Sidalcea oregana ssp. eximia
Common Name: coast checkerbloom
Family: Malvaceae
Element Code: PDMAL110K9
Full Name: Sidalcea oregana (T. & G.) Gray ssp. eximia (Greene) Hitchc.

Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 19
  • Element Occurrence Ranks:
    A B C D X U
    0 1 5 1 0 12
  • Population Status:
    >20 yrs
    <=20 yrs
    8 11
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    19 0 0
Notes Glossary
  • Known from approximately ten occurrences. Possibly threatened by trampling. Intergrades with sspp. oregana and spicata. See University of Washington Publications in Biology 18:1-96 (1957) for taxonomic treatment.
  • 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: 2011-04-01
Location Glossary
  • Elevation: 5 - 1340 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Del Norte (DNT),  Humboldt (HUM),  Siskiyou (SIS),  Trinity (TRI)
  • Quads:   name (DWR code) USGS code
    Hyampom (651C) 40123E4,  Board Camp Mtn. (652B) 40123F6,  Mad River Buttes (653A) 40123F7,  Iaqua Buttes (653B) 40123F8,  Fields Landing (654B) 40124F2,  Cannibal Island (655A) 40124F3,  Grouse Mtn. (670C) 40123G6,  Lord-ellis Summit (671A) 40123H7,  Korbel (671C) 40123G8,  Maple Creek (671D) 40123G7,  Arcata North (672A) 40124H1,  Salmon Mtn. (686B) 41123B4,  Trinity Mtn. (686C) 41123A4,  Hopkins Butte (687A) 41123B5,  Weitchpec (687B) 41123B6,  Tish Tang Point (687D) 41123A5,  Panther Creek (688C) 41123A8,  McConaughy Gulch (701A) 41122D7,  Smith River (740B) 41124H2,  Crescent City (740C) 41124G2
  • 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 1779
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 ].

40123E4=Hyampom (651C) 40123E4;40123F6=Board Camp Mtn. (652B) 40123F6;40123F7=Mad River Buttes (653A) 40123F7;40123F8=Iaqua Buttes (653B) 40123F8;40124F2=Fields Landing (654B) 40124F2;40124F3=Cannibal Island (655A) 40124F3;40123G6=Grouse Mtn. (670C) 40123G6;40123H7=Lord-ellis Summit (671A) 40123H7;40123G8=Korbel (671C) 40123G8;40123G7=Maple Creek (671D) 40123G7;40124H1=Arcata North (672A) 40124H1;41123B4=Salmon Mtn. (686B) 41123B4;41123A4=Trinity Mtn. (686C) 41123A4;41123B5=Hopkins Butte (687A) 41123B5;41123B6=Weitchpec (687B) 41123B6;41123A5=Tish Tang Point (687D) 41123A5;41123A8=Panther Creek (688C) 41123A8;41122D7=McConaughy Gulch (701A) 41122D7;41124H2=Smith River (740B) 41124H2;41124G2=Crescent City (740C) 41124G2