CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record sidalcea_calycosa_ssp._rhizomata - Thu, Dec. 12, 2019 12:05 ET c
Sidalcea calycosa ssp. rhizomata
common namePoint Reyes checkerbloom
CalPhotos image
more photos
Doreen L. Smith © 1993 Doreen L. Smith  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
G5T2      ranking system key
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (11):
San Rafael (467A) 3712285, Petaluma (484B) 3812226, Tomales (485B) 3812228, Drakes Bay (485C) 3812218, Inverness (485D) 3812217, Valley Ford (502C) 3812238, Duncans Mills (503A) 3812341, Stewarts Point (520B) 3812364, Saunders Reef (537C) 3812376, Elk (552B) 3912326, Albion (553A) 3912327
quad data info

Counties, states, regions:
Mendocino (MEN), Marin (MRN), Sonoma (SON)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Marshes and swamps (MshSw)(freshwater, near coast)
blooming period Apr-Sep  
elevation range3 - 75 meters
Threatened by non-native plants, road maintenance, foot traffic, and pipeline construction. See Manual of the Flowering Plants of California, p. 629 (1925) by W.L. Jepson for original description.
full nameSidalcea calycosa Jones ssp. rhizomata (Jeps.) Munz
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  SICAR Element Code  PDMAL11012
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 Thu, Dec. 12, 2019 from

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