Stem robust, up to 50 cm long, densely crispate-pubescent on the younger parts. Leaves large, broadly ovate to elliptic-ovate, slightly oblique, up to 28 by 20 cm, base cordate, apex very shortly triangular-cuspidate, subacute, margin rather distantly and shallowly denticulate, papyraceo-chartaceous when dry, glabrous above, thinly crispate-strigose below (densely when young), especially along the nerves; nerves 5-6 pairs; petiole up to 10 cm. Inflorescences apparently arising singly in 2-3 upper axils, pubescent, up to 8 cm long. Bracts narrowly oblong, up to 1 cm. Pedicels about 1.5 cm. Calyx-tube slender, elongate, up to 3 cm, terete or obscurely angled, ± pubescent. Sepals elliptic, the two larger 2-2½ by 1.5 cm, the remainder about half as large, rounded, white. Petals oblong to narrowly oblong-obovate, c. 10 by 5-6 mm, rounded, fleshy.