Taxon Report
Swallenia alexandrae (Swall.) Soderstrom & DeckerEureka Valley dune grass |
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Classification
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Scientific Name: |
Swallenia alexandrae (Swall.) Soderstrom & Decker |
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Common Name: |
Eureka Valley dune grass |
| Family: | Poaceae |
| Element Code: | PMPOA5Y010 |
| USDA Plants Symbol: | SWAL |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 850-1280 (2790-4200) |
| General Habitats: | Desert dunes |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | CR |
| Fed List: | FT |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 5 |
| Element Occurrence Ranks: | |
| Excellent (A) | 5 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Inyo (INY) | |
| Quads: Name (Quad Code) | |
| East of Joshua Flats (3711727), East of Waucoba Spring (3711717), Last Chance Range SW (3711716) | |
Threat List Data from the CNDDB
| Threat List Total: | 1 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 20 % | |
| ORV activity | 1 | 20% |
Notes
| Known only from dunes in Eureka Valley, within Death Valley NP. Habitat previously degraded by vehicle traffic; populations recovering well, but still threatened by vehicle trespass and recreation. See Journal of the Washington Academy of Sciences 40(1):19-21 (1950) for original description, Madroño 17(3):88 (1963) for revised nomenclature, and Biological Conservation 46:217-242 (1988) for population biology. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 28 December 2024].