Habit: terrestrial herbs, semi-epiphytic herbs, epiphytic herbs

Leaf: characteristics: petiolate, base clasping

Leaf: position: basal, rosette or cauline

Inflorescence: type: raceme

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, 2-lobed, not lobed

Pollinia: number: 4

Pollinia: other characteristics: neither caudicle nor viscidium

Fruit:type: capsule

Fruit:shape: elliptic, globose