Proc. Calif. Acad. Sci. 2: 104. 1863. 1863
Bulbs 3–5 cm, tunic reddish brown, membranous, with delicate fibers. Leaves 1–3 dm × 2–5 mm, margins not strongly undulate. Panicles 3–7 dm, branches ascending. Flowers vespertine, closing by following morning; tepals spreading but not strongly recurved, white with greenish yellow midveins, oblong, 8–12 mm at anthesis; stamens 8–12 mm, not exceeding tepals; anthers yellow, 1.5–3 mm; style long, 6–8 mm, or short, 2–4 mm; pedicel slender, 2–3 mm. Capsules 1.5–3 mm. 2n = 34.
Phenology: Flowering Apr–Jul.
Habitat: Heavy, usually rocky soils, valleys and hills
Elevation: 0–500 m