Home/Species/ Susanville Milkvetch

Astragalus inversus

M.E. Jones

Susanville Milkvetch

G4Apparently Secure Found in 1 roadless area NatureServe Explorer →

G4Apparently SecureGlobal Rank

MediumThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.159220

Element CodePDFAB0F4A0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderFabales

FamilyFabaceae

GenusAstragalus

Concept Reference

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Conservation Status

Rank MethodLegacy Rank calculation - Excel v3.1x

Review Date2014-10-01

Change Date2014-10-01

Edition Date2014-10-01

Edition AuthorsOliver, L., rev. R. Bittman (2014)

Threat ImpactMedium

Range Extent20,000-200,000 square km (about 8000-80,000 square miles)

Number of Occurrences81 - 300

Rank Reasons

Astragalus inversus is endemic to California and is known from Lassen, Modoc, Shasta, and Siskiyou counties (CNPS 2001). While it is considered rare by the California Native Plant Society, they report that it occurs in sufficient enough numbers and is distributed widely enough that it is not currently under threat of extinction (2001). The CNPS also does not consider it very endangered as of 2001. A. inversus occurs in Great Basin scrub, lower montane coniferous forest and pinyon and juniper woodland, in disturbed areas between 95 and 1800 meters in elevation (CNPS 2001). Possible threats include vehicles, grazing, logging, improper fire regime, and pipeline construction.

Range Extent Comments

Endemic to northeastern California and known from the Cascade Range and Modoc Plateau (CNPS 2017).

Occurrences Comments

There are 186 unprocessed sources in CNDDB (2014), and 57 Consortium of California Herbaria records (2014).

Threat Impact Comments

Threats include vehicles, grazing, logging, improper fire regime, and pipeline construction (CNDDB 2014, CNPS 2017).

Ecology & Habitat

Other Nations (1)

United StatesN4

Province	Rank	Native
California	S4	Yes

Threat Assessments

Threat	Scope	Severity	Timing
2 - Agriculture & aquaculture	—	—	—
2.3 - Livestock farming & ranching	—	—	—
4 - Transportation & service corridors	—	—	—
4.1 - Roads & railroads	—	—	—
4.2 - Utility & service lines	—	—	—
5 - Biological resource use	—	—	—
5.3 - Logging & wood harvesting	—	—	—
7 - Natural system modifications	—	—	—
7.1 - Fire & fire suppression	—	—	—

Plant Characteristics

Economic Value (Genus)Yes

Roadless Areas (1)

California (1)

Area	Forest	Acres
Cypress	Lassen National Forest	3,380

References (4)

California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
California Native Plant Society (CNPS). 2017. Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Online. Available: http://www.rareplants.cnps.org (accessed 2017).
California Natural Diversity Database (CNDDB). 2014. RareFind Version 5. California Department of Fish and Game, Sacramento.
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Astragalus inversus

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