Slender to robust bulbous perennial with the stem usually erect, sometimes decumbent.
Leaves filiform to lanceolate, usually hairless, occasionally hairy, often greyish-green. Inflorescence a more or less lax raceme with few-many flowers; pedicels erect or ascending, more than 1.5 cm long; bracts lanceolate to ovate.
Flowers one-sided, facing upwards, in decumbent specimens, sometimes appearing before the leaves, white to greenish yellow with a broad green dorsal band on perianth segments. Capsule ovoid.