Plants saprophytic with short rhizome and a cluster of slightly fleshy roots. Leaves none. Stem with brownish or greenish sheaths. Inflorescence terminal, many-flowered. Flowers pale brown or green-brown. Sepals and petals subequal. Labellum spurless, tongue-shaped, bibbed at apex. Column rather slender; anther suberect; pollinia 2, mealy; rostellum sensitive to touch, secreting a drop of mucilage (viscidium); stigma transverse. Ovary with slightly twisted pedicel, pubescent.