Leaf: characteristics: 1, 2, several to many

Leaf: position: rosette or cauline, distichous

Inflorescence: type: raceme

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

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

Petal: narrower than sepals or as long as dorsal sepal

Labellum: with sac or spur or auricles at base

Column: with column foot

Pollinia: number: 8

Pollinia: other characteristics: with caudicle or viscidium