Symphytum × uplandicum

Russian comfrey or Quaker comfrey (Symphytum × uplandicum, syn. S. peregrinum auct.) is a common hybrid between Symphytum officinale and S. asperum. It represents the economically most important kind of comfrey.

It occurs naturally in Caucasus region where it grows in waste areas and disturbed soils. It has been introduced as a crop in many places around the world. and is widespread in the British Isles and interbreeds with S. officinale.