Perennial herb, geophyte, 0.08-0.20 m high; corm ovoid, asymmetric, tunics pale to dark brown, concentric; stem erect, single or 2-5 produced from base. Leaves 4-several, ensiform, falcate; cauline bract-like. Bracts green, margins often reddish. Inflorescence a 1-flowered spike; flowers white, outer tepals often flushed red on reverse, stellate; perianth tube funnel-shaped; tepals 8-12 mm long, obovate. Stamens 5-7 mm long; anthers 2.0-3.5 mm long, pollen yellow. Ovary 2-3 mm long; style dividing at apex of anthers, branches recurved. Flowering time Aug., Sept. Capsule narrowly ovoid.
Cormous geophyte, 6-18 cm, tunics woody, concentric. Leaves sword-shaped to ovate, often prostrate. Flowers 1-few per spike, white, tepals spreading.