Habit: epiphytic herbs

Stem: with leaves

Leaf: characteristics: sheathing or noding at base, margin recurved or apex lobed, base clasping

Leaf: position: distichous

Leaf: shape: lanceolate, oblong

Inflorescence: type: raceme

Sepal: free or similar, concave, lateral sepals spreading or oblique or reflexed or connivent

Petal: shorter or smaller than sepals, similar to sepals

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

Column: without column foot

Rostellum: 2-lobed or beaked

Pollinia: number: 4

Pollinia: other characteristics: with caudicle or viscidium, with stipe

Viscidium:shape: cymbiform