Habit: epiphytic herbs

Stem: branched, unbranched, with leaves, noded

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

Leaf: shape: cylindric

Inflorescence: position: laterally on stem

Inflorescence: other characteristics: unbranched

Labellum: with sac or spur or auricles at base, 3-lobed, 2-lobed, adnate to column

Column: with column foot

Pollinia: number: 2

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

Stipe: shape: triangular or subtriangular

Viscidium: other characteristics: wider than stipe