Habit: epiphytic herbs

Pseudobulb: with leaves, with ridge

Leaf: characteristics: plicate or plicate-venous, petiolate

Inflorescence: type: raceme, panicle

Scape: arising laterally on pseudobulb or base of short stem or nodes of rhizome, hairy

Sepal: abaxially hairy, concave, lateral sepals adnate to column foot or labellum forming a mentum, lateral sepals spreading or oblique or reflexed or connivent

Petal: narrower than sepals or as long as dorsal sepal

Labellum: adnate to column, not lobed

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

Pollinia: number: 8

Pollinia: other characteristics: neither caudicle nor viscidium