Habit: epiphytic herbs

Stem: tufted or separate, with leaves, noded

Leaf: characteristics: sheathing or noding at base

Leaf: shape: cylindric

Inflorescence: type: raceme

Inflorescence: position: laterally on stem

Sepal: free or similar

Petal: similar to sepals, free

Labellum: divided into epichil and hypochil

Column: without column foot

Pollinia: number: 2

Pollinia: shape: globose or subglobose

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

Viscidium: other characteristics: wider than stipe, as wide as stipe