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Symphytum asperum
Also called Rough Comfrey
Symphytum asperum is a flowering plant of the genus Symphytum in the family Boraginaceae. Common names include rough comfrey and prickly comfrey. It is the tallest Symphytum species. It is native to Asia, and it is known in Europe and North America as an introduced species and sometimes a weed. Symphytum × uplandicum, the naturally occurring hybrid with the common comfrey (Symphytum officinale), is the economically most important kind of comfrey.
Bulbous Comfrey · Caucasian Comfrey · Creeping comfrey · Common comfrey · White Comfrey · Tuberous comfrey · Comfrey
Text excerpted from the Wikipedia article Symphytum asperum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
