Species Details
Astragalus tener var. tener
alkali milk-vetch
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Scientific Name: Astragalus tener Gray var. tener |
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Common Name: alkali milk-vetch |
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| Family: | Fabaceae | |
| Element Code: | PDFAB0F8R1 | |
| USDA Plants Symbol: | ASTET2 | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2T1 |
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State Rank: |
S1 |
| Other Status: | SB_UCSC |
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CRPR Changes: |
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| Add Date: | 1994-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: Mar-Jun
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Elevation:
1 - 60 meters 5 - 195 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Threatened by development, competition from non-native plants, and habitat destruction, especially agricultural conversion. Possibly threatened by trampling. Potentially threatened by energy transmission line construction. See Proceedings of the American Academy of Arts and Sciences 6:206 (1864) for original description, and Systematic Botany 17(3):367-379 (1992) for distributional information. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 12 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 35 | 54 % |
| THREAT LIST: | ||
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| Grazing | 17 | 26% |
| Development | 12 | 18% |
| Non-native plant impacts | 7 | 10% |
| Agriculture | 6 | 9% |
| Biocides | 2 | 3% |
| Disking | 2 | 3% |
| Foot traffic/trampling | 2 | 3% |
| Improper burning regime | 2 | 3% |
| Other | 2 | 3% |
| Surface water diversion | 1 | 1% |
| Landfill | 1 | 1% |
| ORV activity | 1 | 1% |
| Total Occurrences: | 65 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 1 | 27 | 1 | 2 | 28 | 6 |
| Occurrence Status: | |||||
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| Historical >20 Years | 57 | ||||
| Recent <=20 Years | 8 | ||||
| Presence: | |||||
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| Presumed Extant | 37 | ||||
| Possibly Extirpated | 18 | ||||
| Presumed Extirpated | 10 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Alameda (ALA), Contra Costa (CCA)*, Merced (MER), Monterey (MNT)*, Napa (NAP), San Benito (SBT)*, San Francisco (SFO)*, San Joaquin (SJQ)*, Santa Clara (SCL)*, Solano (SOL), Sonoma (SON)*, Stanislaus (STA)*, Yolo (YOL) |
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Quads: Name (Quad Code) Altamont (3712166), Antioch North (3812117), Arena (3712036), Byron Hot Springs (3712176)*, Clifton Court Forebay (3712175)*, Crows Landing (3712141)*, Cuttings Wharf (3812223), Davis (3812156)*, Denverton (3812128), Dixon (3812147)*, Dozier (3812137), Elmira (3812138), Fairfield North (3812231)*, Fairfield South (3812221), Grays Bend (3812166), Gustine (3712038), Hayward (3712261)*, Hollister (3612174)*, Honker Bay (3812118), Milpitas (3712148), Mountain View (3712241)*, Napa (3812233)*, Natividad (3612165), Newark (3712251)*, Oakland East (3712272)*, Oakland West (3712273)*, Petaluma (3812226)*, Petaluma River (3812225), Richmond (3712283)*, Salinas (3612166)*, San Francisco North (3712274)*, San Francisco South (3712264), San Leandro (3712262)*, San Luis Ranch (3712027), Saxon (3812146), Stevinson (3712037), Stockton West (3712183)*, Woodward Island (3712185) |
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Notes:
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Presumed Extant
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