Leafy shoot up to 4 m high. Petioles up to 2.5 cm long; lamina up to c. 1 m x 15 cm, lanceolate, acuminate, lightly pubescent or glabrous below; ligule to 1 cm long, entire. Inflorescence usually borne separately on a prostrate (occasionally erect) stalk up to 40 cm. Bracts 2-3 x 0.8-1 cm, lanceolate, acute, glabrous, rather persistent but becoming fimbriate with age. Cincinni many-flowered. Bracteoles up to 2.5 cm long, tubular, mucronate, glabrous. Calyx up to 2 cm long, 2- or obscurely 3-lobed, lobes mucronate. Corolla-tube about as long as the calyx; lobes 1-1.5 cm long, rounded at the apex, the dorsal lobe widest. Labellum white, streaked violet, 1.5-2 x 1 cm at widest part, obovate, obscurely 3-lobed, narrowed at the base. Lateral staminodes inconspicuous, subulate. Anther sessile; thecae c. 1 cm long, parallel, connective prolonged into a short, entire crest. Ovary 2-3 mm long, glabrous. Capsule oblong or globose
*Description source: Not verified.