血桐 xue tong

Mappa tomentosa Blume, Bijdr. 624. 1826; Croton laccifer Blanco (1837), not Linnaeus (1753); Macaranga molliuscula Kurz; M. tanarius var. brevibracteata Müller Argoviensis; Rottlera tomentosa (Blume) Hasskarl.

Trees 5-10 m tall. Branchlets yellowish brown pubescent when young; branches stout, glabrous, glaucous. Stipules ovate, acuminate, 1.5-3 × 0.7-2 cm, pubescent, deciduous; petiole 10-30 cm; leaf blade ovate-orbicular or suborbicular, 17-30 × 14-24 cm, papery, abaxially glandular-scaly, pubescent along veins, adaxially glabrous, base rounded and broadly peltate, margin entire or serrulate, apex acuminate; palmate veins 7-11. Male inflorescences branched, 5-14 cm; axes slender, pubescent or glabrous; bracts broadly ovate, 3-5 × 3-4.5 mm, fimbriate, pubescent. Male flowers ca. 11 per bract; pedicel ca. 0.5 mm; sepals 3, ca. 1 mm, pilose; stamens (4 or)5 or 6(-10). Female inflorescences branched, 5-15 cm, pilose; bracts ovate, leaflike, 1-1.5 cm, margin fimbriate, pubescent. Female flower solitary; calyx 2- or 3-lobed, pubescent; ovary 2- or 3-locular, sparsely softly spiny; styles 2 or 3, sublingulate, ca. 6 mm. Capsule 2- or 3-locular, ca. 12 mm in diam., densely glandular scaly, scattered softly spiny, ca. 8 mm. Seeds subglobose, ca. 5 mm. Fl. Apr-Jun, fr. Jun-Jul.

Maritime areas, forests, also cultivated in gardens; below 100 m. S Guangdong, Taiwan [E India, Indonesia, Japan (Ryukyu Islands), Malaysia, Myanmar, Philippines, Thailand, Vietnam; N Australia].

The distribution of Macaranga tanarius var. tanarius is India (Andaman and Nicobar Islands), Indonesia, Myanmar, Philippines, Thai-land, Vietnam; N Australia, Pacific islands (Solomon Islands, Vanuatu).