CPC Plant Profile: Fountain Thistle
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Plant Profile

Fountain Thistle (Cirsium fontinale var. fontinale)

Description
  • Global Rank: T1 - Critically Imperiled
  • Legal Status: Federally Endangered
  • Family: Asteraceae
  • State: CA
  • Nature Serve ID: 147464
  • Date Inducted in National Collection: 09/18/2021

Participating Institutions
Updates
  • 09/01/2020
  • Orthodox Seed Banking

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 3 accessions of Cirsium fontinale var. fontinale in orthodox seed collection. There are as many as 4315 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

  • 01/01/2010

destruction of habitat from urbanization, alteration of local hydrology, dam construction in the 19th century, and highway construction

  • 01/01/2010

found in only three locations in San Mateo County. One population occurs east of Crystal Springs Reservoir on both sides of I-280. A second population occurs in the ""Triangle"" area west of Edgewood Co. Park. The third location is in Edgewood Co. Park

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Photos
Nomenclature
Taxon Cirsium fontinale var. fontinale
Authority (Greene) Jeps.
Family Asteraceae
CPC Number 953
ITIS 527370
USDA CIFOF
Common Names Fountain Thistle
Associated Scientific Names Cirsium fontinale var. fontinale | Cirsium fontinale
Distribution NA
State Rank
State State Rank
California S1
Habitat

restricted to perpetually moist clay openings in riparian or serpentine chaparral between approximately 300 to 600 ft.

Ecological Relationships

Pollinators
Common Name Name in Text Association Type Source InteractionID

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