CNPS

CNPS Rare Plant Inventory

Species Details

Cirsium andrewsii

Franciscan thistle

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  Classification

Scientific Name:
Cirsium andrewsii (Gray) Jeps.
Common Name:
Franciscan thistle
Family: Asteraceae
Element Code: PDAST2E050
USDA Plants Symbol: CIAN2
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G3
State Rank:
 S3
Other Status: SB_CalBG/RSABG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2022-12-06

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Mar-Jul
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Elevation:
0 - 150 meters
0 - 490 feet
General Habitats:
  • Broadleafed upland forest
  • Coastal bluff scrub
  • Coastal prairie
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Mesic
  • Serpentinite (sometimes)

  Notes

Notes:
Threatened by development and non-native plants. See Proceedings of the American Academy of Arts and Sciences 10:45 (1874) for original description, and A Flora of Western Middle California , p. 506 (1901) by W. L. Jepson for revised nomenclature.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 5
Total EOs % of EOs
EOs with Threat Listed: 12 39 %
THREAT LIST:
Non-native plant impacts 9 29%
Grazing 3 9%
Erosion/runoff 2 6%
Foot traffic/trampling 1 3%
Other 1 3%

  Occurrence Data from the CNDDB

Total Occurrences: 31
Element Occurrence Ranks:
A B C D X U
3 11 3 0 3 11
Occurrence Status:
Historical >20 Years 23
Recent <=20 Years 8
Presence:
Presumed Extant 28
Possibly Extirpated 3
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Contra Costa (CCA), Marin (MRN), San Francisco (SFO), San Mateo (SMT), Sonoma (SON)(?)
Quads: Name (Quad Code)
Ano Nuevo (3712213), Bodega Head (3812331)(?), Briones Valley (3712282), Drakes Bay (3812218), Franklin Point (3712223)*, Inverness (3812217), Montara Mountain (3712254), Point Bonita (3712275), Point Reyes NE (3812227), San Francisco North (3712274), San Francisco South (3712264), Tomales (3812228), Valley Ford (3812238)
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.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2023. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 29 November 2023].