Lesquerella ovalifolia Rydberg var. alba Goodman, Rhodora 38: 239. 1936; L. engelmannii (A. Gray) S. Watson subsp. alba (Goodman) C. Clark; L. ovalifolia subsp. alba (Goodman) Rollins & E. A. Shaw; Physaria ovalifolia var. alba (Goodman) B. L. Turner

Caudex usually simple. Stems usually few from base, erect or outer decumbent, 1.5-2.5 dm. Basal leaves: blade (outer) often broadly elliptic, base narrowing gradually to petiole, margins sinuate to dentate (or blade deltate, less than 1 cm, base abruptly narrowed to petiole). Racemes usually elongated. Petals white, (9-)11-15 mm, often 2 times as long as sepals. 2n = 12.

Flowering Mar-May, usually in Apr. Limey and gravelly knolls, grassland hills, limestone hillsides and breaks, gypsum, shale, rocky calcareous soils, stony areas, prairie pastures, limestone roadcuts; 150-700 m; Kans., Okla.