Habit: terrestrial herbs

Tuber: present

Stem: with leaves

Leaf: characteristics: petiolate

Inflorescence: type: raceme

Inflorescence: position: terminal or subterminal

Flower: other characteristics: resupinate, secund

Sepal: free or similar

Petal: free

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

Anther: 2-loculed

Stigma: 2

Pollinia: number: 2

Staminode: 2

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