Plants annual or biennial. Basal leaf blades trullate. Cauline leaves distinct or perfoliate. 2n = 12. Flowering Apr-Jul. Drier coniferous woodlands or shrub-lands; 100-3000 m; B.C.; Calif., Colo., Idaho, Mont., Nev., Oreg., S.Dak., Utah, Wash., Wyo.