Flowers: perianth lobes 6-10 mm wide; staminodia margins 1/4 involute; ovary 7-11 mm. 2n = 12.

Flowering spring (late May--early Jun). Grasslands, open woodlands, gravelly clay soils; 0--800 m; Calif.

Subspecies californica is found in the foothills and grasslands of northern California. There are unverified reports of occurrence in southern Oregon.