Streptanthus howellii

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Scientific Name: Streptanthus howellii Wats.
Common Name: Howell's jewelflower
Family:	Brassicaceae
Element Code:	PDBRA2G0N0
USDA Plants Symbol:	STHO
Synonyms/Other Names:

Lifeform: perennial herb

Blooming Period: Jul-Aug

Elevation:
305 - 1500 meters
1000 - 4920 feet

General Habitats:

Microhabitat Details:

Microhabitat:

Notes: Threatened by mining. Candidate for state listing in OR. See Proceedings of the American Academy of Arts and Sciences 20:353 (1885) for original description.
Threats:
Taxonomy:

THREAT LIST:
Threat List Total:	5
	Total EOs	% of EOs
EOs with Threat Listed:	14	47 %
Road/trail construction/maint.	10	33%
Mining	9	30%
Improper burning regime	4	13%
Other	2	6%
Wood cutting or brush clearing	1	3%

Occurrence Status:
Historical >20 Years	14
Recent <=20 Years	16

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR)

California Counties and Islands: Name (Code)
Del Norte (DNT)

Quads: Name (Quad Code)
Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Shelly Creek Ridge (4112387)

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

Presumed Extant

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Other:

USFS Potential Species of Conservation Concern Profile