Sidalcea gigantea
Common Name: giant checkerbloom
Family: Malvaceae
Element Code: PDMAL110T0
Full Name: Sidalcea gigantea G.L. Clifton, R.E. Buck & S.R. Hill

2011 Sierra Pacific Industries
Biology Glossary
  • Lifeform: perennial rhizomatous herb
  • Blooming Period: (Jan-Jun)Jul-Oct
  • Habitat: Meadows and seeps.
    • Lower montane coniferous forest
    • Upper montane coniferous forest
Rarity Status Glossary
Occurrence Data from CDFW
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences:
  • Element Occurrence Ranks:
    A B C D X U
  • Population Status:
    >20 yrs
    <=20 yrs
  • Presence:
    Present Extant Possibly Extirpated Presumed Extirpated
Notes Glossary
  • Potentially threatened by fire suppression. Possibly threatened by logging, road construction, and road maintenance. Similar to S. asprella and S. celata. See American Journal of Botany 90(3):436-444 (2003) and Molecular Phylogenetics and Evolution 29:563-581 (2003) for taxonomic treatments, and MadroƱo 56(4):285-292 (2009) 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: 2012-07-10
  • Last Update: 2012-07-25
Location Glossary
  • Elevation: 670 - 1950 meters
  • California Endemic: yes
  • Other States:
  • California Counties and Islands:   name (code)
    Butte (BUT),  Nevada (NEV),  Plumas (PLU),  Shasta (SHA),  Sierra (SIE),  Tehama (TEH),  Yuba (YUB)
  • Quads:   name (DWR code) USGS code
    Grass Valley (542A) 3912121,  North Bloomfield (557C) 3912038,  Goodyears Bar (573C) 3912058,  American House (574A) 3912161,  Cascade (574B) 3912162,  Clipper Mills (574C) 3912152,  Strawberry Valley (574D) 3912151,  Berry Creek (575B) 3912164,  Haskins Valley (590C) 3912172,  Storrie (591A) 3912183,  Kimshew Point (591B) 3912184,  Pulga (591C) 3912174,  Soapstone Hill (591D) 3912173,  Stirling City (592A) 3912185,  Paradise East (592D) 3912175,  Lassen Peak (626A) 4012145,  Grays Peak (626B) 4012146,  Mineral (626D) 4012135,  Viola (644C) 4012156,  Inwood (645C) 4012158,  Burney (662B) 4012186,  Hatchet Mtn. Pass (663D) 4012177
  • 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. This data should NOT be substituted for pre-project review or for on-site surveys.
Includes unprocessed quads for CRPR 3 and 4 plants; unprocessed location data has not been quality controlled and may contain errors.
Presumed Extant Presumed Extirpated or Unknown 3670
Links to Leading Resources of Taxon Information
Suggested Citation
California Native Plant Society, Rare Plant Program. . Inventory of Rare and Endangered Plants of California (online edition, v8-03). Website [accessed ].

3912121=Grass Valley (542A) 3912121;3912038=North Bloomfield (557C) 3912038;3912058=Goodyears Bar (573C) 3912058;3912161=American House (574A) 3912161;3912162=Cascade (574B) 3912162;3912152=Clipper Mills (574C) 3912152;3912151=Strawberry Valley (574D) 3912151;3912164=Berry Creek (575B) 3912164;3912172=Haskins Valley (590C) 3912172;3912183=Storrie (591A) 3912183;3912184=Kimshew Point (591B) 3912184;3912174=Pulga (591C) 3912174;3912173=Soapstone Hill (591D) 3912173;3912185=Stirling City (592A) 3912185;3912175=Paradise East (592D) 3912175;4012145=Lassen Peak (626A) 4012145;4012146=Grays Peak (626B) 4012146;4012135=Mineral (626D) 4012135;4012156=Viola (644C) 4012156;4012158=Inwood (645C) 4012158;4012186=Burney (662B) 4012186;4012177=Hatchet Mtn. Pass (663D) 4012177