Habit: epiphytic herbs

Stem: noded

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

Leaf: position: distichous

Inflorescence: position: laterally on stem

Inflorescence: other characteristics: branched, unbranched

Flower: other characteristics: spreading

Petal: similar to sepals

Labellum: 3-lobed

Column: with column foot, without column foot

Rostellum: 2-lobed or beaked

Pollinia: number: 2, 4

Pollinia: other characteristics: with stipe

Viscidium: other characteristics: apex lobed