Plants usually bulbose; bulb coat, when present, membranous. Stems usually not branching or twisted, 4-6 dm. Leaves: basal withering, 1-2 dm; blade linear. Inflorescences 1-4-flowered; bracts 2-4 cm. Flowers erect; perianth open, campanulate; sepals with dark purple or red blotch near base, lanceolate, 1-4 cm, apex acuminate; petals white tinged with lilac, with longitudinal median green stripe on abaxial surface, not spotted, narrowly obovate, 2-4 cm, ± glabrous; glands surrounded by red or purple border, round, depressed, surrounded by conspicuously fringed membrane, densely covered with short, unbranched or distally branching hairs; filaments ca. 6 mm; anthers bluish, oblong, 5-7 mm, ± glabrous, apex obtuse. Capsules erect, tan to brown, linear-lanceoloid, angled, ca. 7 cm, apex acuminate. Seeds light yellow, flat. 2n = 14.

Flowering early--mid summer. Dry rocky slopes in pinyon-juniper woodland; 2300--3200 m; Calif., Nev.

Calochortus panamintensis is restricted to the Panamint Mountains, Inyo County.