Assertion: russian comfrey | /r/HasProperty | hybrid
Facets:
value: between prickly comfrey
type: OTHER
Source sentences:
text: The two most often discussed species of comfrey are Symphytum officinale (common comfrey) and Symphytum x uplandicum (Russian comfrey, a hybrid).
text: Russian comfrey (S.x uplandicum) is a hybrid between common comfrey and prickly or rough comfrey and prefers drier ground.
text: Russian comfrey (Bocking 14) is actually a hybrid between true comfrey and prickly comfrey, both of which, are pretty invasive by self seeding.
text: Comfrey’s other, reasonably common, relatives are prickly comfrey (S. asperum) and Russian comfrey (S. x uplandicum), which is a hybrid between comfrey and prickly comfrey.