Habit: terrestrial herbs

Rhizome: retrose or transverse or creeping or ascending

Pseudobulb: with leaves

Leaf: characteristics: 1, sessile or subsessile

Leaf: shape: cordate

Inflorescence: type: raceme

Scape: glabrous, arising laterally on pseudobulb or base of short stem or nodes of rhizome, with sheath

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

Petal: similar to sepals, broader than sepals

Labellum: 3-lobed, adnate to column

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

Operculum: with protrusion

Pollinia: number: 8

Pollinia: other characteristics: with caudicle or viscidium