Calflora, a 501c3 non-profit
Distribution by County   11137    
Sidalcea hickmanii  Greene  ssp. napensis  S. R. Hill
Napa checkerbloom
Sidalcea hickmanii ssp. napensis is a perennial herb that is native to California.
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).   CNDDB
Record Count by County

Napa: 7 Solano: 2 Sonoma: 9

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]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: 12/07/2022).