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

6. Urtica hyperborea Jacquin ex Weddell, Monogr. Urtic. 68. 1856.

高原荨麻 gao yuan qian ma

Herbs perennial, caespitose, monoecious or dioecious. Rhizomes woody, thick. Stems pale brownish and purplish, simple or branched, cylindric basally, somewhat 4-angled apically, 10-50 cm tall, sparsely puberulent and densely armed with stinging hairs; internodes compact. Stipules free, reflexed, oblong or oblong-ovate, 2-4 mm, ciliate; petiole 0.2-0.5(-1.6) cm, puberulent, with stinging hairs; leaf blade green-blue when dry, ovate or cordate, 1.5-7 × 1-5 cm, 3(-5)-veined, lateral basal veins arcuate, reaching distal margin and anastomosing, impressed adaxially, prominent abaxially, both surfaces with stinging and puberulent hairs, base cordate, margin 6-11-dentate, apex acute or short acuminate; cystoliths punctiform, conspicuous adaxially. Inflorescences unisexual, male ones in proximal axils, short spicate or in clusters, 1-2.5 cm. Male flowers long pedicellate, in bud ca. 1.3 mm, perianth lobes connate 1/2 of length, hirtellous. Female flowers: perianth lobes connate at base, membranous, unequal, dorsal-ventral lobes much larger, suborbicular, 3-5 mm, 2 times as long as achene, setulose and sometimes with 1 or 2 stinging hairs on ribs, lateral lobes ovate, 8-10 times as short as dorsal ones. Achene pale gray, oblong-ovoid, compressed, ca. 2 mm, smooth, invested by persistent perianth lobes. Fl. Jun-Jul, fr. Aug-Sep.

Alpine meadows, thickets, crevices; 3000-5200 m. S Gansu, Qinghai, NW Sichuan, S Xinjiang, Xizang [Sikkim].

The invalidly published “Urtica kunlunshanica” Chang Y. Yang (Claves Pl. Xinjiang. 2: 84. 1982) belongs here.


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