Perennial, grass-like herb. Leaves linear, semi-terete, up to 0.4 m long, usually glabrous, occasionally pubescent, margins sometimes ciliate. Inflorescence simple or sparsely-branched raceme, up to 1 m high, with pubescent peduncle; pedicels erect in fruit, up to 16 mm long. Flowers white. Flowering time Sept.-June. Fruit a glabrous capsule.
Rhizomatous perennial to 80 cm, roots many, wiry. Leaves lanceolate to linear, usually pubescent. Flowers in a sparsely branched raceme with pubescent peduncle, often developing axillary plantlets, white.