Comfrey, Gewone smeerwortel, Äkta vallört (Symphytum officinale)

Different sites with more information:

 

botanical.com/botanical/mgmh/c/comfre92.html

 

linnaeus.nrm.se/flora/di/boragina/symph/sympoff.html

 

images.google.se/imgres?imgurl=http://caliban.mpiz-koeln....

 

Done