Habit: epiphytic herbs

Pseudobulb: ovoid or elliptic or spindle-shaped or ovate or conical

Leaf: characteristics: 1, 2, sessile or subsessile, petiolate

Inflorescence: type: raceme

Inflorescence: other characteristics: rachis pubescent or zigzagged flexuose or winged

Sepal: free or similar, concave

Labellum: 3-lobed, not lobed

Column: with wing or triangular-falcate or arm-shaped or subulate appendages, without column foot

Pollinia: number: 4

Fruit:type: capsule

Fruit: other characteristics: winged or ribbed