Calflora Taxon Report
Sidalcea robusta  A. Heller ex Roush
Butte county checkerbloom
photo on Calflora
2022 Robert Whitaker
photo on Calflora
2022 Robert Whitaker
photo on Calflora
2023 Alaine Arslan
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2020 Larry Leigh
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2019 Woody Elliott
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2023 Leonard Fallscheer
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2023 Robin Carter-Ervin
photo on Calflora
2019 Woody Elliott
photo on Calflora
2023 Alaine Arslan
photo on Calflora
2022 Robert Whitaker
photo on Calflora
2020 Lilyanne Price
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2025 David popp
Sidalcea robusta 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
DJJJASONAFMM

Bloom Period
Genus: Sidalcea
Family: Malvaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot
Communities: Foothill Woodland, Chaparral
Name Status:
Accepted by JEF + CNPS + PLANTS + POWO
External links:

[wikipedia] Range, Habitat, Endangered Species Status: Sidalcea robusta is endemic to Butte County, California, where it is known from about 20 occurrences, including some near Chico. It is a resident of chaparral and woodland habitat in mountain foothills. It is an Endangered species listed by the California Native Plant Society Inventory of Rare and Endangered Plants and The Nature Conservancy.[4][5] (link added by Mary Ann Machi)

Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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