CNPS Inventory Plant Detail

Streptanthus brachiatus ssp. brachiatus

Common Name:	Socrates Mine jewel-flower
Family:	Brassicaceae
Synonyms:
Element Code:	PDBRA2G072
Full Name:	Streptanthus brachiatus F.W. Hoffm. ssp. brachiatus
USDA PLANTS Symbol:	STBRB

Biology
Lifeform: perennial herb Blooming Period: May - June Habitat: usually serpentinite. • Closed-cone coniferous forest • Chaparral

Rarity Status
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: S1 S1: Critically Imperiled. Global Rank: G2T1 T1: Critically Imperiled. G2: (species) Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Historic >20 yrs	Recent <=20 yrs
7	1

Presence:

Present Extant	Possibly Extirpated	Extirpated
8	0	0

Notes

In review. Known from fewer than ten occurrences. Plants from LAK Co. (517B, 533C) are more appropriately assigned to S. brachiatus ssp. hoffmanii. Possibly threatened by alteration of fire regimes. See Madroño 36(1):36 (1989) for revised nomenclature.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1980-01-01
Last Update: 2011-11-18

Location

Elevation: 545 - 1000 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Napa (NAP), Sonoma (SON)

Quads: name (DWR code) USGS code
Detert Reservoir (517A) 38122F5, The Geysers (534D) 38122G7

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

1493

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

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society. Sacramento, CA. Accessed on .

-122.5,38.625