Scandent, evergreen shrub or small tree; stems rufous-pubescent when young, glabres-cent. Leaves glabrous or rufous-pubescent, usually glabrescent with hairs often remaining on or along main veins, oblong to ovate, 30 -135(-215)x4-50(-75) mm, apex and base rounded to cuneate, midrib prominent below, dark glands sometimes present at insertion of petiole or scattered on undersurface of lamina; petiole short and stout. Pedicels rufous-pubes­cent, 12—34 mm long. Sepals broadly ovate, glabrous or pubescent, 2-7x1,5—5 mm. Pe­tals unguiculate, spreading, concave, margins lacerated, 10—20x9—17 mm, golden yellow. Stamens with filaments broadly linear, 1—2 mm long; anthers 4—7 mm long. Styles stout, curving inward, 8-13 mm long. Fruit with ob­long-triangular wings, 13-42x10-25 mm. Fig. 22.