Species Details

Streptanthus batrachopus

Tamalpais jewelflower

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Photo of Streptanthus batrachopus
© 2012 Aaron Schusteff
Photo of Streptanthus batrachopus
© 2012 Aaron Schusteff
Photo of Streptanthus batrachopus
© 2015 Vernon Smith
Scientific Name:
Streptanthus batrachopus Morrison
Common Name:
Tamalpais jewelflower
Family: Brassicaceae
Element Code: PDBRA2G050
USDA Plants Symbol: STBA4
Synonyms/Other Names:
Lifeform: annual herb
Blooming Period: Apr-Jul
JFMAMJJASOND
Elevation:
305 - 650 meters
1000 - 2135 feet
General Habitats:
  • Closed-cone coniferous forest
  • Chaparral
Microhabitat Details:
Microhabitat:
  • Serpentine
Notes:
Known from fewer than ten occurrences in the Mt. Tamalpais area. Similar plants from the southern North Coast Ranges may be an undescribed new taxon. Intergrades with S. barbiger.
Threats:
Taxonomy:
Threat List Total: 3
Total EOs % of EOs
EOs with Threat Listed: 3 38 %
THREAT LIST:
Foot traffic/trampling 3 37%
Other 1 12%
Recreational use (non-ORV) 1 12%
Total Occurrences: 8
Element Occurrence Ranks:
A B C D X U
1 2 2 0 0 3
Occurrence Status:
Historical >20 Years 5
Recent <=20 Years 3
Presence:
Presumed Extant 8
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Marin (MRN)
Quads: Name (Quad Code)
Bolinas (3712286), San Geronimo (3812216), San Rafael (3712285)
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.
Presumed Extant
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