Taxon Details

Astragalus jaegerianus

Lane Mountain milk-vetch

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Taxon Summary:

Astragalus jaegerianus, commonly known as Lane Mountain milk-vetch, is a perennial herb in the Fabaceae that is found only in California. It occurs within Joshua tree "woodland", and Mojavean desert scrub, growing at elevations from 900 to 1200 meters. Astragalus jaegerianus is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Astragalus jaegerianus Munz
Common Name: Lane Mountain milk-vetch
Family:	Fabaceae
Element Code:	PDFAB0F4F0
USDA Plants Symbol:	ASJA
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	FE (1998-10-06)
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-08-25

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Apr-Jun

Elevation:
900 - 1200 meters
2955 - 3935 feet

General Habitats:

Joshua tree "woodland"
Mojavean desert scrub

Microhabitat Details:

Microhabitat:

Granitic
Gravelly (sometimes)
Sandy (sometimes)

Notes

Notes: Known only from small fragmented populations within and adjacent to Ft. Irwin (DOD); where threatened by mining, vehicles, and military activities. Also threatened by prolonged drought. See Leaflets of Western Botany 3:49-80 (1941) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	8
	Total EOs	% of EOs
EOs with Threat Listed:	22	100 %
Other	22	100%
ORV activity	17	77%
Mining	15	68%
Non-native plant impacts	9	40%
Recreational use (non-ORV)	9	40%
Vandalism/dumping/litter	9	40%
Military operations	7	31%
Development	4	18%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					22
A	B	C	D	X	U
0	3	2	1	0	16

Occurrence Status:
Historical >20 Years	16
Recent <=20 Years	6

Presence:
Presumed Extant	22
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Bernardino (SBD)

Quads: Name (Quad Code)
East of Goldstone (3511637), Goldstone (3511638), Lane Mountain (3511618), Mud Hills (3511711), Paradise Range (3511627), Williams Well (3511628)

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