Sidalcea oregana ssp. hydrophila Calflora

Distribution by County 7577

Sidalcea oregana (Torrey & A. Gray) A. Gray ssp. hydrophila (A.A. Heller) C. Hitchc.

Marsh checkerbloom, Oregon checkerbloom

Sidalcea oregana ssp. hydrophila is a perennial herb that is native to California, and endemic (limited) to California.

California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).

Record Count by County


Colusa: 6	Lake: 31	Napa: 1	Tehama: 1
Glenn: 12	Mendocino: 13	Sonoma: 1

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2026. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 01/14/2026).