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Taxon  Report  
Sidalcea calycosa  M. E. Jones  ssp. rhizomata  (Jeps.) Munz
Point reyes checkerbloom,   Pt. reyes checkerbloom,   Pt. reyes sidalcea
Sidalcea calycosa ssp. rhizomata is a perennial herb (rhizomatous) that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
~69 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
DJJJASONAFMM

Bloom Period
Parent: Sidalcea calycosa
Genus: Sidalcea
Family: Malvaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Wetlands: Occurs in wetlands

Habitat: freshwater-marsh

Communities: Coastal Salt Marsh, wetland-riparian

Name Status:
Accepted by JEF + CNPS + PLANTS
Alternate Names:
JEF + PLANTSSidalcea rhizomata
Information about  Sidalcea calycosa ssp. rhizomata from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (SICAR)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[wildflower.org] Characteristics, Bloom Info, Habitat: Plant Characteristics Duration: Annual , Perennial Habit: Herb Fruit Type: Schizocarp Size Notes: Up to about 3 feet tall. Bloom Information Bloom Color: White , Pink , Purple Bloom Time: Apr , May , Jun , Jul , Aug , Sep Bloom Notes: Pale pink or purple, rarely white. Base of petals paler or white. Distribution USA: CA Native Habitat: Freshwater and salt marshes near coast. (link added by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/15/2025).