Habit: epiphytic herbs

Stem: with leaves

Leaf: characteristics: sheathing or noding at base, apex notched or acute or obtuse or hooked

Leaf: position: distichous

Leaf: shape: falcate

Inflorescence: position: arising from leaf axil

Inflorescence: other characteristics: unbranched

Sepal: free or similar

Petal: free

Labellum: divided into epichil and hypochil

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, with slit

Stipe: shape: linear

Viscidium:shape: saddlelike or luniform