Scandent shrub, younger branches rather densely stellate-hirsute, soon glabrescent, older ones with distinct longitudinal cork-ridges. Leaves elliptic to oblong, 6-13 by 2½-6½ cm, 5-7-nerved; obtuse to acute, usually slightly acuminate at the apex, obtuse to rounded, sometimes slightly cordate at the base; glabrous on both sides; with slightly sunken midrib and slightly prominent nerves and venation above; with prominent nerves and venation beneath. Petiole 6-12 mm. Inflorescences axillary, sometimes 2(-3) together, 1½-6 cm, 5-50-flowered. Pedicel 2-4 mm. Sepals 1 & 2 orbicular to transverse-oval, 3-3½ by 3-4 mm, 4 & 5 transverse-oval, 3-3.2 by 4-4.2 mm, rather sparsely to rather densely stellate-hirsute outside (hairs with 3-8 subequal, up to 500 µ long branches). Corolla yellow, 8 mm, tube 2-3 mm; midpetaline field 2.8-3.5 by 2.5 mm, densely appressed-hairy (hairs (2-)3-6(-9)-branched with generally one stronger, up to 1000 µ long branch); lobules 3-3½ by 3 mm, rather thick, without distinct venation, faintly crenulate at margin. Stamens inserted 0.8-1.3 mm above the corolla-base; filament 0.7-1 mm long, 0.8 mm broad at the base; anther 1.9-2 mm long, 0.8-1 mm broad, 0.5-0.6 mm thick, acuminate at the apex (sterile acumen 0.5-0.6 mm), cordate at the base. Ovary ellipsoid, 1.2 by 1.7-2.2 mm, glabrous for the lower 0.3-0.4 mm, appressed-hairy for the upper part; stigma conical, with 5 distinct and 5 faint ridges. Fruit ellipsoid, 1.7 by 1.1 mm, glabrous except for some hairs at the extreme apex, smooth. Cotyledons plain.
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