Description from
Flora of China
Urtica petiolaris Siebold & Zuccarini, Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 4(3): 215. 1846.
Plants monoecious. 40-150 cm tall, Stipules 20 mm, herbaceous; leaf blade often oblong-lanceolate, 10-24 × 3-7 cm, membranous, base rounded or emarginate, margin coarsely crenate-dentate, doubly serrate, acumen serrulate. Male inflorescence a cymose-panicle, 1-5 cm. Male perianth lobes subapically corniculate. Fl. Jun-Oct, fr. Sep-Dec.
Moist places in broad-leaved forests; 700-1100(-2700) m. Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Sichuan, Taiwan, Yunnan, Zhejiang [Japan].
