Taxon Details

Streptanthus glandulosus ssp. hoffmanii

Hoffman's bristly jewelflower

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Taxon Summary:

Streptanthus glandulosus ssp. hoffmanii, commonly known as Hoffman's bristly jewelflower, is a annual herb in the Brassicaceae that is found only in California. It occurs within Chaparral, Cismontane woodland, and Valley and foothill grassland (often serpentinite), growing at elevations from 120 to 475 meters. Streptanthus glandulosus ssp. hoffmanii is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Streptanthus glandulosus Hook. ssp. hoffmanii (Kruckeb.) M.S. Mayer & D.W. Taylor
Common Name: Hoffman's bristly jewelflower
Family:	Brassicaceae
Element Code:	PDBRA2G0J4
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G4T2
State Rank:	S2
Other Status:	BLM_S; SB_UCSC
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: annual herb

Blooming Period: Mar-Jul

Elevation:
120 - 475 meters
395 - 1560 feet

General Habitats:

Chaparral
Cismontane woodland
Valley and foothill grassland (often serpentinite)

Microhabitat Details:

Microhabitat:

Rocky

Notes

Notes: Historical occurrences need field surveys. See S. glandulosus ssp. secundus in The Jepson Manual. See Madroño 14(7):223 (1958) for original description, and Systematic Botany 19(4):557-574 (1994) for discussion of S. glandulosus complex.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	3	19 %
Erosion/runoff	2	12%
Logging	1	6%
Road/trail construction/maint.	1	6%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					16
A	B	C	D	X	U
2	2	2	0	0	10

Occurrence Status:
Historical >20 Years	7
Recent <=20 Years	9

Presence:
Presumed Extant	16
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Lake (LAK), Mendocino (MEN), Sonoma (SON)

Quads: Name (Quad Code)
Arched Rock (3812342), Cazadero (3812351), Cold Spring (3912315), Cow Mountain (3912321), Duncans Mills (3812341), Fort Ross (3812352), Hopland (3812381), Jimtown (3812267), Mallo Pass Creek (3912316), The Geysers (3812277), Tombs Creek (3812362), Warm Springs Dam (3812361), Yorkville (3812382)

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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CNPS Rare Plant Inventory