Habit: terrestrial herbs, epiphytic herbs, saprophytic herbs

Stem: with pseudobulb

Pseudobulb: ovoid or elliptic or spindle-shaped or ovate or conical

Leaf: characteristics: sheathing or noding at base

Leaf: position: in two rows

Leaf: shape: elliptic

Inflorescence: type: raceme

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

Sepal: free or similar

Petal: similar to sepals

Labellum: 3-lobed, adnate to column

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

Pollinia: number: 2, 4

Pollinia: other characteristics: with caudicle or viscidium, with slit