Oenothera decorticans (Hooker & Arnott) Greene var. condensata Munz, Bot. Gaz. 85: 247. 1928; Camissonia boothii (Douglas) P. H. Raven subsp. condensata (Munz) P. H. Raven; C. boothii var. condensata (Munz) Cronquist; O. boothii Douglas subsp. condensata (Munz) Munz

Herbs glabrate to strigillose, sometimes also glandular puberulent in inflorescence. Stems 5–20(–30) cm. Leaves primarily clustered toward base, 2.5–10(–13) × 0.3–2(–2.5) cm; petiole 0–6 cm; blade usually lanceolate to oblanceolate, margins subentire to denticulate. Inflorescences very dense. Flowers: floral tube 3.5–8 mm; petals white, 4–5 mm. Capsules curved outward, not downward, sometimes ± contorted, tapering abruptly distally, 4-angled, much thickened along angles, 2–3.8 mm diam. near base. Seeds dimorphic.

Flowering Feb–May. Sandy slopes and washes, desert scrublands; 80–1300 m; Ariz., Calif., Nev., Utah; Mexico (Baja California, Sonora).

Subspecies condensata intergrades with subsp. desertorum.