Description from Flora of China
Herbs, terrestrial or lithophytic, monopodial. Stems erect, short, rooting at base. Leaves several, subbasal, distichous, flat, fleshy, base articulate and sheathing. Inflorescence arising laterally from base of stem, erect, racemose, laxly several to many flowered. Flowers medium-sized. Sepals and petals free; lateral sepals rather broad, base broadly adnate to column foot forming a distinct mentum. Lip attached at base to end of column foot, 3-lobed, long clawed, with 2 small basal lobes on both sides of claw and an appendage between them; lateral lobes erect; mid-lobe rather thick. Column short, narrowly winged, with a long foot at base; stigma concave, large; rostellum rather long, narrow; anther cap subglobose; pollinia 4, separate from each other, waxy, subglobose, with a common long, linear stipe; viscidium ovate.
Two species: from NE India to China, south to Indochina, Thailand, Malaysia, and Indonesia; one species in China.
(Authors: Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood)