Photo: Arctium tomentosum 6.

Roots dug up. Those are by no means small roots - they're on a A3 paper, twice the size of an A4, which is about US Letter). Burdocks like stony ground, so roots dug up often break at 4-8" - 10" if you're lucky. Annala, Helsinki, Finland. Picked. 1999-09-01.
Arctium tomentosum Mill. Engl.: woolly burdock, cottony burdock. Deu.: Filzige Klette. Suom.: seittitakiainen, takiainen. Sven.: ullig kardborre, ullkardborre. Fran.: bardane tomenteuse. Bot. syn.: Lappa tomentosa (Mill.) Lam.
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Photo: Arctium tomentosum 6.