Taxon Report

Streptanthus batrachopus Morrison

Tamalpais jewelflower

Print Report


© 2012 Aaron Schusteff

  Classification
Scientific Name:
 Streptanthus batrachopus Morrison
Common Name:
 Tamalpais jewelflower
Family: Brassicaceae
Element Code: PDBRA2G050
USDA Plants Symbol: STBA4
Synonyms/Other Names:

Ecology and Life History
Lifeform: annual herb
Blooming Period: Apr-Jul Apr-Jul
Elevation: 305-650 (1000-2135)
General Habitats: Chaparral, Closed-cone coniferous forest
Microhabitat: Serpentine
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.3
Global Rank: G2
State Rank:
 S2
State List: None
Fed List: None
Other Status: SB_UCSC
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 8
Element Occurrence Ranks:
   Excellent (A) 1
   Good (B) 2
   Fair (C) 2
   Poor (D) 0
   None (X) 0
   Unknown (U) 3

Location
California Endemic:  True
California Counties and Islands: Name (Code)
Marin (MRN)
Quads: Name (Quad Code)
Bolinas (3712286), San Geronimo (3812216), San Rafael (3712285)

Threat List Data from the CNDDB

Threat List Total: 3
EOs with Threat Listed: Total EOs % of EOs
3 38 %
Foot traffic/trampling 3 37%
Other 1 12%
Recreational use (non-ORV) 1 12%

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:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 December 2024].