Habit: terrestrial herbs

Tuber: present, rhizomelike, its neck with roots

Stem: with leaves

Leaf: shape: lanceolate

Inflorescence: type: raceme

Inflorescence: position: terminal or subterminal

Sepal: free or similar

Petal: shorter or smaller than sepals

Labellum: with sac or spur or auricles at base, not lobed

Anther: 2-loculed

Pollinia: number: 2

Staminode: 2

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