Mallotus oreophilus Müll. Arg.

Shrubs or small trees, 1.5-13 m tall. Branchlets and inflorescences yellowish-brownish stellate-tomentulose. Stipules ± obsolete; petiole 6-15 cm, gray-yellowish tomentulose; leaf blade ovate, broadly ovate, rhombic-ovate, subreniform, or oblong, sometimes shortly 1- or 2-lobed, 6-15 × 6.5-20 cm, papery, abaxially densely gray-yellowish tomentulose and sparsely yellowish glandular-scaly, adaxially glabrescent, base truncate or obtuse, sometimes broadly cuneate, with 2 basal glands, margin entire, apex abruptly acute or acuminate, or rounded to subtruncate; basal veins 3. Male inflorescences unbranched, 14-30 cm; bracts subulate to lanceolate, 4-5 mm. Male flowers 3-5-fascicled; pedicel 4-7 mm; sepals 5, oblong, ca. 5 mm, tomentulose; stamens 75-85. Female inflorescences unbranched, 12-18 cm; peduncle 1.5-3 cm, strong; bracts sublanceolate, 3-5 mm. Female flowers: pedicel 1.5-4 mm; sepals 6, lanceolate, 3.5-4 mm, tomentose; ovary tomentose and sparsely spiny, stellate-pilose; styles 3, 4-5 mm, almost free, long papillose. Fruiting pedicel 2-3 mm; capsule subglobose, 1-1.2 cm in diam., tomentose and sparsely softly spiny, spines subulate, ca. 5 mm, stellate-pilose. Seeds subglobose, ca. 5 mm in diam., black, verruculose. Fl. and fr. Jun-Aug, or fl. May-Jun.

Sichuan, Xizang, Yunnan [Bhutan, India (W Bengal, Sikkim)].

Mountain valleys or slopes, forests, roadsides; 600-2000 m.

Mallotus oreophilus là một loài thực vật có hoa trong họ Đại kích. Loài này được Müll.Arg. mô tả khoa học đầu tiên năm 1865.