Species Details

Cirsium fontinale var. campylon

Mt. Hamilton thistle

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Scientific Name:
Cirsium fontinale Greene var. campylon (H.K. Sharsm.) Keil & C. Turner
Common Name:
Mt. Hamilton thistle
Family: Asteraceae
Element Code: PDAST2E163
USDA Plants Symbol: CIFOC
Synonyms/Other Names:
Lifeform: perennial herb
Blooming Period: (Feb)Apr-Oct
Elevation:
100 - 890 meters
330 - 2920 feet
General Habitat:
  • Chaparral
  • Cismontane woodland
  • Valley and foothill grassland
General Micro Habitat: serpentinite seeps
Micro Habitat:
Notes:
Threatened by urbanization, trampling, non-native plants, and grazing. Possibly threatened by recreational activities, and erosion. See Phytologia 73(4):312-317 (1992) for revised nomenclature.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 36
Element Occurrence Ranks:
A B C D X U
6 17 4 0 0 9
Occurrence Status:
Historical >20 Years 13
Recent <=20 Years 23
Presence:
Presumed Extant 36
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Alameda (ALA), Santa Clara (SCL), Stanislaus (STA)
Quads: Name (Quad Code)
Cedar Mtn. (3712155), Lick Observatory (3712136), Los Gatos (3712128), Morgan Hill (3712126), Mt. Boardman (3712144), Mt. Madonna (3712116), San Jose East (3712137), Santa Teresa Hills (3712127)
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