Taxon Report

Astragalus oophorus Wats. var. oophorus

egg milk-vetch

Print Report

Taxon Summary

Astragalus oophorus var. oophorus, commonly known as egg milk-vetch, is a perennial herb in the Fabaceae that is found in California and elsewhere. It occurs within Great Basin scrub, Pinyon and juniper woodland, and Subalpine coniferous forest, growing at elevations from 1500 to 3170 meters. Astragalus oophorus var. oophorus is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Astragalus oophorus Wats. var. oophorus
Common Name:	egg milk-vetch
Family:	Fabaceae
Element Code:	PDFAB0F6C6
USDA Plants Symbol:	ASOOO2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Jul	May-Jul
Elevation:	1500-3170 (4920-10400)
General Habitats:	Great Basin scrub, Pinyon and juniper woodland, Subalpine coniferous forest
Microhabitat:	Gravelly (sometimes), Sandy (sometimes)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G4T4?
State Rank:	S3S4
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: False
California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO)
Quads: Name (Quad Code)
Blanco Mtn. (3711842), Crooked Creek (3711841), Emigrant Pass (3611732), Mazourka Peak (3611881), Mt. Barcroft (3711852), Panamint (3611711), Telescope Peak (3611721), Watterson Canyon (3711866), Waucoba Spring (3711718), Wildrose Peak (3611731)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



See Botany of the King Exploration, p. 73 (1871) for original description.
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 14 November 2025].