A glabrous climber. Leaves 1 1/2–2 1/2 in. long, 1/3–1 1/4 in. broad, shortly petiolate, varying from lanceolate to elliptic-oblong, acuminate, rounded or broadly cuneate at the base. Cymes usually numerous, axillary and terminal on lateral shoots, many-flowered, 3/4–1 1/2 in. in diam., more or less clothed with minute incurved rust-coloured hairs; branches widely spreading; peduncles 1/2–1 1/2 in. long; bracts 1/2 lin. long, ovate, obtuse, minutely ciliate; pedicels 1–1 1/2 lin. long, glabrous. Sepals 3/4–1 lin. long, broadly ovate, obtuse, minutely ciliate. Corolla rotate-campanulate; lobes 1 1/2 lin. long, twice as long as the tube, oblong, obtuse, glabrous or with a somewhat velvety surface within, but not pubescent. Coronal-lobes reaching nearly to the tips of the anthers, falcate, incurved. Anthers more or less bearded or laciniate at the apex. Style protruded much beyond the anthers; apical part stout, ovoid-clavate, two-lobed or rarely entire.