Habit: terrestrial herbs

Pseudobulb: corm-shaped or subtuberous or tubular, noded

Leaf: characteristics: 1, petiolate

Leaf: shape: ovate, elliptic

Scape: on pseudobulb apex, with sheath

Flower: other characteristics: solitary

Sepal: free or similar

Petal: shorter or smaller than sepals, free, broader than sepals

Labellum: with sac or spur or auricles at base, 3-lobed

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

Pollinia: number: 4

Pollinia: other characteristics: with caudicle or viscidium