Description from Flora of China
Shrubs 1-3 m tall. Branchlets 4-angled, glabrous. Petiole 2-6 cm; leaf blade elliptic, 2-20 X 4-8 cm, membranous, subglabrous or adaxially sparsely puberulent, base broadly cuneate to rounded, margin entire or slightly undulate, apex acuminate; veins 7 or 8 pairs, abaxially distinct. Panicles terminal, narrow; peduncle slender; bracts linear to lanceolate, deciduous in fruit. Calyx campanulate, 7-9 mm, deeply 5-lobed, glabrous or sparsely puberulent; lobes oblong to elliptic, 4-6 mm. Corolla yellowish or white, tube 1.5-1.8 cm, outside puberulent and glandular; lobes spatulate, ca. 8 mm. Stamens and style long exserted. Fruiting calyx red, inflated. Drupes globose. Fl. and fr. Aug-Dec.
Allied to Clerodendrum wallichii but differs in having elliptic membranous leaf blades and corolla tubes 1.5–1.8 cm.
Dense forests on mountain slopes; 400-2400 m. W Guangxi, S Yunnan [Vietnam]