Habit: terrestrial herbs

Pseudobulb: bulblike, articulate, with roots

Leaf: characteristics: 1, 2, sheathing or noding at base, petiolate

Inflorescence: type: raceme

Sepal: free or similar, lateral sepals dilated or saccate at base or bent downward

Petal: free, broader than sepals

Labellum: 3-lobed, not lobed

Column: without column foot

Pollinia: number: 4

Pollinia: shape: globose or subglobose

Pollinia: other characteristics: with caudicle or viscidium