Vasilis Teodoridis:
Euphorbiaceae | Aporosa
2. Aporosa dioica (Roxburgh) Müller Argoviensis in A. Candolle; Prodr. 15(2): 472. 1866.
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Alnus dioica Roxburgh; Fl. Ind.; ed. 1832; 3: 580. 1832; Aporosa aurita (Tulasne) Miquel; A. chinensis (Champion ex Bentham) Merrill; A. leptostachya Bentham; A. microcalyx (Hasskarl) Hasskarl; A. microcalyx var. chinensis (Champion ex Bentham) Müller Argoviensis; A. microcalyx var. intermedia Pax & K. Hoffmann; A. roxburghii Baillon; Scepa aurita Tulasne; S. chinensis Champion ex Bentham; S. stipulacea Lindley; Tetractinostigma microcalyx Hasskarl.
Trees to 9 m tall; usually shrubby in secondary forest; ca. 2 m tall; branchlets hirtellous to glabrous. Stipules ovate-lanceolate; 4-6 mm; petiole 5-12 mm; sparsely pubescent; apex bilateral with 2 glands; leaf blade elliptic; narrowly ovate; oblong-elliptic; obovate; or oblanceolate; 6-12 x 3.5-6 cm; leathery; glabrous and lucid adaxially; sparsely pubescent along nerves abaxially; base rounded or cuneate; margin entire or sparsely shallowly dentate; apex rounded to acute. Male flowers axillary in ca. 2.5 x 0.4 cm spikes; bracts ovate-triangular; ca. 1 mm; pubescent outside; sepals usually 4; oblong-ovate; stamens 2-4; longer than sepals. Female flowers: sepals 4-6; triangular; margins ciliate; ovary ovoid; densely pubescent; bilocular; ovules 2 per locule. Capsules ellipsoid; 1-1.3 cm; pubescent; 2-seeded. Seeds subovate; ca. 9 x 5.5 mm. Fl. and fr. almost throughout year.
Montane sparse forests or scrub; 200-1000 m. Guangdong; Guangxi; Hainan; Yunnan [Bhutan; India; Malaysia; Myanmar; Nepal; Thailand; Vietnam].