Habit: terrestrial herbs

Rhizome: noded, stemlike

Stem: leafy

Leaf: characteristics: sessile or subsessile, petiolate

Inflorescence: type: raceme, spikelike

Inflorescence: position: terminal or subterminal

Flower: other characteristics: resupinate

Sepal: free or similar, abaxially hairy, dorsal sepal connivent with petals forming a hood, concave

Petal: narrower than sepals or as long as dorsal sepal

Labellum: 3-partite

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

Anther: 2-loculed

Stigma: convex, 2

Rostellum: 2-lobed or beaked

Pollinia: number: 2

Pollinia: other characteristics: granular-farinaceous, with caudicle or viscidium

Fruit:type: capsule

Fruit: other characteristics: erect