鼎湖血桐 ding hu xue tong

Macaranga balansae Gagnepain; M. hemsleyana Pax & K. Hoffmann; Mallotus populifolius Hemsley (1894), not (Miquel) Müller Argoviensis (1866).

Small trees or shrubs, 2-7 m tall. Branchlets yellowish brown tomentose when young, becoming glabrous, sometimes glaucous. Stipules lanceolate, 7-10 × 2-3 mm, pubescent, deciduous; petiole 5-13 cm, pilose; leaf blade deltoid-ovate or orbicular-ovate, 12-17 × 11-15 cm, thinly leathery, abaxially pubescent and sparsely glandular-scaly, base subtruncate or broadly cuneate and narrowly peltate, with 2 glands, margin repand or coarsely serrate, apex acuminate; palmate veins 7-9. Male and female inflorescences paniculate, 7-14 cm, pubescent; bracts ovate-lanceolate, 5-12 mm, apex caudate, margin 1-3-dentate. Male flowers 5 or 6 per bract; pedicel ca. 1 mm; sepals 3, ca. 1 mm, puberulent; stamens (3 or)4(or 5). Female flower solitary; sepals (3 or)4, ovate, ca. 1.5 mm, pubescent; ovary 2-locular; style 2, ca. 2 mm. Fruiting pedicel 2-4 mm; capsule 2-lobed, ca. 8 mm wide, glandular-scaly. Fl. May-Jun, fr. Jul-Aug.

Mountain slopes, valleys, forests; 200-800 m. SW Fujian, Guangdong, Guangxi, Hainan, Yunnan [N Vietnam].