Habit: terrestrial herbs

Rhizome: retrose or transverse or creeping or ascending, noded, cylindrical

Stem: with leaves

Leaf: characteristics: petiolate

Inflorescence: type: raceme, spikelike

Inflorescence: position: terminal or subterminal

Flower: other characteristics: resupinate

Sepal: abaxially hairy, dorsal sepal connivent with petals forming a hood, lateral sepals spreading or oblique or reflexed or connivent

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

Column: without appendage

Anther: 2-loculed

Rostellum: 2-lobed or beaked

Pollinia: number: 2

Pollinia: other characteristics: granular-farinaceous, 2-parted, with caudicle or viscidium