Habit: epiphytic herbs
Stem: with leaves
Leaf: position: alternate, distichous
Inflorescence: type: raceme
Inflorescence: position: laterally on stem
Petal: similar to sepals
Labellum: with sac or spur or auricles at base, 3-lobed, adnate to column
Column: with column foot
Pollinia: number: 4
Pollinia: shape: globose or subglobose
Pollinia: other characteristics: with caudicle or viscidium, with stipe
Viscidium:shape: saddlelike or luniform
Fruit:type: capsule
Fruit:shape: cylindrical
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