Eastern Mojave Vegetation
Tom Schweich
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Eastern Mojave Vegetation
| Field Notes (Continued) |
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Tom Schweich |
Topics in this Article: 1800s 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 1991 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 2010s 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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2008
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| 3 April 2008
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Other articles:
Locations:
Bloody Canyon.
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At the UC/JEPS Herbaria, I looked at the Chesnut and Drew collection determined as Abronia fragrans Nutt., made July 18, 1889. While most of Chesnut and Drew's collections were made in Bloody Canyon or at the foot of Bloody Canyon, the location of this collection is merely "near Mono Lake." Regardless of the location, the collection is unusual because the taxon, Abronia fragrams is not found in California, and is therefore likely misidentified. This collection certainly looks to me as A. turbinata. It has small ovoid leaves and the bracts are quite small. This voucher also has a small hand-written annotation of "A. turbinata," so at least one other person has the same opinion. Therefore, I have listed this collection as A. turbinata in my Mono Lake checklist flora.
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Just out of interest, I found collections of A. fragrans from: Arizona, Colorado, Idaho, New Mexico, Texas, Utah including Zion National Park, and Wyoming.
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Locations:
Saint George.
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There are no collections from Nevada or California. The closest collection to California is a Marcus E. Jones collection, No. 5906, made at Saint George, Utah, April 26, 1894.
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Locations: Milford.
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In Utah, the closest collection of A. fragrans to California was made east of Milford, Utah, by P. A. Rydberg and E. C. Carlton, No. 6272, on June 22, 1905.
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Looking through the North American collections, Abronia turbinata has been collected near Weiser, Idaho, and in the Alvord Desert and Harney County of Oregon.
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In northern Nevada, A. turbinata has been collected in Churchill, Humboldt, Pershing, Storey and Washoe counties.
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Locations: Candelaria. Pinyon Hill. Sand Spring. Tonopah.
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Closer to Mono Lake, the closest locations in Esmeralda County are 10 miles northwest of Tonopah, 2.3 miles NE of Sand Spring in Fish Lake Valley, and north of Pinyon Hill at 2000 m elevation (White Mtns, Collector: Duran). There is one collection from Candelaria in Mineral County. There are collections from Nye County at Tonopah, and 10 miles south of Beatty.
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Locations: Spring Mountains.
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In Clark County, there are numerous collections from the Spring Mountains (Cottonwood Springs, Vic Wilson's Ranch, and south of Red Rocks), and a single collection from Jean, Nevada.
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There is a single Marcus E. Jones collection from Salt Lake City, Utah, and there are also collections from Dona Ana County, New Mexico, and El Paso, Texas.
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Locations: Darwin.
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The collection at UC also includes an undetermined Abronia: UC128940, was collected by H. M. Hall and H. P. Chandler No 7166, 10 miles north of Darwin, May 24, 1906. This looks very much like A. turbinata.
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| April 17, 2008
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Locations:
Pine Tree Canyon.
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In February, I received a query about Pine Tree Canyon from Cliff, wanting directions into and out of Pine Tree Canyon. I wasn't able to help because I had never visited Pine Tree Canyon. The canyon was listed on my web site only because of a collection of Salvia dorrii there.
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Other articles:
Locations:
Fremont Valley.
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On my way to Zzyzx, I detoured slightly to check out Pine Tree Canyon.
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Other articles:
Locations:
Pine Tree Canyon.
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The lower canyon is open to the public. It seems to be a popular OHV location and there are many camp sites and OHV trails. The upper portion of the canyon is apparently private property, and there is a locked gate with a "No Trespassing" sign.
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Other articles:
Locations:
Pine Tree Canyon.
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This "locked gate" is fairly low in Pine Tree Canyon. Even though it was open when I was there, I did not go through, as I assumed it was unlocked only for the construction workers.
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Literature Cited:
Other articles:
Locations: Pine Tree Canyon.
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 Coll. No. 531, Caulanthus cooperi
 Coll. No. 531, Caulanthus cooperi sp. From Pine Canyon California.
 Coll. No. 531, Caulanthus cooperi
531
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| Caulanthus cooperi (S. Watson) Payson. Cooper's Wild Cabbage. Pine Tree Canyon, Kern County, California. Small canyon on north side of Pine Tree Canyon, 17 miles by California Highway 14 northeast from Mojave, then 2.3 miles west on Pine Tree Canyon Road, and 0.4 miles north on the aqueduct service road. 35.2399°N, 118.0882°W. WGS1984 Elev. 857 m. Coll. No. 531, 17 April 2008, characters observed: Annual, tap-rooted, 40-50 cm.; Stem, not inflated. Hairs, mostly basal, simple; Leaves, basal and cauline, cauline leaves lobed at base, lance-linear; Corollas, purple or violet, petals, 12 mm.; Stamens 6, 4 short and 2 long, included; Filaments of longer pair of stamens fused; Anthers on 2 longer stamens are much smaller; Ovary linear; Fruit, linear, 70 mm., >6 ovules, reflexed; Seeds, oblong, 2 mm. × 1 mm. wide.
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Other articles:
Locations:
Jawbone Canyon.
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| April 19, 2008
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Literature Cited:
Other articles:
Locations: Amboy. Bristol Lake.
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Other articles:
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 Bouse Formation near Amboy
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 Lawlor Tuff (Sonoma Volcanics) in the Bouse Formation
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Locations:
Cadiz Valley.
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Other articles:
Locations:
Cadiz Dunes.
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Literature Cited:
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Locations:
Ship Mountains.
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| April 20, 2008
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Locations:
Mule Mountains.
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Literature Cited:
Locations:
Mule Mountains.
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Locations:
Mule Mountains.
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Literature Cited:
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Literature Cited:
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Locations:
Trigo Mountains.
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Locations:
Ben Hulse Monument.
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California Highway 78, north of Ben Hulse Monument.
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California Highway 78, south of Ben Hulse Monument.
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Literature Cited:
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Other articles:
Locations:
Sonny Bono Salton Sea National Wildlife Refuge.
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Other articles:
Locations:
Sonny Bono Salton Sea National Wildlife Refuge.
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Other articles:
Locations:
Sonny Bono Salton Sea National Wildlife Refuge.
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Other articles:
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Literature Cited:
Other articles:
Locations: Obsidian Butte. Red Island. Rock Hill.
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Water-, mud-, gas-, and petroleum-bearing seeps are part of the
Salton Sea geothermal system (SSGS) in Southern California. Seeps
in the Davis-Schrimpf seep fi eld (~14,000 m2) show considerable variations
in water temperature, pH, density, and solute content. Water-rich
springs have low densities (<1.4 g/cm3), Cl contents as high as 45,000
ppm, and temperatures between 15 and 34 °C. Gryphons expel denser
water-mud mixtures (to 1.7 g/cm3), have low salinities (3600–5200
ppm Cl), and have temperatures between 23 and 63 °C. The main
driver for the seep system is CO2 (>98 vol%). Halogen geochemistry of
the waters indicates that mixing of deep and shallow waters occurs and
that near-surface dissolution of halite may overprint the original fl uid
compositions. Carbon isotopic analyses suggest that hydrocarbon seep
gases have a thermogenic origin. This hypothesis is supported by the
presence of petroleum in a water-dominated spring, composed of 53%
saturated compounds, 35% aromatics, and 12% polar compounds. The
abundance of polyaromatic hydrocarbons and immature biomarkers
suggests a hydrothermal formation of the petroleum, making the SSGS
a relevant analogue to less accessible hydrothermal seep systems, e.g.,
the Guaymas Basin in the Gulf of California (Svensen, et al., 2007, authors' abstract).
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| April 21, 2008
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Other articles:
Locations:
Fish Creek Campground.
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The Fish Creek Gypsum is present at the base of the Imperial Group. It interfingers with the top of the Elephant Trees Conglomerate at its base and is laterally equivalent to the fossiliferous near-shore Latrania Formation. It has been interpreted as a sabkah-like deposit, but largely lacks calcite, and otherwise has a distinctive metallic trace element signal of a geothermal vent. The gypsum is 90% pure, over 30 m thick, and has been mined since the 1920s.
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Dorsey, et al., 2007 provide a the most recent stratigraphic column for the Vallecito Creek / Fish Creek stratigraphic section.
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Literature Cited:
Other articles:
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 Fagonia laevis in Fish Creek.
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 Axis of drag fold
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 Wind Caves in sandstone above Fish Creek
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 Ocotillo on Borrego Springs Road
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| April 22, 2008
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Other articles:
Locations:
Cottonwood Spring.
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Other articles:
Locations:
Cottonwood Spring.
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Other articles:
Locations:
Pinto Basin.
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Other articles:
Locations:
Pinto Basin.
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Other articles:
Locations:
Turkey Flat.
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Other articles:
Locations:
Turkey Flat.
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Other articles:
Locations:
Silver Bell Mine.
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Other articles:
Locations:
Silver Bell Mine.
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Other articles:
Locations:
Sheep Hole Mountains.
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Other articles:
Locations:
Sheep Hole Pass.
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Literature Cited:
Other articles:
Locations: Bristol Lake.
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