Symphytum asperum
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Template:Short description Template:Speciesbox
Symphytum asperum is a flowering plant of the genus Symphytum in the family Boraginaceae. Common names include rough comfrey[1] and prickly comfrey.[2] It is the tallest Symphytum species.[3] 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.
References
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