Habit: epiphytic herbs

Stem: with leaves, noded

Leaf: characteristics: sheathing or noding at base, apex notched or acute or obtuse or hooked, margin recurved or apex lobed, base clasping

Leaf: position: distichous

Inflorescence: position: opposite leaf

Inflorescence: other characteristics: branched, unbranched

Sepal: free or similar

Petal: shorter or smaller than sepals

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

Column: without column foot

Rostellum: 2-lobed or beaked

Pollinia: number: 2

Pollinia: shape: globose or subglobose

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

Viscidium:shape: orbicular or suborbicular