Habit: terrestrial herbs, saprophytic herbs

Stem: with leaves, without leaf, noded, with pseudobulb

Pseudobulb: corm-shaped or subtuberous or tubular

Leaf: characteristics: petiolate

Leaf: position: basal

Inflorescence: type: raceme, panicle

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

Inflorescence: other characteristics: branched

Flower: other characteristics: solitary

Sepal: free or similar, lateral sepals spreading or oblique or reflexed or connivent

Petal: similar to sepals, broader than sepals

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

Column: with wing or triangular-falcate or arm-shaped or subulate appendages, with column foot, without column foot

Anther: 2-loculed

Operculum: with protrusion

Pollinia: other characteristics: with caudicle or viscidium