Calochortus uniflorus is a perennial herb that is native to California, and found only slightly beyond California borders.
California Rare Plant Rank: 4.2 (limited distribution).
[Wikipedia] Range: Calochortus uniflorus is a species of flowering plant in the lily family known by the common names Monterey mariposa lily and large-flowered star-tulip.[2][3][4] It is native to western Oregon and to California as far south as San Luis Obispo County. It grows in moist areas, such as meadows, in coastal hills and lower-elevation mountains. Most of the populations are found in the Coast Ranges, but some occur in the Cascades and in the foothills of the Sierra Nevada.[5][6] (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: 03/30/2025).
one or more occurrences