Proc. Calif. Acad. Sci., ser. 4, 20: 136. 1931.
Stems slender and delicate, not branching, 3–15 cm. Leaves: basal persistent, 1–2 dm; blade linear, flat. Inflorescences 1–12-flowered. Flowers erect to spreading; perianth open, campanulate; sepals ca. 10 mm; petals white to light blue, lanceolate, 8–12 mm, ciliate only on margins, adaxial surface hairy only distal to gland, apex acute; glands slightly depressed, bordered proximally by ciliate membrane, distally by short hairs; anther apex acute to acuminate. Capsules nodding, angled, 1–2 cm, apex acute. Seeds irregular.
Phenology: Flowering late spring.
Habitat: Open places in woods, meadows
Elevation: 1500–2000 m
Of conservation concern.
Calochortus westonii is known from the Greenhorn Mountains, Kern and Tulare counties.