Large climber, branches rather densely to densely strigose-hirsute, older ones subterete, with rather many orbicular to oval lenticels. Leaves coriaceous, ovate to ovate-oblong or elliptic-oblong, 4½-10(-14) by 2-4½(-6) cm, 8-12-nerved; obtuse, short-acuminate at the apex, obtuse at the base; glabrous, shining, with slightly sunken midrib, slightly prominent nerves and major venation, and faintly prominent or indistinct minor venation above; rather sparsely hirsute, glabrescent, with slightly prominent nerves and venation beneath. Petiole 9-14 mm. Inflorescences axillary, towards the apex of the branches passing into terminal, then usually with some small leaves in the basal part, (2½-)4-25 cm, 10-125-flowered, terminal ones up to 250-flowered. Pedicel 3-5 mm. Sepals 1 & 2 broad-ovate or orbicular to transverse-oval, 2.4-3.6 by 2.6-4.2 mm, 4 & 5 transverse-oval, 2.1-3 by 2.8-4 mm, sparsely to densely strigose outside (hairs 2-branched, up to 500 µ ± total length). Corolla white or yellowish white, 6 ½-9½ mm, tube 2-2½ mm; midpetaline field 3-4.8 by 1.8-3.3 mm, rather densely to densely strigose (hairs 2-branched, up to 900 µ long); lobules 3-4 by 2½-4 mm, rather thin to rather thick, with no or only faintly distinct venation, slightly crenate, or undulate, or entire at the margin, sometimes coherent above the midpetaline field for up to 0.8 mm. Stamens inserted 0.7-1.5 mm above the corolla-base; filament 0.5-1.3 mm long, 0.2-0.6 mm broad at the base; anther 1.3-2 mm long, 0.5-0.7 mm broad, 0.5-0.7 mm thick, acute to acuminate at the apex (sterile acumen up to 0.2 mm), cordate at the base. Ovary 1-1.8 by 1-1.7 mm, glabrous, or rather sparsely hairy in the upper, glabrous in the lower part, or rather sparsely hairy over the whole surface; stigma conical, with 5 or 10 faint to distinct ridges. Fruit ellipsoid, 8 by 5 mm, light green, glabrous, smooth, or (at least in young stages) with dense appressed indumentum. Cotyledons plain.
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