Species Details
Swallenia alexandrae
Eureka Valley dune grass
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Scientific Name: Swallenia alexandrae (Swall.) Soderstrom & Decker |
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Common Name: Eureka Valley dune grass |
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| Family: | Poaceae | |
| Element Code: | PMPOA5Y010 | |
| USDA Plants Symbol: | SWAL | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | FT (2018-03-29) |
| State List: | CR (1981-08-01) |
| Global Rank: | G2 |
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State Rank: |
S2 |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2023-05-02 |
| Lifeform: perennial rhizomatous herb | ||||||||||||||
Blooming Period: Apr-Jun
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Elevation:
850 - 1280 meters 2790 - 4200 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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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: |
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| Threat List Total: | 1 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 1 | 20 % |
| THREAT LIST: | ||
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| ORV activity | 1 | 20% |
| Total Occurrences: | 5 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 5 | 0 | 0 | 0 | 0 | 0 |
| Occurrence Status: | |||||
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| Historical >20 Years | 0 | ||||
| Recent <=20 Years | 5 | ||||
| Presence: | |||||
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| Presumed Extant | 5 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Inyo (INY) |
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Quads: Name (Quad Code) East of Joshua Flats (3711727), East of Waucoba Spring (3711717), Last Chance Range SW (3711716) |
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Notes:
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Presumed Extant
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