Swallenia
| Swallenia | |
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| File:Swallenia alexandrae.jpeg | |
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Eureka Valley dune grass |
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Swallenia
Soderstr. & H.F.Decker
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| Species: |
S. alexandrae
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| Binomial name | |
| Swallenia alexandrae |
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Swallenia is a rare genus of plants in the grass family, found only in Death Valley National Park, California.[1][2]
The only known species is Swallenia alexandrae, known by the common names Eureka dunegrass[3] and Eureka Valley dune grass. This genus was named for American botanist Jason Richard Swallen (1903-1991).
Description
This is a rare plant endemic to Inyo County, California, where it is found on a single isolated dune system, the Eureka Valley Sand Dunes in the Eureka Valley of the Mojave Desert, within Death Valley National Park.[4][5]
Description
Swallenia alexandrae is a coarse, tufted perennial grass which grows in sand from thick rhizomes. Its stiffly erect clums, sharp-leafed grass, and erect pale-colored panicle inflorescences are diagnostic.[6]
Endangered status
This is a federally listed endangered species of the United States, and an IUCN listed Critically endangered species.[7] The main threat to the species survival has been off-roading, which is no longer permitted in its habitat. Trespassing off-roaders and campers are still a threat to the five remaining occurrences.[8]
References
- ↑ Soderstrom, Thomas Robert & Decker, Henry Fleming. 1963. Madroño 17(3): 88
- ↑ Swallen, Jason Richard. 1950. Journal of the Washington Academy of Sciences 40(1): 19-21 descriptions in parallel English + Latin, discussion in English, photo of herbarium specimen
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Biota of North America Program 2013 county distribution map
- ↑ University of British Columbia Botanical Garden and Centre for Plant Research, Botany Photo of the Day, Swallenia alexandrae, By Daniel Mosquin on December 7, 2007
- ↑ Jepson Manual Treatment
- ↑ Plant Conservation Report
- ↑ The Nature Conservancy
External links
- Calflora Database: Swallenia alexandrae (Eureka Valley dune grass, Eureka dunegrass)
- Jepson Manual treatment for Swallenia alexandrae
- Grass Manual Profile
- Swallenia alexandrae — UC Photos gallery
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- Pages with broken file links
- NatureServe critically imperiled species
- Chloridoideae
- Monotypic Poaceae genera
- Native grasses of California
- Endemic flora of California
- Flora of the California desert regions
- Natural history of the Mojave Desert
- Natural history of Inyo County, California
- Death Valley National Park
- Critically endangered flora of California
- IUCN Red List critically endangered species
- Chloridoideae stubs
