Contr. Dudley Herb. 1: 151. 1930.
Bulbs slender, 25–40 mm. Leaves 6–17 cm; blade green, lanceolate to narrowly elliptic, ± folded along midvein, margins entire to wavy. Scape 6–20 cm. Inflorescences 1–3-flowered. Flowers: tepals 2/3 or more white, with yellow zone at base, ± pinkish in age, broadly lanceolate, 20–35 mm, inner with small auricles at base; stamens 8–14 mm; filaments white, slender; anthers ± yellow; style white, 4–9 mm; stigma ± unlobed. Capsules narrowly obovoid, 2–5 cm. 2n = 24.
Phenology: Flowering late spring to summer (Apr–Jun).
Habitat: Montane meadows, openings in coniferous forests
Elevation: 1200–1900 m