Branchlets dark brown, glabrous; internodes 1/2–1 1/3 in. long. Leaves opposite, ovate, obtuse at apex and base, 2 1/2–3 1/2 in. long, 1 3/4–2 in. broad, coriaceous, glabrous, dull; lateral nerves 5–6 on each side, rather oblique, raised on both surfaces, especially the upper; petiole stout, 2 1/2–4 lin. long. Only detached flowers known. Receptacle and calyx together cupular or campanulate, 2 lin. long. Calyx truncate, irregularly split, 1 1/8 lin. long. Corolla 1 1/2 in. long in bud, glabrous outside, apical swelling oblong-ellipsoid, rounded, 3–3 1/2 lin. long, basal swelling subglobose, 2 1/4 lin. long, 1 3/4–2 lin. in diam.; lobes oblanceolate, 7/8–1 lin. broad. Filaments inserted 4 1/2 lin. below the apex of the corolla-lobes, about 2 3/4 lin. long, tooth 3/8 lin. long; anthers narrowly oblong, 1 1/4 lin. long. Disc pentagonal, 1/4 lin. high. Style skittle-shaped above, thickened part about 3 1/2 lin. long, neck hardly 1 lin. long.
