Habit: terrestrial herbs

Stem: noded

Pseudobulb: with sheath

Leaf: characteristics: 1, 2, several to many

Leaf: position: basal, rosette or cauline

Inflorescence: type: raceme

Flower: other characteristics: resupinate, pendulous

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

Petal: narrower than sepals or as long as dorsal sepal

Labellum: 3-lobed, not lobed

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

Pollinia: number: 4

Pollinia: other characteristics: neither caudicle nor viscidium

Fruit:type: capsule

Fruit:shape: globose

Fruit: other characteristics: with 3 or 6 ridges