A graceful climber up to 39 ft. high; branches very slender, minutely puberulous when young. Leaves oblanceolate or oblong, acuminate, acute or cuneate at the base, up to 3 in. long, 1 in. broad, papery, quite glabrous except for small tufts of hairs in the nerve-axils; secondary nerves about 5 on each side, slender; transverse veins faint, subhorizontal; petiole up to 2 lin. long. Cymes 3-1-flowered, axillary on very short peduncles or very loosely arranged in axillary and terminal panicles, branched from the base, up to 4 in. long, very minutely puberulous; rhachis and branches subcapillary; pedicels very slender, up to 2 1/2 lin. long; bracts minute, ovate. Calyx very minutely pubescent, 3/4 lin. long, eglandular; sepals ovate, subacute. Corolla funnel-shaped; tube subcampanulate, very minutely puberulous without, villous in the throat, 1 1/2–2 1/2 lin. long, Suprastaminal calli much projecting, almost cornute; lobes lanceolate from a subauriculate base 3–4 lin. long. Anthers not quite 1 lin. long, pubescent on the back. Carpels hairy at the top; style rather slender, obconic-cylindric, minutely puberulous; stigma subcampanulate with a short bifid apiculus. Follicles very slender, up to more than 2 ft. long; seeds linear, 1 in. long; coma 1 in. long
