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FOC | Family List | FOC Vol. 11 | Euphorbiaceae | Alchornea

1. Alchornea rugosa (Loureiro) Müller Argoviensis, Linnaea. 34: 170. 1865.

羽脉山麻杆 yu mai shan ma gan

Shrubs or small trees, 1.5-5 m tall, dioecious. Branchlets pubescent when young, becoming glabrous. Stipules subulate, 5-7 mm; petiole 0.5-3 cm; leaf blade cuneate-obovate or elliptic to broadly lanceolate, 10-21 × 4-10 cm, thickly papery, base obtuse or slightly cordate, with 2 glands, stipels absent, margins serrulate, apex acuminate; venation pinnate, lateral veins 8-12 pairs. Inflorescence terminal, branched, 7-25 cm, puberulent or glabrous; bracts triangular, ca. 1.5 mm, base usually with 2 glands. Male flowers 5-11 per bract; pedicel ca. 0.5 mm; buds globose, ca. 1 mm in diam., pilose; sepals 2-4; stamens 4-8. Female flowers: pedicel ca. 1 mm, pubescent; sepals 5, triangular, pubescent; ovary densely puberulent; styles 3, filiform. 3.5-7 mm. Fruiting pedicel ca. 2 mm; capsule 3-lobed, ca. 8 mm in diam., subglabrous. Seeds ovoid, ca. 5 mm, brownish, verrucate. Fl. and fr. year-round.

Forests; below 600 m. Guangdong, Guangxi, Hainan, Yunnan [India (Nicobar Island), Indonesia, Malaysia, Myanmar, New Guinea, Philippines, Thailand; N Australia].

1 Leaf blade abaxially pubescent only in axils of veins, adaxially glabrous; styles 6-7 mm.   1a var. rugosa
+ Leaf blade uniformly densely yellowish pubescent; styles 3.5-4 mm.   1b var. pubescens

Lower Taxa


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