Sidalcea robusta
Common Name: Butte County checkerbloom
Family: Malvaceae
Element Code: PDMAL110P0
Full Name: Sidalcea robusta Roush

2010 George W. Hartwell
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 34
  • Element Occurrence Ranks:
    A B C D X U
    3 5 1 0 1 24
  • Population Status:
    >20 yrs
    <=20 yrs
    20 14
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    33 1 0
Notes Glossary
  • Known from approximately twenty occurrences. Threatened by non-native plants. Possibly threatened by residential development and fire suppression. See Annals of the Missouri Botanical Garden 18:205-207 (1931) for original description.
  • 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: 90 - 1600 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Butte (BUT)
  • Quads:   name (DWR code) USGS code
    Cherokee (576A) 39121F5,  Hamlin Canyon (576B) 39121F6,  Chico (577A) 39121F7,  Cohasset (592B) 39121H6,  Paradise West (592C) 39121G6,  Richardson Springs (593D) 39121G7
  • 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 1125
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 ].

39121F5=Cherokee (576A) 39121F5;39121F6=Hamlin Canyon (576B) 39121F6;39121F7=Chico (577A) 39121F7;39121H6=Cohasset (592B) 39121H6;39121G6=Paradise West (592C) 39121G6;39121G7=Richardson Springs (593D) 39121G7