Epiphytic twining orchid to 5m with leaves to 80mm x 25mm, 1-3 flowered scape to 30mm high with floral bracts to 60mm long, yellow flowers spotted or barred red-brown, dorsal sepal 17mm x 9mm, lateral sepals longer & narrower, petals 17mm long & broader than dorsal sepal, trilobed lip to 32mm x 13.5mm, lateral lobes to 42mm wide, central lobe to 28mm x 35mm.