Oxyspora balansae (Cogniaux) Maxwell.

Shrubs, 1-7 m tall. Stems 4-sided when young, densely furfuraceous, becoming terete and glabrescent; bark black; branches numerous. Petiole 2-4.5 cm, furfuraceous; leaf blade ovate, broadly ovate, elliptic, or rarely lanceolate, 6.5-19 × 2.5-9 cm, stiffly papery, abaxially furfuraceous, adaxially glabrous or sparsely furfuraceous when young, secondary veins 2 on each side of midvein, outer secondary vein inconspicuous and close to leaf margin, base rounded to broadly cuneate, margin entire or slightly sparsely serrulate, apex acuminate to caudate-acuminate. Inflorescences terminal, narrowly paniculate cymose, 17-26 × 2-4 cm, furfuraceous. Pedicel ca. 2 mm. Hypanthium narrowly funnel-shaped, 4-5 mm at anthesis, furfuraceous. Calyx lobes narrowly triangular to almost clavate, ca. 1 mm. Petals pink, broadly ovate to ovate, 3-5 mm, apex acute. Filaments ca. 2.7 mm; anthers 3.5-4 mm; connective not inflated, not spurred. Ovary ovoid, apex 4-denticulate. Capsule ovoid, 3.5-4 × 3-4 mm; hypanthium ca. 5 mm, longitudinally 8-ribbed, furfuraceous, apically contracted. Fl. Jun-Aug, fr. Oct-Dec.

Mixed forests, thickets, moist places; 400-1500 m. Guangxi, Hainan, Yunnan [Thailand, Vietnam].