Stems not branching, less than 1 dm. Leaves: basal persistent, 1-2 dm; blade linear, flat; cauline usually absent. Inflorescences 1-10-flowered. Flowers ± erect; perianth open, campanulate; sepals lanceolate, 8-10 mm, glabrous, apex acuminate; petals white, obovate, 10-14 mm, not ciliate, adaxial surface glabrous or sometimes with few hairs near gland; glands bordered proximally by ± ciliate membrane; filaments equaling anthers; anthers linear-oblong, apex acute. Capsules nodding, 3-winged, ellipsoid, 1-2 cm. Seeds irregular. 2n = 20. Flowering late spring--mid summer. Moist grassy areas in open woods, along lake margins; 1200--3000 m; Calif. Derivatives of hybridization between Calochortus minimus and C. nudus (pink- to lavender-tinged petals with rounded tips) occur in the northern high Sierra Nevada (B. D. Ness et al. 1990).