Oenothera pallida var. latifolia Rydberg, Contr. U.S. Natl. Herb. 3: 159. 1895; Anogra cinerea Rydberg; A. latifolia (Rydberg) Rydberg; A. pallida (Lindley) Britton var. latifolia (Rydberg) Small; O. latifolia (Rydberg) Munz

Herbs perennial, densely strigillose throughout; from a taproot, lateral roots producing adventitious shoots. Stems usually several, branched from base, sometimes unbranched. Leaves: rosette not present at anthesis, 1–5(–7) × (0.4–)0.7–1.5 cm; blade narrowly ovate to oblong-lanceolate or lanceolate, margins shallowly sinuate-dentate or denticulate. Flowers: buds with free tips 1–2 mm; floral tube 15–40 mm; sepals 12–30 mm; petals 15–40 mm. Capsules spreading, straight or curved, sometimes contorted. 2n = 14.

Flowering Jun–Sep. Open sites, sandy soil, dunes, rocky sites in grasslands; 600–2000(–3100) m; Colo., Kans., Nebr., N.Mex., Okla., S.Dak., Utah, Wyo.

Some collections from mostly disturbed sites in northern Utah (Cache, Salt Lake, Summit, and Tooele counties) have been identified as subsp. latifolia; it is not clear if they represent a disjunct distribution area of this subspecies, naturalized populations, or if they are pubescent forms of subsp. pallida.