Habit: terrestrial herbs

Rhizome: retrose or transverse or creeping or ascending, with tufted roots

Stem: sheathing below middle, with leaves

Leaf: characteristics: sessile or subsessile

Leaf: shape: ovate, cordate

Inflorescence: type: raceme

Inflorescence: position: terminal or subterminal

Sepal: free or similar

Petal: free

Labellum: 3-lobed, 2-lobed

Anther: 2-loculed

Stigma: concave

Rostellum: ligulate or ovate or U-shaped or deltoid, spreading horizontally or suberect

Pollinia: number: 2

Pollinia: other characteristics: granular-farinaceous, neither caudicle nor viscidium

Fruit:type: capsule