Habit: climbing

Rhizome: noded, with aerial roots

Stem: with leaves

Leaf: characteristics: petiolate

Inflorescence: type: raceme

Inflorescence: position: arising from leaf axil

Flower: other characteristics: resupinate

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

Petal: similar to sepals

Labellum: 3-lobed, pandurate or trumpet-shaped, adnate to column

Pollinia: number: 2, 4

Pollinia: other characteristics: granular-farinaceous, neither caudicle nor viscidium

Fruit:shape: legume-shaped

Fruit: other characteristics: indehiscent

Seed: with thick testa, wingless