General: Root tuberous, Pseudostem short or obsolete

Rhizome: tuberous

Leaf: shape: suborbicular, filiform

Leaf: other characteristics: ligule small or absent

Petiole: present

Bracts or bracteoles: 1-flowered or 2-flowered, bracteoles present, bracteoles apex 2-lobed or 2-cleft to base

Inflorescence: terminal, arising from pseudostems, capitate

Calyx: tubular, apex 3-lobed or 3-toothed, split on 1 side

Corolla: shorter or equalling calyx

Labellum: apex lobed or cleft or concave or emarginate

Stamens or staminodes: petaloid

Filament: short or absent

Connective: forming a reflexed crest, appendage entire, 2-cleft or 3-lobed

Ovary: 3-loculed

Fruit: globose

Seed: globose or subglobose, ellipsoid, aril lacerate