Basal leaves base typically not reddish. Perianth obconic-campanulate; petals not sharply bent at gland. 2n = 20.

Flowering late spring--mid summer. Vernal meadows, heavy clay soil; 1200--1900 m; Calif., Oreg., Wash.

Calochortus longebarbatus var. longebarbatus is threatened by grazing.