Habit: terrestrial herbs

Tuber: present, globose or ellipsoid, ovoid

Leaf: characteristics: 1

Leaf: shape: orbicular, cordate

Inflorescence: position: terminal or subterminal

Flower: other characteristics: pendulous

Sepal: free or similar

Petal: similar to sepals

Labellum: 3-lobed, 2-lobed, not lobed

Anther: 2-loculed

Stigma: 1

Pollinia: number: 2

Pollinia: other characteristics: granular-farinaceous, neither caudicle nor viscidium, 2-lobed or 4-lobed, without caudicle