Urtica hyperborea Jacq. ex Wedd.

The tender tips are eaten as vegetable.

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

Dioecious, up to 50 cm tall, pubescent undershrub, sparingly covered with stinging hairs. Leaves with 0.4-2.0 cm long petiole; lamina ovate or broadly ovatesubrotundate, 1-4.5 cm long, 1-2.5 cm broad, subcordate-truncate at the base, margin serrate, apex acute; stipules ovate-oblong, connate, 4-6 mm long. Panicle of cymes axillary, longer than petiole. Flowers greenish-purple. Sepals orbicular, not armed hispid, enlarged in fruit. Achenes oblong-ovate, c. 2 mm long.

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.

Distribution: Pakistan, India, Tibet from 3000-6000 m in the Himalayas.

S Gansu, Qinghai, NW Sichuan, S Xinjiang, Xizang [Sikkim].

Himalaya (Kashmir to Bhutan), Tibet, Mongolia.

4100-5100 m

Fl.Per.: May-August.

Alpine meadows, thickets, crevices; 3000-5200 m.

Flowering from June to July; fruiting from August to September.

Urtica hyperborea is occurring in S Gansu, Qinghai, NW Sichuan, S Xinjiang, Xizang of China, Sikkim.

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 cm, puberulent, with stinging hairs; leaf blade green-blue when dry, ovate or cordate, 1.5-7 cm long, 1-5 cm wide, 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.

Growing in alpine meadows, thickets, crevices; 3000-5200 m.

Urtica hyperborea là loài thực vật có hoa trong họ Tầm ma. Loài này được Jacq. ex Wedd. miêu tả khoa học đầu tiên năm 1856.

高原荨麻（学名：Urtica hyperborea）是荨麻科荨麻属的植物。分布于锡金以及中国大陆的甘肃、新疆、青海、四川、西藏等地，生长于海拔3,000米至5,200米的地区，一般生于高山石砾地、岩缝以及山坡草地，目前尚未由人工引种栽培。