 The range of this wildflower is over parts of southwestern Northern California, United States, especially Solano and Sonoma counties and at coastal locations south to Monterey County; occurrence is typically in open hilly grasslands at altitudes less than 200 meters in elevation.This California endemic has been a candidate for listing as a U.S. federally endangered species, and some of the remaining fragmented colonies are at risk of local extinction, such that the species is considered locally endangered.Example occurrences are