General: Pseudostem leafy

Rhizome: tuberous

Leaf: shape: oblong, lanceolate

Bracts or bracteoles: more flowered or 2-ranked and subtending 1 bracteole and 1 flower, 1-flowered or 2-flowered, bracteoles tubular

Inflorescence: spike, dense, terminal

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

Labellum: apex lobed or cleft or concave or emarginate

Stamens or staminodes: petaloid

Filament: long

Anther: dorsifixed, base divaricate

Connective: without appendage

Ovary: 3-loculed, placentation axile

Fruit: globose, 3-valved

Seed: numberous, aril lacerate