Description from Flora of China
Rhizomes tuberous. Pseudostems leafy. Leaves sessile or shortly petiolate; leaf blade oblong-lanceolate or elliptic-oblong. Inflorescence a terminal spike, few flowered; bracts colored; bracteoles small. Calyx tubular, split to above middle on 1 side, apex minutely toothed. Corolla tube subcylindric; lobes erect, ovate-lanceolate or lanceolate, central one larger than lateral ones. Lateral staminodes absent. Labellum reduced to a tooth at base of filament or absent. Filament exserted above corolla, long, boat-shaped, margin incurved; anther locules parallel; connective without appendage or spur. Ovary 3-loculed; ovules many per locule, superposed. Stylodes 2, subfusiform. Capsule unknown.
Seven species: China, Indonesia (Borneo, Sumatra), ?Myanmar, Papua New Guinea; one species (endemic) in China.