;   at Olivine Trl;   at social trail;  along trail;   along trail;   at Dome Flow Trl;
• Olivine Trail:   at Old Quarry Trl;   at s.b. 10;   along trail;   below G;   at s.b. 8;   at s.b. 7;   at Lubahn Trl;
• Glossary:  conglomerate;

Locations: South Table Mountain.
Full Size ImageTrailhead at south end of Belvedere Street.  

Tuesday, September 22, 2020

Full Size Image
Switchback #1: The view is looking northwest.
Full Size Image
Switchback #2: view to southeast directly into the sun.
Full Size Image
Switchback #3: view to northwest.
Full Size Image
Switchback #4: view southeast, into the sun.
Full Size Image
Switchback #5: view northwest.
Full Size Image
Switchback #6: view southeast.
Full Size Image
The old Lubahn Trail, eventually goes through the gap at right.
Full Size Image
Switchback #7: view of Castle Rock to the northwest.
Full Size Image
Switchback #8: short-cutting the trail already.
Full Size Image
Switchback #8: view southeast.
Full Size Image
The “G” from the Olivine Trail.
Full Size Image
Lower rim of South Table Mountain from Olivine Trail.
Full Size Image
Switchback #9: view southwest.
Full Size Image
Switchback #10: view northeast.
Full Size Image
Brickellia californica growing in the cliffs.
Full Size Image
West end of Old Quarry Trail.
Full Size Image
Closed for Restoration.
Full Size Image
Beginning of the Olivine Trail.
Full Size Image
Junction with Old Quarry Trail.
Full Size Image
Social trail to Castle Rock.
Full Size Image
Old Quarry Trail.
Full Size Image
West end of the Dome Flow Trail.
Full Size Image
Old Quarry Trail
Full Size Image
Back side of Castle Rock.
Full Size Image
Basal conglomerate.
Full Size Image
Interbedded fluvial deposits.
Full Size Image
South end of outcrop.
Full Size Image
Upcoming restoration.
 

 

Other articles:
• 5th Street:   at Cheyenne;
Full Size ImageAutumn afternoon light at 5th and Cheyenne.  

Saturday, October 17, 2020

 

Locations: Ranson/Edwards Homestead Open Space Park.
Full Size ImageThe chair along the trail.
Full Size ImageOld ranch road to original homestead.  

Sunday, November 1st

A little ramble at Ranson/Edwards.

Locations: North Table Mountain.
Full Size ImageNorth Golden from North Table Mountain.
Full Size ImageAcross the top of North Table Mountain.  

Friday, November 6th

Climbed the west face of North Table Mountain by way of the City of Golden North Table Mountain trail, and then popping up on the mesa on the social trail. Went up to the highpoint (benchmark) and then came down the Golden Cliffs Trail.
Full Size Image
Dakota Ridge (North Hogback) from North Table Mountain.
Full Size Image
Denver from North Table Mountain

Full Size ImageColl. No. 2445, Opuntia polyacantha  
2445  Opuntia polyacantha? There seems to be two forms here, a short-spined form and a long-spined form.

 

Other articles:
• Lookout Mountain Road:  Buffalo Bill Museum;
Full Size ImageOut looking for the comet.  

Monday, December 21, 2020

Out looking for the comet, next to some planet.

 

Other articles:
• Cheyenne Street:   at 708 Cheyenne;
Full Size Image708 Cheyenne, new building.  

Thursday, December 31, 2020

What we got at 708 Cheyenne.
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Date and time this article was prepared: 5/26/2021 8:52:00 PM