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FOC | Family List | FOC Vol. 5 | Urticaceae | Boehmeria

5. Boehmeria umbrosa (Handell-Mazzetti) W. T. Wang, Acta Bot. Yunnan. 3: 324. 1981.

阴地苎麻 yin di zhu ma

Boehmeria clidemioides Miquel var. umbrosa Handel-Mazzetti, Symb. Sin. 7: 152. 1929; B. bicuspis C. J. Chen; B. pseudotricuspis W. T. Wang.

Herbs perennial, simple or few branched, 0.4-1.2 m tall; upper stems and branchlets appressed strigose. Dioecious or monoecious. Leaves alternate or sometimes opposite; stipules lanceolate, 6-8 mm; petiole 1.5-8 cm, appressed strigose; leaf blade broadly elliptic or broadly rhombic, 5.2-15 × 4.6-11 cm, herbaceous, secondary veins 2 each side of midvein, both surfaces sparsely appressed strigose, base broadly cuneate or subtruncate, margin coarsely 5-9-dentate from basal 1/3, teeth larger distally, apex tricuspidate, terminal tooth as long as leaf blade proper, lateral teeth 1/2-2/3 as long. Glomerules unisexual and on different plants, on specialized axillary branches, these usually unbranched, 3-11 cm, occasionally with a few lateral branches at their base, and always with a tuft of 2-4 small foliage leaves at the apex. Glomerules 1.5-3 mm in diam. Male flowers 4-merous, sessile; perianth lobes ca. 1.5 mm, sparsely puberulent, connate at base, 2 lobes corniculate near apex; rudimentary ovule ellipsoid, ca. 0.6 mm. Fruiting perianth obovoid, compressed, ca. 1 mm, strigose on shoulder, base obtuse, 2-toothed. Fl. Aug-Sep, fr. Sep-Oct.

* Forests, along streams, shady and wet places; 1100-2600 m. NW Guangxi, NW Guizhou, W Sichuan, SE Xizang, N Yunnan.


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