Species Details

Astragalus pseudiodanthus

Tonopah milk-vetch

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Scientific Name:
Astragalus pseudiodanthus Barneby
Common Name:
Tonopah milk-vetch
Family: Fabaceae
Element Code: PDFAB0F750
USDA Plants Symbol: ASPS
Synonyms/Other Names:
Lifeform: perennial herb
Blooming Period: May-Jun
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Elevation:
2025 - 2075 meters
6645 - 6810 feet
General Habitats:
  • Great Basin scrub (stabilized dunes)
Microhabitat Details:
Microhabitat:
Notes:
Known in CA from fewer than ten occurrences. Threatened by grazing. See Leaflets of Western Botany 3:99 (1942) for original description, and Systematic Botany 8:422 (1983) for alternate taxonomic treatment as A. iodanthus var. pseudiodanthus.
Threats:
Taxonomy:
Threat List Total: 2
Total EOs % of EOs
EOs with Threat Listed: 7 88 %
THREAT LIST:
Grazing 7 87%
Road/trail construction/maint. 1 12%
Total Occurrences: 8
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 8
Occurrence Status:
Historical >20 Years 7
Recent <=20 Years 1
Presence:
Presumed Extant 8
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA), Nevada (NV)
California Counties and Islands: Name (Code)
Mono (MNO)
Quads: Name (Quad Code)
Alameda Well (3811817), Cedar Hill (3811827), Kirkwood Spring (3811828)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant
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