Description from Flora of China
Alstonia paupera Handel-Mazzetti; Wikstroemia hemsleyana H. Léveillé.
Shrubs erect, to 2 m tall, glabrous. Branchlets lenticellate. Leaves in whorls of 3-5; petiole 0.5-1.5 cm; leaf blade very narrowly obovate or elliptic, 4-14 X 0.8-3 cm, thin papery, glabrous, apex acuminate or caudate; lateral veins 27-70 pairs, at 45-60° to midvein. Cymes longer than leaves; peduncle 1.5-3.5 cm. Pedicel to 2-15 mm. Corolla white, tube 1-2 cm; lobes oblong, 6-10 mm. Disc lobes shorter than ovary. Ovaries distinct, ca. 1.5 mm. Follicles distinct, linear, 5-10 cm X 3-5 mm. Seeds oblong, ca. 7 mm; cilia at seed apex cream, to 5 mm. Fl. May-Oct.
The roots and leaves are used to stop external bleeding.
* Rocky places in open evergreen forests; 700-1500 m. Guizhou, Sichuan, Yunnan