Assertion: russian comfrey | /r/HasProperty | s. x uplandicum nyman
Facets:
Source sentences:
text: (Huizing, Gadella, and Kliphuis 1982), including Russian comfrey (S. x uplandicum Nyman), which is the most commonly encountered commercial comfrey in Britain (Clapham, Tutin and Warburg 1962) due to its popularity as a garden fertiliser especially the strain called Bocking.