Taxon Report

Astragalus pseudiodanthus Barneby

Tonopah milk-vetch

Print Report

Classification


Scientific Name:	Astragalus pseudiodanthus Barneby
Common Name:	Tonopah milk-vetch
Family:	Fabaceae
Element Code:	PDFAB0F750
USDA Plants Symbol:	ASPS
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Jun	May-Jun
Elevation:	2025-2075 (6645-6810)
General Habitats:	Great Basin scrub
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G2Q
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG; SB_SBBG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	8
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	8

Location


California Endemic: False
California Counties and Islands: Name (Code)
Mono (MNO)
Quads: Name (Quad Code)
Alameda Well (3811817), Cedar Hill (3811827), Kirkwood Spring (3811828)

Threat List Data from the CNDDB


Threat List Total:	2
EOs with Threat Listed:	Total EOs	% of EOs
	7	88 %
Grazing	7	87%
Road/trail construction/maint.	1	12%

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:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 6 January 2025].