1. Oxyspora paniculata (D. Don) Candolle, Prodr. 3: 123. 1828.
尖子木 jian zi mu
Arthrostemma paniculatum D. Don, Mem. Wern. Nat. Hist. Soc. 4: 299. 1823; Bredia soneriloides H. Léveillé.
Shrubs 1-2(-6) m tall. Stems 4-sided to obtusely 4-sided, furfuraceous stellate and sparsely puberulous-setose. Petiole 1-7.5 cm, densely furfuraceous stellate; leaf blade ovate, narrowly elliptic-ovate, or suborbicular, 12-24(-32) × ca. 15.5 cm, stiffly papery, abaxially usually furfuraceous stellate on veins, adaxially furfuraceous squamose or glabrescent, secondary veins 3 on each side of midvein, base rounded to subcordate, margin denticulate, apex acuminate. Inflorescences terminal, a cymose panicle, 20-30 × ca. 10 cm or wider, furfuraceous stellate, with 2 leaflike bracts at base. Bractlets and bracteole lanceolate to subulate, 1-3 mm. Hypanthium narrowly funnelform, ca. 8 mm, longitudinally 8-ribbed, with dense stellate trichomes when young but glabrescent. Calyx lobes shortly triangular-ovate, ca. 1 mm, apex acute and apiculate. Petals pink, red, or dark red, ovate, ca. 7 mm. Longer stamens with connective swollen but not spured. Shorter with connective shortly spurred. Capsule obovoid, ca. 8 × 6 mm; hypanthium narrowly funnelform. Fl. Jul-Sep(-Oct), fr. Jan-Mar(-May).
Mixed forests, stream banks, valleys, moist places; 500-2000 m. Guangxi, Guizhou, Xizang (Mêdog), Yunnan [Bhutan, Cambodia, India, Laos, Myanmar, Nepal, Vietnam].