Taxon Report

Astragalus jaegerianus Munz

Lane Mountain milk-vetch

Print Report

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:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	900-1200 (2955-3935)
General Habitats:	Joshua tree "woodland", Mojavean desert scrub
Microhabitat:	Granitic, Gravelly (sometimes), Sandy (sometimes)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G2
State Rank:	S2
State List:	None
Fed List:	FE
Other Status:	SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	22
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	3
Fair (C)	2
Poor (D)	1
None (X)	0
Unknown (U)	16

Location


California Endemic: True
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)

Threat List Data from the CNDDB


Threat List Total:	8
EOs with Threat Listed:	Total EOs	% of EOs
	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%

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:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 February 2025].