Liana. Stipules triangular or deltoid, c. 1 mm long, ± intrapetiolar, the scars forming ± a ring on the older branches. Leaves subcoriaceous to coriaceous, elliptic, elliptic-oblong or-lanceolate, rarely ovate-oblong, 5.5-11 by 2.5-4.5 cm; base cuneate; apex acuminate; margin crenulate; nerves 5-9 pairs; petiole 0.5-1 cm. Inflorescences 3 or 4 times branched, 1.5-2.5 cm long, densely puberulous, ferrugineous. Peduncle 1-2 cm. Bracts triangular, 1-1.25 mm long. Pedicels 1-3 mm. Flowers yellowish. Calyx lobes semiorbicular or triangular, 0.75-1 mm long, puberulous on the outside. Petals ovate-oblong to lanceolate, 4-5 by 1.5-1.75 mm, pilose on the upper 1/2-1/3 inside and on the margins. Disk annular-pulvinate, 1.25-1.5 mm high, 1.5-2 mm ø, short-pilose at the top, in the basal part before to the calyx lobes slightly extended outward and downward. Stamens 1.5-2 mm. Pistil 1-1½ mm emerging from the disk. Ovules 6-10 in each cell. Follicles obovate, c. 4.5 by 2.5 cm, pericarp woody. Seeds (incl wing) ovate-oblong or lanceolate, 3.25-4 by 1 1/3 cm.
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