Habit: terrestrial herbs

Rhizome: retrose or transverse or creeping or ascending

Leaf: characteristics: 1, plicate or plicate-venous, petiolate

Inflorescence: type: raceme

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

Sepal: free or similar, lateral sepals adnate to column foot or labellum forming a mentum

Petal: similar to sepals, narrower than sepals or as long as dorsal sepal

Labellum: 3-lobed, adnate to column

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

Anther: 2-loculed

Operculum: apically mucronate

Pollinia: number: 2