Habit: terrestrial herbs

Pseudobulb: noded, with sheath

Leaf: characteristics: plicate or plicate-venous, sheathing or noding at base, petiolate

Leaf: position: alternate

Inflorescence: type: raceme

Scape: arising laterally on pseudobulb or base of short stem or nodes of rhizome

Petal: narrower than sepals or as long as dorsal sepal

Labellum: with sac or spur or auricles at base, 3-lobed, adnate to column, not lobed

Column: with wing or triangular-falcate or arm-shaped or subulate appendages

Anther: 2-loculed

Pollinia: number: 8