Habit: epiphytic herbs

Pseudobulb: ovoid or elliptic or spindle-shaped or ovate or conical, with leaves

Leaf: characteristics: 1, petiolate

Inflorescence: type: raceme

Scape: emerging from center of leaves or pseudobulb base or rhizome

Sepal: free or similar

Labellum: 3-lobed, with longitudinal ridges or keels, not lobed

Column: with wing or triangular-falcate or arm-shaped or subulate appendages, with column foot

Anther: 2-loculed

Stigma: concave

Rostellum: ligulate or ovate or U-shaped or deltoid, spreading horizontally or suberect

Pollinia: number: 4

Pollinia: other characteristics: with caudicle or viscidium