Lesquerella ovata Greene

Caudex branched (well-developed). Stems several from base, stiffly erect, (unbranched, slender), 1-2 dm. Basal leaves: blade (outer) suborbicular or ovate to elliptic, base narrowing abruptly to petiole, margins entire. Racemes usually not elongated (subumbellate). Petals usually yellow, rarely white, 6.5-12(-14) mm, usually 1.5 times or less as long as sepals. 2n = 12, 24, 36, 48, 50, 72.

Flowering Mar-May. Bare limestone flats, rocky knolls and slopes, limestone chip, gypseous outcrops, rock crevices, exposed caprock; 500-1700 m; Colo., Kans., Nebr., N.Mex., Okla., Tex.