Rhizome: retrose or transverse or creeping or ascending

Pseudobulb: with internode

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

Floral bract: small

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

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

Petal: shorter or smaller than sepals

Labellum: adnate to column

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

Anther: 2-loculed

Pollinia: number: 4

Pollinia: other characteristics: without appendage