[Wikipedia] Range, Habitat: Trifolium macrocephalum is native to the Great Basin region of the western United States, from Washington to northern California, and Nevada to Idaho. It occurs in several types of habitat, including sagebrush scrub, juniper woodland, yellow pine forest, and mountain woodlands. It prefers thin-soiled, rocky areas. (link added by Mary Ann Machi)
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: 03/31/2025).
