Perennial herb, 0.3-0.6 m; rhizome corm-like, usually branched, slender. Leaves terete; sheath dilated, firm, fibrous. Peduncle subterete, inconspicuously striate, smooth. Spathe green, rigid, erect, terete, appears as continuation of stem, subtending inflorescence. Bracts lanceolate-acuminate, imbricate, sheathing flower bud. Inflorescence composed of 3-10 cymes; cymes tubular, lanceolate, usually single flower per cyme in axils; segments lemon-yellow, ovoid to elliptical. Ovary tuberculate. Flowering time Nov.-Mar. Capsule turbinate, ovoid, dark brown.
Slender rhizomatous perennial, 30-60 cm. Leaves terete. Flowers in a narrow inflorescence of 3-10 cymes, yellow, ovary and capsules tuberculate.