Taxon Details

Astragalus argophyllus var. argophyllus

silver-leaved milk-vetch

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Photo of Astragalus argophyllus var. argophyllus

Taxon Summary:

Astragalus argophyllus var. argophyllus, commonly known as silver-leaved milk-vetch, is a perennial herb in the Fabaceae that is found in California and elsewhere. It occurs within Meadows and seeps, and Playas, growing at elevations from 1240 to 2350 meters. Astragalus argophyllus var. argophyllus is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Astragalus argophyllus T. & G. var. argophyllus
Common Name: silver-leaved milk-vetch
Family:	Fabaceae
Element Code:	PDFAB0F0S1
USDA Plants Symbol:	ASARA
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G5T4
State Rank:	S2
Other Status:	BLM_S
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2023-11-08

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Jul

Elevation:
1240 - 2350 meters
4070 - 7710 feet

General Habitats:

Meadows and seeps
Playas

Microhabitat Details: Sometimes saline

Microhabitat:

Alkaline (sometimes)

Notes

Notes: See Memoirs of the New York Botanical Garden 13:626-628 (1964) for revised nomenclature.
Threats: Threatened by grazing and trampling; BLM will fence both LAS Co. occurrences.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	8
	Total EOs	% of EOs
EOs with Threat Listed:	8	89 %
Grazing	6	66%
ORV activity	4	44%
Other	1	11%
Road/trail construction/maint.	1	11%
Vandalism/dumping/litter	1	11%
Groundwater pumping	1	11%
Non-native plant impacts	1	11%
Development	1	11%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					9
A	B	C	D	X	U
0	6	1	1	0	1

Occurrence Status:
Historical >20 Years	8
Recent <=20 Years	1

Presence:
Presumed Extant	9
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Arizona (AZ), California (CA), Idaho (ID), Montana (MT), Nevada (NV), Utah (UT), Wyoming (WY)

California Counties and Islands: Name (Code)
Inyo (INY), Lassen (LAS), Mono (MNO)

Quads: Name (Quad Code)
Smoke Creek Ranch (4011958), Cherry Mtn. (4012051), Chidago Canyon (3711854), Fish Slough (3711844), Laws (3711843)

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.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory