Species Details

Streptanthus glandulosus ssp. niger

Tiburon jewelflower

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Scientific Name:
Streptanthus glandulosus Hook. ssp. niger (Greene) Al-Shehbaz et al.
Common Name:
Tiburon jewelflower
Family: Brassicaceae
Element Code: PDBRA2G0T0
USDA Plants Symbol:
Synonyms/Other Names:
CA Rare Plant Rank: 1B.1
Fed List: FE (1995-02-03)
State List: CE (1990-02-01)
Global Rank: G4T1
State Rank:
S1
Other Status: SB_CalBG/RSABG; SB_UCBG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-05-26
Lifeform: annual herb
Blooming Period: May-Jun
Elevation:
30 - 150 meters
100 - 490 feet
General Habitat:
  • Valley and foothill grassland (serpentinite)
General Micro Habitat:
Micro Habitat:
Notes:
Known from only two occurrences on the Tiburon Peninsula. Threatened by road construction, trampling, foot traffic, non-native plants, and development. See Bulletin of the Torrey Botanical Club 13:141 (1886) for original description, MadroƱo 14(7):217-227 (1958) for taxonomic treatment, and Systematic Botany 19(4):557-574 (1994) for discussion of S. glandulosus complex.
Threats:
Taxonomy:
Other:
Total Occurrences: 2
Element Occurrence Ranks:
A B C D X U
0 2 0 0 0 0
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 2
Presence:
Presumed Extant 2
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)
San Quentin (3712284)
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.

Map

Presumed Extant
Counties   Quads