Species Details

Astragalus sabulonum

gravel milk-vetch

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Classification

Scientific Name: Astragalus sabulonum A. Gray
Common Name: gravel milk-vetch
Family:	Fabaceae
Element Code:	PDFAB0F7R0
USDA Plants Symbol:	ASSA2
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G4G5
State Rank:	S2
Other Status:
CRPR Changes: changed from 2.2 to 2B.2 on 2013-06-12 added to 2.2 on 2011-10-19
Add Date:	2011-10-19
Date Edited:	2023-05-02

Ecology and Life History

Lifeform: annual/perennial herb

Blooming Period: Feb-Jun

Elevation:
-60 - 930 meters
-195 - 3050 feet

General Habitats:

Desert dunes
Mojavean desert scrub
Sonoran desert scrub

Microhabitat Details:

Microhabitat:

Flats
Gravelly (sometimes)
Roadsides
Sandy (usually)
Washes

Notes

Notes: Threatened by solar energy development. Possibly threatened by vehicles, recreational activities, and non-native plants. See Proceedings of the American Academy of Arts and Sciences 13:361-374 (1878) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	5
	Total EOs	% of EOs
EOs with Threat Listed:	8	42 %
Development	5	26%
Non-native plant impacts	5	26%
ORV activity	2	10%
Recreational use (non-ORV)	1	5%
Agriculture	1	5%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					19
A	B	C	D	X	U
2	1	3	0	1	12

Occurrence Status:
Historical >20 Years	12
Recent <=20 Years	7

Presence:
Presumed Extant	18
Possibly Extirpated	0
Presumed Extirpated	1

Location

California Endemic:

California Island:

States: Name (Code)
Arizona (AZ), California (CA), Nevada (NV), New Mexico (NM), Sonora, Mexico (SO), Utah (UT)

California Counties and Islands: Name (Code)
Imperial (IMP), Inyo (INY), Riverside (RIV), San Diego (SDG)

Quads: Name (Quad Code)
Borrego Palm Canyon (3311634), Borrego Sink (3311623), Calexico (3211564), Calvada Springs (3511588), Clark Lake (3311633), Harpers Well (3311518), Heber (3211565), Hopkins Well (3311458), Indio (3311662), Kane Spring (3311517), Kane Spring NE (3311527), Last Chance Range SW (3711716), Mecca (3311651)*, Mortmar (3311558), Mound Spring (3611518), Mount Signal (3211566), Niland (3311525), Roosevelt Mine (3311457), Stump Spring, Nev. (3511587), The Dunes (3611744), Tubb Canyon (3311624), Wister (3311535), Yuha Basin (3211567)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

Selected References

CNPS Status Review:

Proposed New Add to CRPR 2.2, G5 / S2