Erect herb, up to 0.5 m high, slender, without separate sterile shoots. Leaves lax, cauline, linear, hard. Flowers: inflorescence subcapitate; floral bracts dry, acuminate; sepals 5-8 mm long; spur slender, tapering, 3-6 mm long; viscidia 2 on a 3-lobed rostellum; perianth white; Jan., Feb.
Flowers white; plants 200-500 mm tall; leaves generally linear and hard.