Stems twining, up to 15-20 m high; young branches densely pale greyish pubescent or shortly tomentose as are the petioles, peduncles and inflorescences; adult branches glabrescent. Leaves elliptic-oblong, elliptic or ovate-ellptic, 6-13 by 3½-10 cm; at the base rounded, slightly cordate, or shortly contracted into the petiole; narrowed towards the obtusish, obtuse, or shortly apiculate, mucronulate apex; upper surface strigillose, lower surface with very short, crisped hairs; midrib and 9-12 nerves on either side prominent beneath, flat or slightly sulcate above; minor nervation reticulate; petiole 1.5-6 cm. Peduncles axillary, much exceeding the petioles, straight or slightly curved, 4½-15 cm, umbellately cymose at the apex, with 3-5 branches. Pedicels 1-2 mm. Lower bracts oblong-lanceolate, 7-15 mm long, upper ones 2-3 mm. Two exterior sepals broadly ovate-triangular or semi-orbicular, obtuse to rounded, three interior ones orbicular to transverse-ellptic; all 2½-3 mm long, densely pale greyish pubescent to shortly tomentose outside, sepal 3 with one, sepals 4 and 5 with two glabrous lateral margins. Corolla small, deeply 5-lobed, white; tube cylin-dric, 2½-3½ mm long; lobes oblong, ca 5.5-6 mm long, reflexed; midpetaline bands sericeous outside, margins glabrous. Filaments inserted at the mouth of the tube, at the base flattened and with a few very short hairs. Ovary glabrous, 2-celled. Fruit ellpsoid, up to 9 mm long, reddish purple.
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