Habit: saprophytic herbs

Rhizome: with tufted roots, with fleshy roots

Stem: sheathing below middle, without leaf

Leaf: characteristics: absent

Inflorescence: type: raceme

Inflorescence: position: terminal or subterminal

Flower: other characteristics: actinomorphic

Sepal: free or similar

Labellum: absent

Column: appressed-cylindrical

Anther: 2-loculed

Rostellum: absent

Pollinia: number: 2

Pollinia: other characteristics: granular-farinaceous