Species Details

Astragalus pulsiferae var. suksdorfii

Suksdorf's milk-vetch

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Photo of Astragalus pulsiferae var. suksdorfii

Image by Anthony Baniaga

Classification

Scientific Name: Astragalus pulsiferae Gray var. suksdorfii (Howell) Barneby
Common Name: Suksdorf's milk-vetch
Family:	Fabaceae
Element Code:	PDFAB0F782
USDA Plants Symbol:	ASPUS
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G4T2
State Rank:	S2
Other Status:	BLM_S; SB_UCSC; USFS_S
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2023-05-02

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Aug

Elevation:
1300 - 2000 meters
4265 - 6560 feet

General Habitats:

Great Basin scrub
Lower montane coniferous forest
Pinyon and juniper woodland

Microhabitat Details:

Microhabitat:

Gravelly
Rocky
Volcanic

Notes

Notes:
Threats: Threatened by grazing, road widening, mining, competition, and timber harvest activities; potentially threatened by vehicles and development. State-listed as Endangered in WA.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	10
	Total EOs	% of EOs
EOs with Threat Listed:	20	80 %
Grazing	11	44%
Road/trail construction/maint.	11	44%
ORV activity	5	20%
Foot traffic/trampling	4	16%
Logging	4	16%
Other	3	12%
Wood cutting or brush clearing	3	12%
Development	1	4%
Mining	1	4%
Non-native plant impacts	1	4%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					25
A	B	C	D	X	U
8	11	3	0	0	3

Occurrence Status:
Historical >20 Years	4
Recent <=20 Years	21

Presence:
Presumed Extant	25
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Washington (WA)

California Counties and Islands: Name (Code)
Lassen (LAS), Plumas (PLU), Shasta (SHA)

Quads: Name (Quad Code)
Almanor (4012122), Antelope Mtn. (4012058), Bogard Buttes (4012152), Chester (4012132), Manzanita Lake (4012155), Pine Creek Valley (4012151), Poison Lake (4012162), Stover Mtn. (4012133), Swains Hole (4012163), Thousand Lakes Valley (4012165)

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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Selected References

Original Description:	Erythea 1:111 (1893)
Taxonomic Treatment:	Memoirs of the New York Botanical Garden 13:968-971 (1964)
Taxonomic Treatment:	Rhodora 104(919):271-279 (2002)
Species Account:	Astragalus pulsiferae var. suksdorfii profile for potential Species of Conservation Concern evaluation (2017)