General: Pseudostem leafy

Leaf: other characteristics: ligule 2-lobed

Petiole: present, absent

Bracts or bracteoles: 1-flowered or 2-flowered

Inflorescence: terminal

Calyx: tubular, apex 2-lobed or 2-toothed, apex 3-lobed or 3-toothed

Corolla lobes: 3, central lobe longer and wider than lateral lobes

Labellum: entire, apex lobed or cleft or concave or emarginate

Stamens or staminodes: petaloid

Filament: short or absent

Anther: basifixed

Connective: forming a reflexed crest

Ovary: 3-loculed

Style: filiform or linear, stylodes free