Large woody climber with glabrescent twigs. Thinly coriaceous leaves to 145mm x 70mm, glabrous above & with a few hairs on midrib beneath. Flowers with thin trangular sepals 6mm x 5mm densely pale-hairy outside & glabrous within, thick coriaceous petals, outer petals to 18mm x 13mm tomentose outside & glabrous within, tomentose inner petals 14mm x 12mm. Angular fruit with 4-5 longitudinal ridges, 35mm x 30mm