CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record sidalcea_robusta - Sat, Dec. 4, 2021, 09:08 ET b
Sidalcea robusta
common nameButte County checkerbloom
CalPhotos image
more photos
© 2002 Kristiaan Stuart  Follow image link for photo data.
life form rhizomatous herb
CA Rare Plant Rank
List 1B.2
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.2: Fairly endangered in California
state rank
S2      ranking system key
global rank
G2     G2: 6-20 occurrences OR 1,000-3,000 individuals OR 2,000-10,000 acres
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (6):
Cherokee (576A) 3912165, Hamlin Canyon (576B) 3912166, Chico (577A) 3912167, Cohasset (592B) 3912186, Paradise West (592C) 3912176, Richardson Springs (593D) 3912177
quad data info

Counties, states, regions:
Butte (BUT)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)
•Cismontane woodland (CmWld)
blooming period Apr-Jun  
elevation range90 - 1600 meters
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.
full nameSidalcea robusta Roush
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  SIRO2 Element Code  PDMAL110P0
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Sat, Dec. 4, 2021 from

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