A climbing shrub; young branches slender, glabrous, dark brown, with whitish lenticels. Leaves elliptic to elliptic-oblong, abruptly and obtusely acuminate, rounded or subacute at the base, 2 1/2–3 1/2 in. long, 1 1/4–1 3/4 in. broad, thinly coriaceous, quite glabrous, slightly shining above; midrib flat above, distinctly raised below; secondary nerves rather spreading, almost straight, slender, 8–9 on each side, raised below, connected by bold but very fine arches somewhat remote from the margins; veins lax, very obscure; petiole 3–4 lin. long. Flowers sessile in small sessile axillary and terminal (pseudoterminal?) clusters. Calyx glabrous, 1/2 lin. long; sepals very minutely ciliolate. Corolla glabrous without, not quite 3 lin. long in bud; tube cylindric from the base to just beyond the middle, then more or less inflated, constricted again at the mouth, slightly over 1 1/2 lin. long, pubescent within near the insertion of the stamens; lobes oblong, obtuse, slightly over 1 lin. long. Filaments very slender, short; anthers reaching almost to the narrow mouth, ovate-oblong, apiculate. Ovary ovoid, puberulous in the upper part, passing into the slender style; stigma subsubulate from a thickened base, 2-fid; the whole pistil 1 lin. long. Fruit unknown.
