Species Details
Astragalus johannis-howellii
Long Valley milk-vetch
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Species Description:
Astragalus johannis-howellii, commonly known as Long Valley milk-vetch, is a perennial herb in the Fabaceae that is found in California and elsewhere. It occurs within Great Basin scrub, growing at elevations from 2040 to 2530 meters. Astragalus johannis-howellii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Astragalus johannis-howellii Barneby |
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Common Name: Long Valley milk-vetch |
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| Family: | Fabaceae | |
| Element Code: | PDFAB0F4H0 | |
| USDA Plants Symbol: | ASJO | |
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Synonyms/Other Names: |
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| Name Status: |
JEP, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | CR (1982-07-01) |
| Global Rank: | G2 |
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State Rank: |
S1 |
| Other Status: | BLM_S; SB_SBBG; USFS_S |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: Jun-Aug
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Elevation:
2040 - 2530 meters 6695 - 8300 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Threatened by grazing, vehicles, and mining. Possibly threatened by trampling and illegal dumping. Usually found in swales in vicinity of former or present hot springs activity. See Leaflets of Western Botany 8(5):124-125 (1957) for original description, and Memoirs of the New York Botanical Garden 13:467-468 (1964) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 10 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 14 | 74 % |
| THREAT LIST: | ||
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| Grazing | 12 | 63% |
| ORV activity | 4 | 21% |
| Dam/Inundation | 3 | 15% |
| Foot traffic/trampling | 2 | 10% |
| Road/trail construction/maint. | 2 | 10% |
| Vandalism/dumping/litter | 1 | 5% |
| Other | 1 | 5% |
| Recreational use (non-ORV) | 1 | 5% |
| Mining | 1 | 5% |
| Non-native plant impacts | 1 | 5% |
| Total Occurrences: | 19 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 1 | 5 | 0 | 1 | 0 | 12 |
| Occurrence Status: | |||||
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| Historical >20 Years | 12 | ||||
| Recent <=20 Years | 7 | ||||
| Presence: | |||||
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| Presumed Extant | 19 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA), Nevada (NV) |
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California Counties and Islands: Name (Code) Mono (MNO) |
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Quads: Name (Quad Code) Aurora (3811838), Convict Lake (3711857), Dome Hill (3811931), Toms Place (3711856), Watterson Canyon (3711866), West of Huntoon Spring (3811816), Whitmore Hot Springs (3711867) |
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Notes:
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Presumed Extant
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