Terrestrial leafless saprophytes. Rhizomes short, thin, erect, with thick clustered roots. Stems scapose, erect, simple, with loose alternate scales, sheathed at base. Racemes terminal. Flowers many, perianth not widely spreading; sepals similar in shape, free, concave or cymbiform; petals narrower; lip adnate to base of column, upper portion more or less 3-lobed, hinged to auriculate base through constriction; column long and curved; anther dorsal, nearly erect, extending beyond top of column; pollinia 2, soft and powdery, without stipe or caudicle; stigma entire, depressed under rostellum.
About 12 species, Japan, India, Malaysia, Australia and Papua New Guinea. One species recorded in Taiwan.