Taxon Report

Astragalus mohavensis Wats. var. hemigyrus (Clokey) Barneby

curved-pod milk-vetch

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Taxon Summary

Astragalus mohavensis var. hemigyrus, commonly known as curved-pod milk-vetch, is a annual herb in the Fabaceae that is found in California and elsewhere. It occurs within Joshua tree "woodland", and Mojavean desert scrub, growing at elevations from 1250 to 1620 meters. Astragalus mohavensis var. hemigyrus is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Astragalus mohavensis Wats. var. hemigyrus (Clokey) Barneby
Common Name:	curved-pod milk-vetch
Family:	Fabaceae
Element Code:	PDFAB0F5J1
USDA Plants Symbol:	ASMOH
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	1250-1620 (4100-5315)
General Habitats:	Joshua tree "woodland", Mojavean desert scrub
Microhabitat:	Carbonate
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G3G4T2T3
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:	changed from 1A to 1B.1 on 2010-07-29

Occurrence Data from the CNDDB


Total Occurrences:	2
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	1
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	1

Location


California Endemic: False
California Counties and Islands: Name (Code)
Inyo (INY)
Quads: Name (Quad Code)
Darwin (3611735), Talc City Hills (3611736)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	1	50 %
Mining	1	50%

Notes



Formerly on List 1A; rediscovered in 2001 and verified in 2009. Potentially threatened by mining. See Madroño 6(7):220 (1942) for original description, Aliso 2:207 (1950) for revised nomenclature, and Memoirs of the New York Botanical Garden 13:1025 (1964) for taxonomic treatment.
Threats:

Taxonomy:

Selected References

Proposed Rank Change from List 1A to List 1B.1 (2010)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].