Young branchlets dark, at first shortly rusty-pilose, soon becoming inconspicuously puberulous, about 1 1/4 lin. in diam. 6 in. below the apex, nodose; branches rather stout, 2 1/2–2 3/4 lin. in diam., pallid, glabrous, densely lenticellate, lenticels rusty-brown; internodes 4–13 lin. long. Leaves alternate, mostly lanceolate (more rarely linear-lanceolate or elliptic-oblong), straight or subfalcate, obtuse or rounded at the apex, cuneate or subcuneate into the base, 1 1/2–3 in. long, 7–12 lin. broad, rigidly coriaceous, glabrous; lateral nerves 2–4 on each side, very oblique, raised on both surfaces; petiole 3–4 lin. long, shortly rusty-pilose. Umbels axillary, solitary, 9–12-flowered; peduncle, pedicels and bract shortly rusty-pilose; peduncle about 3 1/2 lin. long; pedicels 2 1/4 lin. long; bract ovate or elliptic from a saucer-shaped base, dorsal margin 1/2 lin. long, ventral margin patulous, hardly 1/4 lin. long. Receptacle and calyx together cupular, 1 1/8–1 1/4 lin. long, slightly constricted below the apex, very minutely papillate outside. Calyx shallowly lobed, about 1/4 lin. long, ciliolate; intramarginal ring 1/8 lin. high. Corolla reddish-brown and yellow (Engler), about 1 3/4 in. long, puberulous outside, apical swelling oblong, 2 1/2 lin. long; tube split unilaterally about 8 lin. down, basal swelling ellipsoid, 2 1/2 lin. long; lobes erect, lanceolate-linear, acute, 5 lin. long, upper part shallowly boat-shaped, 2 1/2 lin. long, 1/2– 5/8 lin. broad, hard inner layer sharply demarcated below. Filaments inserted at the base of the corolla-lobes, about 2 3/4 lin. long, darker and slightly thickened towards the apex, tooth 1/6 lin. long; anthers oblong-linear, 1 1/2 lin. long. Disc pentagonal, shortly 5-lobed, 1/4 lin. high. Style skittle-shaped above, thickened part 3–3 1/4 lin. long, neck nearly 1 1/2 lin. long; stigma ellipsoid, 1/3 lin. long.
