Large scandent shrub, branches glabrous, older ones with many lenticels. Leaves coriaceous, oblong, 6-18 by 2½-8 cm, 5-8-nerved; acute to acuminate at the apex, acute to obtuse or rounded at the base; glabrous on both sides; with slightly sunken midrib, slightly prominent to faintly sunken nerves, and faintly prominent to indistinct venation above; with slightly prominent nerves, faintly prominent to indistinct venation beneath. Petiole 8-14 mm. Inflorescences terminal, in basal part sometimes with some leaves, or axillary, 2½-10 cm, 10-100-flowered. Pedicel 2½-4 mm. Sepals 1 & 2 orbicular, 3 by 3 mm, 4 & 5 transverse-oval, 2.7-2.8 by 3.2-3.9 mm, glabrous outside. Corolla white or pale yellowish, 12-12.5 mm, tube 2-3 mm; midpetaline field 7-7.5 by 3.5-3.8 mm, densely appressed-hairy (hairs with.2-3(-4) subequal up to 250 µ long branches); lobules 5-6.5 by 5-6 mm, without distinct venation, entire or slightly undulate at margin. Stamens inserted 1-1.5 mm above the corolla-base; filament 0.8-1 mm long, 0.8-0.9 mm broad at the base; anther 2.5-2.8 mm long, 0.9-1 mm broad, 0.5-0.6 mm thick, acuminate (sterile acumen 1 mm) at the apex, cordate at the base. Ovary 2-2.5 by 1.6-1.8 mm, glabrous; stigma conical, with 10 distinct ridges. Fruit ellipsoid, 2 by 1.5 cm, glabrous, smooth.
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