Arctium tomentosum, commonly known as the woolly burdock or downy burdock, is a species of burdock belonging to the family Asteraceae.- Euro+Med PlantBase - The information resource for Euro-Mediterranean plant diversity.
Description Arctium tomentosum is a biennial herbaceous plant. The stem is erect, with ascending branches. It can reach a height of about . Leaves are grayish white and quite felted, green and glabrous toward the stem. Basal leaves are petiolate. Leaf blade is heart-shaped, with rather denticulater margins. They can reach a length of and a width of . Flowers are purplish red, with a diameter of . This species can be distinguished from related ones because the underside of the leaves is covered with white woolly hairs. Flowers and fruits appear from July to September.
Taxonomy Arctium tomentosum was first described by the English botanist Philip Miller in 1768.
Distribution Arctium tomentosum is native to Eurasia from SpainAltervista Flora Italiana, Bardana lanuta, Arctium tomentosum Mill. includes photos plus European distribution map to Xinjiang Province in western China.Flora of China Vol. 20-21 Page 153 毛头牛蒡 mao tou niu bang Arctium tomentosum Miller It is also naturalized in other parts of the world such as North America.Biota of North America Program 2014 county distribution map
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References
Bibliography
Pignatti S. - Flora d'Italia (3 voll.) - Edagricole - 1982 Tutin, T.G. et al. - Flora Europaea, second edition - 1993 Zangheri P. - Flora Italica (2 voll.) - Cedam - 1976
External links
Catalogue of Life Tela botanica