Habit: terrestrial herbs

Tuber: present, not lobed, its neck with roots

Stem: with leaves

Leaf: characteristics: 1, 2

Leaf: shape: oblong

Inflorescence: position: terminal or subterminal

Flower: other characteristics: resupinate

Sepal: free or similar

Petal: broader than sepals

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

Stigma: convex, 2

Pollinia: number: 2

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