CNPS Inventory Plant Detail

Astragalus tener var. tener

Common Name:	alkali milk-vetch
Family:	Fabaceae
Synonyms:
Element Code:	PDFAB0F8R1
Full Name:	Astragalus tener Gray var. tener
USDA PLANTS Symbol:	ASTET2

Biology
Lifeform: annual herb Blooming Period: March - June Habitat: alkaline. • Playas • Valley and foothill grassland (adobe clay) • Vernal pools

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2 S2: Imperiled. Global Rank: G2T2 T2: Imperiled. G2: (species) Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 65
Element Occurrence Ranks:

A B C D X U

1 25 2 3 28 6

Population Status:

Historic >20 yrs	Recent <=20 yrs
35	30

Presence:

Present Extant	Possibly Extirpated	Extirpated
37	18	10

Notes

Threatened by development, competition from non-native plants, and habitat destruction, especially agricultural conversion. Possibly threatened by trampling. Potentially threatened by energy transmission line construction. See Proceedings of the American Academy of Arts and Sciences 6:206 (1864) for original description, and Systematic Botany 17(3):367-379 (1992) for distributional information.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1994-01-01
Last Update: 2010-03-15

Location

Elevation: 1 - 60 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Alameda (ALA), Contra Costa (CCA) *, Merced (MER), Monterey (MNT) *, Napa (NAP), San Benito (SBT) *, Santa Clara (SCL) *, San Francisco (SFO) *, San Joaquin (SJQ) *, Solano (SOL), Sonoma (SON) *, Stanislaus (STA) *, Yolo (YOL)

Quads: name (DWR code) USGS code
Salinas (365B)* 36121F6, Hollister (385C)* 36121G4, San Luis Ranch (403A) 37120B7, Arena (422C) 37120C6, Gustine (423C) 37120C8, Stevinson (423D) 37120C7, Crows Landing (424A)* 37121D1, Milpitas (427B) 37121D8, Mountain View (428A)* 37122D1, Altamont (445B) 37121F6, Hayward (447A)* 37122F1, San Leandro (447B)* 37122F2, Newark (447D)* 37122E1, San Francisco South (448B)* 37122F4, Stockton West (462A)* 37121H3, Woodward Island (463A) 37121H5, Byron Hot Springs (463C)* 37121G6, Clifton Court Forebay (463D)* 37121G5, Oakland East (465C)* 37122G2, Richmond (466A)* 37122H3, San Francisco North (466C)* 37122G4, Oakland West (466D)* 37122G3, Denverton (481B) 38121B8, Antioch North (481D) 38121A7, Fairfield South (482A) 38122B1, Cuttings Wharf (483A) 38122B3, Petaluma River (484A)* 38122B5, Petaluma (484B)* 38122B6, Saxon (497B) 38121D6, Dixon (498A)* 38121D7, Elmira (498C) 38121C8, Dozier (498D) 38121C7, Fairfield North (499D)* 38122C1, Napa (500D)* 38122C3, Grays Bend (513B) 38121F6, Davis (513C)* 38121E6

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

1129

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-121.625,37.75