![]() | Field Notes (Continued) |
Tom Schweich |
![]() Topics in this Article: 1800s 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990 1991 1992 1993 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2008 Tour de Swertia albomarginata Mono Lake, August 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 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. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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2016
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| Saturday, February 6th
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From the Nevada Appeal, 10 February 2016:
| Completion of 17 1/2 miles of new highway which connects by a more direct route the county seats of Bridgeport in Mono County and Markleeville in Alpine County will be celebrated by the boards of supervisors of the two counties with a dedication ceremony Sunday, when the new road will be opened formally to traffic.
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| Thursday, February 18th
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| Saturday, February 28th
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| Thursday, March 3rd
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| Monday, April 4th
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Locations:
Sierra Blanca.
Spanish Peaks.
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Locations:
Great Sand Dunes National Park.
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| Tuesday, April 5th
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Locations:
Monte Vista National Wildlife Refuge.
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Monte Vista National Wildlife Refuge
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Locations:
Rio Grande.
Rio Grande.
Rio Grande State Wildlife Area.
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Locations:
Alamosa National Wildlife Refuge.
Rio Grande.
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Locations:
Hansen Bluff.
Sierra Blanca.
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Locations:
Alamosa.
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Locations:
Russell Lakes State Wildlife Area.
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Locations:
Villa Grove.
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Locations: Colorado School of Mines Survey Field.
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| Saturday, April 9thColorado School of Mines, Survey Field, early spring, looking primarily for the Townsendia.
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1301
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Viola nuttallii Pursh. Nuttall's Violet.
| Colorado School of Mines Survey Field, Jefferson County, Colorado. Along the access road to the City of Golden water tank, 210 m from Lookout Mountain Road, 2 km south southwest of the GNIS location of Golden. 39.7387°N, 105.2284°W. WGS 1984. Elev. 1870 m. South-facing slope of ditch, early-blooming perennial, grass is still very short.
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1302
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Alyssum simplex Rudolphi. European Madwort.
| Colorado School of Mines Survey Field, Jefferson County, Colorado. Along the access road to the City of Golden water tank, 210 m from Lookout Mountain Road, 2 km south southwest of the GNIS location of Golden. 39.7387°N, 39.7387°E. WGS 1984 Elev. 1865 m. Small plants, on south-facing bank, early spring, grass still very short, with Viola nuttallii.
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1303
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Colorado School of Mines Survey Field, Jefferson County, Colorado. Center of Survey Field, 525 m south of Beverly Heights Park, 2.2 km south southwest of the GNIS location of Golden 39.7365°N, 105.2261°W. WGS 1984 Elev. 1873 m. South-facing slope of rocky older alluvium.
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1304
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Field determination: Townsendia hookeri
| Townsendia hookeri Beaman. Hooker's Townsend Daisy. Colorado School of Mines Survey Field, Jefferson County, Colorado. Center of Survey Field, 525 m south of Beverly Heights Park, 2.2 km south southwest of the GNIS location of Golden. 39.7366°N, 105.2262°W. WGS 1984 Elev. 1879 m. Scattered, uncommon at this location. South-facing slope of rocky older alluvium. Coll. No. 1304, 9 April 2016, characters observed: Perennial, acaulescent, Leaves, narrowly oblanceolate, strigose; Head, sessile (or apparently so), 12 mm. × 10-12 mm. wide; Phyllaries, many series, 8 mm., outer hairy, tipped by a tuft of tangled cilia, inner, margins and tip ciliate, but not tangled; Rays, #25-30, corolla 10 mm., white, pappus bristles, 5 mm.; Disc flowers, corolla 4.5 mm., yellow, pappus, 6 mm., bristles.
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1305
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Dandelion, large round head.
| Taraxacum officinale F. H. Wigg. Common Dandelion. Colorado School of Mines Survey Field, Jefferson County, Colorado. Center of Survey Field, 525 m south of Beverly Heights Park, 2.2 km south southwest of the GNIS location of Golden. 39.7366°N, 105.2262°W. WGS 1984 Elev. 1870 m. One plant, selected because of very large, globose inflorescence.
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1306
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Field identification: Dandelion.
| Taraxacum officinale F. H. Wigg. Common Dandelion. Colorado School of Mines Survey Field, Jefferson County, Colorado. Northern portion of Survey Field, 2 km south southwest of the GNIS location of Golden. 39.7379°N, 105.2277°W. WGS 1984 Elev. 1862 m. Numerous plants beside an ephemeral stream.
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1307
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Field determination: Claytonia lanceolata Pursh. Lanceleaf Springbeauty.
| Windy Saddle Park, Jefferson County, Colorado. Lower slopes of Lookout Mountain, 2.23 km southwest of the GNIS location of Golden. 39.7371°N, 105.2322°W. WGS 1984 Elev. 1944 m. Numerous plants around edges of Rhus shrubs. Hillside above Colorado School of Mines Survey Field.
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Locations: North Table Mountain Park.
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| Tuesday, April 12thNorth Table Mountain, Cottonwood Canyon to basalt quarry.
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1308
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Chorispora tenella (Pall.) DC. Crossflower. North Table Mountain Park, Jefferson County, Colorado. Just inside North Table Mountain Park, southeast side of North Table Mountain, about 150 m, northwest of the trailhead for the Neighborhood Access Trail at the corner of Ridge Road and Ulysses Avenue, 2.9 km northeast of the GNIS location of Golden. 39.7736°N, 105.1974°W. WGS 1984 Elev. 1728 m. Possibly at a former home site.
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1309
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Field determination: Berberis repens
| Berberis repens Lindl. Creeping Barberry. North Table Mountain Park, Jefferson County, Colorado. Just inside North Table Mountain Park, southeast side of North Table Mountain, about 150 m, northwest of the trailhead for the Neighborhood Access Trail at the corner of Ridge Road and Ulysses Avenue, 2.9 km northeast of the GNIS location of Golden. 39.774°N, 105.1977°W. WGS 1984 Elev. 1751 m. Few plants on strath above creek; many more plants at higher and drier locations.
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1310
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Field determination: Muscari botryoides, naturalized.
| Muscari botryoides (L.) Mill. Common Grape Hyacinth. North Table Mountain Park, Jefferson County, Colorado. Just inside North Table Mountain Park, southeast side of North Table Mountain, about 150 m, northwest of the trailhead for the Neighborhood Access Trail at the corner of Ridge Road and Ulysses Avenue, 2.9 km northeast of the GNIS location of Golden. 39.774°N, 105.1977°W. WGS 1984 Elev. 1748 m. Near a former home site, probably naturalized.
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1311
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Field determination: Leucocrinum montanum
| Leucocrinum montanum Nutt. ex A. Gray. Star Lily. North Table Mountain Park, Jefferson County, Colorado. Just inside North Table Mountain Park, southeast side of North Table Mountain, about 200 m, northwest of the trailhead for the Neighborhood Access Trail at the corner of Ridge Road and Ulysses Avenue, 2.9 km northeast of the GNIS location of Golden. 39.7745°N, 105.1972°W. WGS 1984 Elev. 1766 m. Grassy slopes above the trail, but the grass is very short because it is still very early spring here; more common on slopes above.
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Locations:
North Table Mountain Park.
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Two small Corydalis aurea along the North Table Loop.
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1312
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Field determination: Claytonia rosea, basal leaves present at flowering.
| Claytonia rosea Rydb. Rocky Mountain Springbeauty. North Table Mountain Park, Jefferson County, Colorado. Along the North Table Loop, southeast side of North Table Mountain, approximately 1/2 km west of the Neighborhood Access Trail trailhead at Ridge Road and Ulysses Avenue, 2.6 km northeast of the GNIS location of Golden. 39.7738°N, 105.2019°W. WGS 1984 Elev. 1876 m. Basal leaves present at flowering. East to northeast-facing grassy slope.
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Locations:
Ranson/Edwards Homestead Open Space Park.
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| Thursday, April 14th.
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1313
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Field determination: Viola nuttallii
| Viola nuttallii Pursh. Nuttall's Violet. Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Southern section of park, 115 m north of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. 39.8796°N, 105.2701°W. WGS 1984 Elev. 1994 m. One of the earliest flowers in bloom here.
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1314
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Field determination: Taraxacum officinale
| Taraxacum officinale F. H. Wigg. Common Dandelion. Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Southern section of park, 115 m north of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. 39.8796°N, 105.2701°W. WGS 1984 Elev. 1992 m. One of the earliest flowers in bloom, collected with Viola nuttallii.
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1315
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Field determination: Townsendia hookeri
| Townsendia hookeri Beaman. Hooker's Townsend Daisy. Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Southern section of park, 360 m northwest of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. 39.8806°N, 105.2731°W. WGS 1984 Elev. 2016 m. Rocky alluvial terrace.
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Frasera speciosa beginning to send up a flowering stalk, and an unknown Brassicaceae.
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1316
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Field determination: Pinus ponderosa.
| Pinus ponderosa Laws. Ponderosa Pine. Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Southern section of park, 400 m west northwest of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. 39.8804°N, 105.2738°W. WGS 1984 Elev. 2044 m. Upper slopes just below the railroad tracks.
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| Friday, April 22nd
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1317
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Field identification: Taraxacum officinale.
| Taraxacum officinale F. H. Wigg. Common Dandelion. North Table Mountain, Jefferson County, Colorado. On the City of Golden North Table Mountain trail, just below the southwest rim of North Table Mountain, 1.9 km north of the GNIS location of Golden. 39.7727°N, 105.224°W. WGS 1984 Elev. 1906 m. Flat area beside the trail.
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1318
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Field identification: Corydalis aurea.
| Corydalis aurea Willd. Scrambled Eggs. North Table Mountain, Jefferson County, Colorado. On the City of Golden North Table Mountain trail, just below the southwest rim of North Table Mountain, 1.9 km north of the GNIS location of Golden. 39.7727°N, 105.2239°W. WGS 1984 Elev. 1926 m. Rocky open slopes above the trail. Small plants here, one larger plant in the basalt rim of the mesa.
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Other articles:
Locations:
Cucharas Pass.
La Veta.
North Lake.
Pikes Peak.
South Fork Purgatoire River.
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| Tuesday, April 26th
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| Wednesday, April 27th
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Near the former town of Thatcher on US Highway 50 to La Junta from Trinidad.
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Locations:
Purgatoire Canyon.
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Locations:
Vogel Canyon.
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Locations:
Bent's Old Fort National Historic Site.
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| Thursday, April 28th
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Locations:
Sand Creek Massacre National Historic Site.
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Locations:
Cheyenne Wells.
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| Wednesday, May 4thNorth Table Mountain, by way of the Golden Cliffs Trail to the Climbing Access Trail, then over the rim on an social trail route. From the top, used the social trail to the North Table Mountain Trail, then a social trail to the Golden Cliff Preserve parking lot.
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1319
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Field identification: Ribes aureum.
| Ribes aureum Pursh. Golden Currant. North Table Mountain Park, Jefferson County, Colorado. Along the lower portion of the Golden Cliffs Trail, about 150 m. from the parking lot and trailhead,1.4 km. northeast of the GNIS location of Golden. 39.7668°N, 105.2136°W. WGS 1984 Elev. 1787 m. In a protected little rock enclosure, southeast aspect, more along the trail above. Coll. No. 1319, 4 May 2016: Perennial shrub, to 1 m.; Stem, unarmed; Leaves, fascicled, broadly ovate, 29 mm. × 22 mm. wide, lobes 3, obtuse; Hypanthium, 9 mm., bright yellow; Sepals, petaloid, 5 mm.; Petals, 2.5 mm.; Ovary, 2 mm.
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1320
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Field identification: Mertensia lanceolata
| Mertensia lanceolata (Pursh) DC. Prairie Bluebells. North Table Mountain Park, Jefferson County, Colorado. Along the lower portion of the Golden Cliffs Trail, about 200 m. from the parking lot and trailhead,1.5 km. northeast of the GNIS location of Golden. 39.767°N, 105.2131°W. WGS 1984 Elev. 1822 m. Growing in afternoon shade of a small point of rocks, southeast exposure, more along the trail above.
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1321
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Field identification: Musineon divaricatum
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North Table Mountain Park, Jefferson County, Colorado. Southwest rim of North Table Mountain, 1.55 km north of the GNIS location of Golden. 39.7695°N, 105.2198°W. WGS 1984 Elev. 1973 m. Edges of cliffs.
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1322
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Field identification: Lomatium orientale
| Lomatium orientale J.M. Coult. & Rose. Northern Idaho Biscuitroot. North Table Mountain Park, Jefferson County, Colorado. Top of mesa, near southwest edge, 1.55 km north of the GNIS location of Golden. 39.7696°N, 105.2197°W. WGS 1984 Elev. 1975 m. Widespread on mesa-top lava flow derived soils and colluvial soils of upper and lower slopes.
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1323
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Field identification: Euphorbia myrsinites
| Lomatium orientale J.M. Coult. & Rose. Northern Idaho Biscuitroot. North Table Mountain Park, Jefferson County, Colorado. Top of mesa, near southwest edge, 1.55 km north of the GNIS location of Golden. 39.7696°N, 105.2197°W. WGS 1984 Elev. 1975 m. Widespread on mesa-top lava flow derived soils and colluvial soils of upper and lower slopes.
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1324
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Field identification: Thlaspi arvense
| Thlaspi arvense L. Field Penny Cress. North Table Mountain Park, Jefferson County, Colorado. Along a social trail above Peery Parkway, adjacent to running water from spring above on upper slopes of North Table Mountain, 1.26 km north northeast of the GNIS location of Golden. 39.7669°N, 105.22°W. WGS 1984 Elev. 1829 m. Coll. No. 1324, 4 May 2016, characters observed: Annual, tap-rooted, to 50 cm., generally glabrous throughout; Stem, single, or few-branched proximally; Leaves, basal and cauline, basal, withered at flowering, cauline, sessile, auriculate, oblong, 30 mm. × 5 mm. wide, reduced distally, toothed; Sepals, 2 mm.; Petals, 3 mm., white; Fruit, petiole 10 mm., ascending, fruit obovate, 10 mm. × 8 mm., wide, margin winged, tip deeply notched.
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Locations: Ranson/Edwards Homestead Open Space Park.
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| Thursday, May 5thRanson/Edwards Homestead Open Space Park, at the small segment toward the south end of the park.
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Literature Cited:
1325
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Field identification: Mertensia lanceolata.
| Mertensia lanceolata (Pursh) DC. Prairie Bluebells. Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Wet alluvial slope above Coal Creek, Stevens parcel immediately south of Ranson/Edwards parcel, 3.55 km west southwest of the GNIS location of Rocky Flats 39.8789°N, 105.2703°W. WGS 1984 Elev. 1959 m.
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1326
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Field identification: Lomatium orientale
| Lomatium orientale J.M. Coult. & Rose. Northern Idaho Biscuitroot. Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Stevens parcel just south of Ranson/Edwards parcel, about 180 m. northwest of the Plainview Road bridge over Coal Creek, 3.65 km west southwest of the GNIS location of Rocky Flats, 39.8792°N, 105.2717°W. WGS 1984 Elev. 1990 m. Gentle east-facing grassy slopes.
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1327
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Field identification: | Cerastium arvense L. ssp. strictum Gaudin. Field Chickweed. Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Stevens parcel immediately south of Ranson/Edwards parcel, 1.5 km south of the GNIS location of Plainvew, and 3.65 km south southwest of Rocky Flats. 39.8805°N, 105.2723°W. WGS 1984 Elev. 2013 m. East-facing grassy slopes. Common early-flowering perennial, to 20 cm.; Leaves, opposite, broadly linear, 15 mm. × 3 mm. wide, stipules absent, tufts of leaves in lower axils; Sepals free; Petals >>sepals, white, notched; Styles (4)5.
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1328
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Field identification: | Noccaea fendleri (A. Gray) Holub ssp. glauca (A. Nelson) Al-Shehbaz & M. Koch. Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Stevens parcel immediately south of Ranson/Edwards parcel, 1.5 km south of the GNIS location of Plainvew, 3.71 km west southwest of the GNIS location of Rocky Flats. 39.8806°N, 105.2731°W. WGS 1984. Elev. 2021 m. East-facing gentle slope. Few plants in the shade of ponderosa pine.
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1329
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Field identification: | Noccaea fendleri (A. Gray) Holub ssp. glauca (A. Nelson) Al-Shehbaz & M. Koch. Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Stevens parcel immediately south of Ranson/Edwards parcel, 1.64 km south southeast of the GNIS location of Plainview, 3.48 km west southwest of the GNIS location of Rocky Flats. 39.8797°N, 105.2699°W. WGS 1984. Elev. 1991 m. Common in shade of ponderosa pines among rocks; flat, disturbed area above Coal Creek, with much broken glass.
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Locations: Tucker Gulch (lower).
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| Wednesday, May 11thTucker Gulch in Golden, along the trail from First Street northward. There were a couple of things in the mustard family that were not ready to collect.
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1330
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Field identification: Chorispora tenella
| Chorispora tenella (Pall.) DC. Crossflower. Tucker Gulch (lower), Jefferson County, Colorado. Disturbed area between paths, 1.33 km north northwest of the GNIS location of Golden 39.7667°N, 105.227°W. WGS 1984 Elev. 1753 m. Small colony of this common early spring weed.
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Other articles:
1331
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Field identification: Euphorbia, not E. myrsinites
| Euphorbia esula L. Leafy Spurge. Tucker Gulch (lower), Jefferson County, Colorado. Disturbed area between paths, 1.33 km north northwest of the GNIS location of Golden 39.7666°N, 105.2272°W. WGS 1984 Elev. 1776 m. Weed: CO DofA, List: B.
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1332
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Field identification: Muscari botryoides
| Muscari botryoides (L.) Mill. Common Grape Hyacinth. Tucker Gulch (lower), Jefferson County, Colorado. Beside Tucker Gulch Trail, about 100 m. north of the First Street bridge, 1.42 km north northwest of the GNIS location of Golden 39.7674°N, 105.2273°W. WGS 1984 Elev. 1773 m. Naturalized.
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Other articles:
1333
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Field identification: Ranunculus sp.
| Ranunculus repens L. Creeping Buttercup. Tucker Gulch (lower), Jefferson County, Colorado. 135 m. north of First Street bridge, 1.46 km north northwest of the GNIS location of Golden 39.7677°N, 105.2275°W. WGS 1984 Elev. 1767 m. In a small slump beside creek. Coll. No. 1333, 11 May 2016, characters observed: Perennial herb, terrestrial of wet habitat, not alpine, appressed to spreading hairy throughout; Leaves, basal, petiole to 26 cm., 8 cm. × 10 cm. wide, ternately compound, divided once again, then lobed, cauline, distributed along stem, alternate, compound; Flowers, radially symmetric, Sepals, spreading (not reflexed), 9 mm., long straight hairy; Petals, #5, 16 mm. × 12 mm. wide, yellow, not spurred, nectary scale free ≥½ length; Pistils many; Style absent; Achenes, (immature) 1.5 mm., beak straight to slightly curved.
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1334
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Field identification: | Alopecurus arundinaceus Poir. Creeping Meadow Foxtail. Tucker Gulch (lower), Jefferson County, Colorado. 135 m. north of First Street bridge, 1.46 km north northwest of the GNIS location of Golden 39.7677°N, 105.2274°W. WGS 1984 Elev. 1766 m. Growing adjacent to running water in creek. Coll. No. 1334, 11 May 2016, characters observed: Perennial, to 90 cm., rhizomatous; Leaves, Sheath, open, 10 cm.; Ligule, membraneous, 2 mm.; Auricles, 0; Blade, flat, 10 cm., glabrous, finely scabrous on margins; Inflorescence, spike-like, 80 mm. × 12 mm. wide, contracted panicle of up to 4 branches, spikelets many; Rachis, glabrous; Compression, lateral; Spikelets, similar, 1 per node, 1-flowered; Florets, 1 per spikelet; Glumes, #2, 4.5 mm., ±equal, keeled ciliate, veins 3, awns 0, apex acute, apices divergent; Lemma, 4 mm., < glumes, membraneous, keeled, glabrous, veins parallel, apex truncate to obtuse, awns #1, 1-2 mm., straight, attached middle; Palea, absent; Stamens, #3.
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1335
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Field identification: Brassicaceae. | Not collected, no fruit.
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1336
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Field identification: Brassicaceae, Shepherd's Purse shaped fruit. Well, by golly … it's ...
| Capsella bursa-pastoris (L.) Medik. Shepherd's Purse. Tucker Gulch (lower), Jefferson County, Colorado. 230 m. north of the First Street bridge, 1.55 km north northwest of the GNIS location of Golden 39.7685°N, 105.228°W. WGS 1984 Elev. 1779 m. Common “weed” beside Tucker Gulch Trail. Coll. No. 1336, 11 May 2016, characters observed: Annual, scapose, to 27 cm., hairs, sessile, stellate, 3-4 points, throughout; Leaves, basal, oblanceolate, 55 mm. × 16 mm. wide, deeply lobed, but not all the way to mid-rib; cauline, 4-5 stem leaves, lanceolate, 25 mm. × 10 mm. wide, base sagittate; Flowers, small, petals white; Fruit, obcordate, 4 mm. × 3.5 mm. wide. The single species in this genus; described by some as the second-most common weed on Earth.
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1337
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Erigeron tracyi Greene. Running Fleabane. North Table Mountain Park, Jefferson County, Colorado. Lower south slopes of North Table Mountain, 100 m. east of the end of Peery Parkway, 1.2 km. north northeast of the GNIS location of Golden. 39.7659°N, 105.2179°W. WGS 1984 Elev. 1808 m. Signed as Jefferson County Open Space, parcel owned by City of Golden. Coll. No. 1337, 11 May 2016, characters observed: Perennial, caudex simple (not stout), Stem, some with prior year's branches assumed to have been stoloniferous; Leaves, petioles, to 26 mm., oblanceolate, 8-12 mm. × 2-5.5 mm. wide, margin entire, short hairy and glandular (especially visible at high magnification), stem leaves not well-developed; Peduncle, spreading to descending multicellular hairs with clear crosswalls, slightly pustular (maybe) or glandular at high magnification; Phyllaries, in 2+ series, 4.5 mm. × 0.7 mm wide, spreading hairy, inner, margin, chartaceous; Receptacle, epaleate; Flowers, of two kinds; Rays, numerous, 7 mm., ligule, 4 mm. × 0.3-0.6 mm. wide, white-pink fading purple; Disk flowers, yellow; Pappus, ray and disk alike, inner, few capillary bristles, 4 mm., outer, short crown of scales, double pappus not particularly disgnostic in Erigeron.
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1338
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Field identification: Populus deltoides.
| Populus deltoides Marshall ssp. monilifera (Aiton) Eckenw. Plains Cottonwood. North Table Mountain, Jefferson County, Colorado. South slopes of North Table Mountain, along the road to the Golden Cliffs overflow parking, 1.20 km north northeast of the GNIS location of Golden 39.7659°N, 105.2167°W. WGS 1984 Elev. 1802 m. Entrance to Jefferson County Open Space, parcel owned by City of Golden.
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| Thursday, May 12thCollected at North Table Mountain today. Went up by way of the social trail from Easley Road and the on-ramp to Colorado Highway 58. At the first stream, I turned north and went cross-country north towards Cottonwood Canyon. Followed an old road with a social or game trail down to the junction of North Table Loop and Neighborhood Access Trail.
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1339
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Field identification: Tragopogon dubius
| Tragopogon dubius Scop. Yellow Salsify. North Table Mountain Park, Jefferson County, Colorado. On a social trail from the intersection of Easley Road and CO Highway 58, west and upslope to North Table Loop, 1.9 km. northeast of the GNIS location of Golden. 39.7692°N, 105.2077°W. WGS 1984 Elev. 1800 m. Scattered widely along trail and grassy slopes above and below.
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1340
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Prunus virginiana L. Chokecherry. North Table Mountain Park, Jefferson County, Colorado. Southeast-draining canyon on the south side of North Table Mountain, 1.85 km. northeast of the GNIS location of Golden 39.7701°N, 105.2106°W. WGS 1984 Elev. 1841 m. Mixed shrubs and grass. FNANM distinguishes two varieties, an eastern var. virginia and a Rocky Mountains and west var. demissa (syn: var. melanocarpa) with plants of the high plains showing intergradation between those of the Rockies and those of the East. Based on measured characters used by FNANM of raceme length, petal length, and leaf shape and dimensions, this specimen is closer to var. virginiana, i. e., the eastern variety than it is to the western variety, i. e., var. demissa (syn: var. melanocarpa).
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1341
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Prunus domestica L. European Plum. North Table Mountain Park, Jefferson County, Colorado. Southeast-draining canyon on the south side of North Table Mountain, near intersection of social trail and North Table Loop, 1.85 km. northeast of the GNIS location of Golden 39.7701°N, 105.2106°W. WGS 1984 Elev. 1844 m. Mixed shrubs and grass in a ±flat area. Coll. No. 1341, 12 May 2016, characters observed; Small tree, to 3 m.; Stem, unarmed; Leaves, alternate, petiole, 3 mm., hairy, 2 glands at base, blade, likely immature, 20 mm. × 8 mm. wide, rhomboid / oblong / lanceolate, simple, bases equal, pinnately veined, margin toothed, hairy, but less on top than bottom; Pedicels, 8-10 mm., hairy below, thining above; Flowers, solitary in axils, perfect; Petals, free, white; Hypanthium, hairy inside; Ovary, superior; Style, 1; Stigma, 2; Fruit, unknown (not an acorn).
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1342
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Field identification: Erodium cicutarium
| Erodium cicutarium (L.) L'Her. ex Aiton. Redstem Stork's Bill. North Table Mountain Park, Jefferson County, Colorado. Southeast-draining canyon on the south side of North Table Mountain, near intersection of social trail and North Table Loop, 1.85 km. northeast of the GNIS location of Golden. 39.7702°N, 105.2104°W. WGS 1984 Elev. 1849 m. Colorado Noxious Weed List C.
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Other articles:
1343
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Field identification: a fern, maybe | Woodsia oregana D.C. Eaton. subsp. cathcartiana (B. L. Robinson) Windham North Table Mountain Park, Jefferson County, Colorado. Southeastern portion of North Table Mountain, near the North Table Loop, where it passes through the top basalt rim of the mountain, 1.8 km. north northeast of the GNIS location of Golden. 39.7713°N, 105.215°W. WGS 1984 Elev. 1928 m. Under an east-facing rock overhang. Of the three characters that distinguish subsp. cathcartiana from subsp. oregana, two, spore size and adaxial epidermal cell size, require measuring in units of µm, something outside the usual abilities of the field botanist. The third character, regarding the cells on pinnule margins being irregular in shape making the margins appear ragged, can be seen with a good microscope.
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