A liane, up to 100 yards long and 8 in. in diam.; stems glabrous, bark dull pale brown with numerous lenticels. Leaves oblong, cuneate at the base, acutely acuminate, (acumen about 5 lin. long), 3 1/2–7 in. long, 1 1/3–2 1/2 in. broad, coriaceous, glabrous, dull; secondary nerves about 11 on each side, oblique, connected by submarginal arches, like the veins prominent on both sides. Panicles axillary and terminal, short, compound, dense, many-flowered, globose, 7 1/2 lin. in diam., puberulous; peduncle short; bracts small; pedicels 1/2 lin. long, shortly pubescent. Corolla minutely puberulous without; tube inflated below, then suddenly contracted at the level of the calyx tips, inflated again and contracted at the mouth, about 1 1/8 lin. long, up to 1/2 lin. wide; lobes oblong-linear, as long as the tube, over 1/3 lin. wide. Anthers inserted at the middle. Ovary glabrous, ovoid; style short.
