[Wikipedia] Range, Distribution, Habitat: Erythronium citrinum, also known as citrus fawn lily or cream fawn lily, is a member of the lily family that is endemic to the Klamath Mountains. It is found in southwest Oregon and adjacent northwest California. The genus Erythronium, which can be found across northern North America, Europe and Asia, is most diverse in California, which is home to fifteen of about twenty-eight members of the genus. Distribution and habitat Erythronium citrinum grows in open woods and shrubby slopes, and is more or less confined to serpentine soils.[1] It blooms in early spring and can sometimes be seen blooming in profusion. (link added by Mary Ann Machi)