Habit: terrestrial herbs

Rhizome: with tufted roots, with fleshy roots

Leaf: characteristics: several to many, petiolate

Leaf: position: basal

Inflorescence: type: raceme, spikelike

Inflorescence: position: terminal or subterminal

Sepal: dorsal sepal connivent with petals forming a hood, concave, lateral sepals adnate to column foot or labellum forming a mentum, lateral sepals dilated or saccate at base or bent downward

Column: with column foot, puberulous or pubescent

Stigma: 2

Rostellum: ligulate or ovate or U-shaped or deltoid

Pollinia: number: 2

Pollinia: shape: subclavate or ovate

Pollinia: other characteristics: granular-farinaceous, with caudicle or viscidium