Chaenactis carphoclinia var. peirsonii
Common Name: Peirson's pincushion
Family: Asteraceae
Element Code: PDAST20042
Full Name: Chaenactis carphoclinia Gray var. peirsonii (Jeps.) Munz

Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 12
  • Element Occurrence Ranks:
    A B C D X U
    0 3 0 0 0 9
  • Population Status:
    >20 yrs
    <=20 yrs
    4 8
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    12 0 0
Notes Glossary
  • Known only from the eastern Santa Rosa Mtns, where known from few collections. Possibly threatened by vehicles. Does plant occur in RIV Co.? See Madroño 1(17):259 (1929) for original description, and Manual of Southern California Botany, p. 567 (1935) by P. Munz for revised nomenclature.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1994-01-01
  • Last Update: 2012-09-18
Location Glossary
  • Elevation: 3 - 500 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Imperial (IMP),  Riverside (RIV) ?,  San Diego (SDG)
  • Quads:   name (DWR code) USGS code
    Shell Reef (031A) 33116B1,  Borrego Mountain (031B) 33116B2,  Borrego Mountain SE (031D) 33116A1,  Borrego Sink (032A) 33116B3,  Seventeen Palms (046D) 33116C1,  Clark Lake (047D) 33116C3
  • 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 1616
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 [accessed ].

33116B1=Shell Reef (031A) 33116B1;33116B2=Borrego Mountain (031B) 33116B2;33116A1=Borrego Mountain SE (031D) 33116A1;33116B3=Borrego Sink (032A) 33116B3;33116C1=Seventeen Palms (046D) 33116C1;33116C3=Clark Lake (047D) 33116C3