Rhynchanthus J.D.Hooker
General: Pseudostem leafy
Rhizome: tuberous
Leaf: shape: elliptic-oblong, oblong-lanceolate
Petiole: present, absent
Bracts or bracteoles: bracteoles present
Inflorescence: spike, terminal
Calyx: tubular, apex 3-lobed or 3-toothed, split on 1 side
Corolla lobes: central lobe longer and wider than lateral lobes
Labellum: reduced to a tooth or absent
Stamens or staminodes: lateral staminode absent or very short
Filament: exserted from or above corolla, distally grooved, boat-shaped
Anther: locules parallel
Connective: without appendage
Ovary: 3-loculed, ovules many per locule
Style: stylodes 2, filiform or linear