Cirsium occidentale var. compactum
Common Name: compact cobwebby thistle
Family: Asteraceae
Synonyms:
Element Code: PDAST2E1Z1
Full Name: Cirsium occidentale (Nutt.) Jeps. var. compactum Hoov.
USDA PLANTS Symbol: CIOCC2

© 2004 Robert E. Preston, Ph.D.
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 14
  • Element Occurrence Ranks:
    A B C D X U
    0 2 3 1 1 7
  • Population Status:
    Historic
    >20 yrs
    Recent
    <=20 yrs
    10 4
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    13 1 0
Notes Glossary
  • Known from fewer than twenty occurrences. Threatened by grazing and insect predation, and potentially by road construction and development. Some inland plants weakly separated from var. occidentale. Compact, low-growing plants from MNT Co. (344C) are probably not var. compactum.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1974-01-01
  • Last Update: 2010-03-15
Location Glossary
  • Elevation: 5 - 150 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Monterey (MNT) ?,  San Francisco (SFO) *,  San Luis Obispo (SLO)
  • Quads:   name (DWR code) USGS code
    Cayucos (247B) 35120D8,  San Simeon (271B) 35121F2,  Pico Creek (271C) 35121E2,  Cambria (271D) 35121E1,  Piedras Blancas (272A) 35121F3,  Point Sur (344C)? 36121C8,  San Francisco South (448B)* 37122F4
  • Notes:
      Definitions of codes preceding a county and/or quad:
      * Presumed extirpated
      ? Uncertain about distribution or identity
      ?* Uncertain about distribution, but presumed extirpated if once present
      (?) Occurrence confirmed, but possibly extirpated
      Species may be present in other areas where conditions are favorable.
Presumed Extant Presumed Extirpated or Unknown 488
Links to Leading Resources of Taxon Information
Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website http://www.rareplants.cnps.org [accessed ].
-120.875,35.375

CA
35120D8=Cayucos (247B) 35120D8;35121F2=San Simeon (271B) 35121F2;35121E2=Pico Creek (271C) 35121E2;35121E1=Cambria (271D) 35121E1;35121F3=Piedras Blancas (272A) 35121F3;36121C8=Point Sur (344C)? 36121C8;37122F4=San Francisco South (448B)* 37122F4