Taxon Report

Astragalus pulsiferae Gray var. coronensis Welsh, Ondricek, & Clifton

Modoc Plateau milk-vetch

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Taxon Summary

Astragalus pulsiferae var. coronensis, commonly known as Modoc Plateau milk-vetch, is a perennial herb in the Fabaceae that is found in California and elsewhere. It occurs within Great Basin scrub, Lower montane coniferous forest, and Pinyon and juniper woodland, growing at elevations from 1345 to 1890 meters. Astragalus pulsiferae var. coronensis is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

Classification


Scientific Name:	Astragalus pulsiferae Gray var. coronensis Welsh, Ondricek, & Clifton
Common Name:	Modoc Plateau milk-vetch
Family:	Fabaceae
Element Code:	PDFAB0F784
USDA Plants Symbol:	ASPUC5
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: (Apr)May-Jul	(Apr)May-Jul
Elevation:	1345-1890 (4415-6200)
General Habitats:	Great Basin scrub, Lower montane coniferous forest, Pinyon and juniper woodland
Microhabitat:	Gravelly, Sandy, Volcanic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G4T3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	USFS_S
CRPR Changes:	added to 4 on 2005-08-30

Occurrence Data from the CNDDB


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

Location


California Endemic: False
California Counties and Islands: Name (Code)
Lassen (LAS), Modoc (MOD), Plumas (PLU), Shasta (SHA)
Quads: Name (Quad Code)
Adin (4112028), Adin Pass (4112038), Alturas (4112045), Ambrose Valley (4112027), Cherry Mtn. (4012051), Crocker Mtn. (3912084), Dodge Reservoir (4012082), Infernal Caverns (4112035), Jess Valley (4112023), Lane Reservoir (4112017), Likely (4112025), Observation Peak (4012072), Petes Valley (4012054), Rattlesnake Butte (4112046), Shaffer Mtn. (4012043), Shinn Mtn. (4012062), Snowstorm Mtn. (4012063), Squaw Valley Peak (4012014), Susanville (4012046), Thousand Lakes Valley (4012165), Troxel Point (4012066), Tunnison Mtn. (4012055), Waterman Mtn. (3411738), West of Snowstorm Mtn. (4012064)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Can be locally common. Potentially threatened by grazing, trampling, development, and timber harvest activities. Considered critically imperiled in NV. Not in TJM (1993). See Rhodora 104(919):276 (2002) for original description.
Threats:

Taxonomy:

Selected References

Proposed Addition to CRPR 4 (2005)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].