Taxon Details

Astragalus claranus

Clara Hunt's milk-vetch

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Taxon Summary:

Astragalus claranus, commonly known as Clara Hunt's milk-vetch, is a annual herb in the Fabaceae that is found only in California. It occurs within Chaparral (openings), Cismontane woodland, and Valley and foothill grassland, growing at elevations from 75 to 275 meters. Astragalus claranus is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Astragalus claranus Jeps.
Common Name: Clara Hunt's milk-vetch
Family:	Fabaceae
Element Code:	PDFAB0F240
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	FE (1997-10-22)
State List:	CE (2021-12-06)
Global Rank:	G1
State Rank:	S1
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2023-05-02

Ecology and Life History

Lifeform: annual herb

Blooming Period: Mar-May

Elevation:
75 - 275 meters
245 - 900 feet

General Habitats:

Chaparral (openings)
Cismontane woodland
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Clay
Rocky
Serpentine (sometimes)
Volcanic (sometimes)

Notes

Notes: Threatened by urbanization, recreational development, grazing, and non-native plants. See Manual of the Flowering Plants of California, p. 578 (1925) by W.L. Jepson for original description, and Systematic Botany 17(3):367-379 (1992) for distributional information.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	12
	Total EOs	% of EOs
EOs with Threat Listed:	6	100 %
Non-native plant impacts	4	66%
Foot traffic/trampling	2	33%
Grazing	2	33%
Other	2	33%
Recreational use (non-ORV)	2	33%
Road/trail construction/maint.	1	16%
Surface water diversion	1	16%
Vandalism/dumping/litter	1	16%
Agriculture	1	16%
Development	1	16%
Feral pigs	1	16%
ORV activity	1	16%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					6
A	B	C	D	X	U
0	3	2	0	0	1

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	6

Presence:
Presumed Extant	6
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Napa (NAP), Sonoma (SON)

Quads: Name (Quad Code)
Calistoga (3812255), Mark West Springs (3812256), Rutherford (3812244), Santa Rosa (3812246), St. Helena (3812254)

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