单羽火筒树 dan yu huo tong shu

Phytolacca asiatica Linnaeus, Sp. Pl. 1: 474. 1753; Leea crispa Linnaeus; L. edgeworthii Santapau; L. herbacea Buchanan-Hamilton; L. pumila Kurz.

Erect shrubs or small trees. Branchlets terete with longitudinal ridges obtuse, sparsely pubescent. Leaves pinnate or 3-foliolate; stipules deciduous; petiole 3-7 cm, central petiolules 3-6 cm, lateral petiolules 0.7-2.5 cm, pubescent or subglabrate; leaflets oblong, ovate-elliptic, or long ovate, 8-22 × 4-13 cm, base rounded or slightly cordate, margin with rounded and obtuse teeth, apex acuminate or caudate, abaxial surface sparsely with scabrous hairs on veins to sometimes pubescent, adaxial surface glabrous or with sparse bristles on veins; lateral veins 11-15 pairs, adaxial veinlets conspicuously protruding. Inflorescences leaf-opposed, compound dichasial, usually branched at base; peduncle 1.2-2 cm, sparsely pubescent. Involucre narrow, triangular, 0.3-0.5 cm; bracts small, long triangular, 1.5-2 × 0.4-0.6 cm, glabrous. Pedicel 1-2 mm, with papillate hairs; buds ovate-elliptic, 2-3 mm, apex rounded. Calyx tube cupulate, margin undulately lobed. Petals elliptic, 1.5-2.5 mm, glabrous. Staminodial tube 1.2-1.5 mm, with lower part 0.2-0.25 mm, upper 1-1.2 mm, lobes 0.5-0.7 mm. Stamens 5; filaments 0.8-1.2 mm; anthers elliptic, 0.8-1 × 0.4-0.5 mm. Ovary globose; style 0.8-1 mm; stigma expanded slightly. Berry oblate, 0.5-0.7 cm, 4-6-seeded. Fl. Apr-Jul, fr. Aug-Dec. 2n = 48.

Forest margins, valleys, along streams; 500-1800 m. Yunnan [Bangladesh, Bhutan, Cambodia, India, Laos, Nepal, Thailand, Vietnam].