Assertion: comfrey's pyrrolizidine alkaloid | /r/AtLocation | common comfrey varieties
Facets:
Source sentences:
text: Traumaplant comfrey is grown in Germany without chemical pesticides or artificial fertilizers, and is free of the toxic pyrrolizidine alkaloids found in more common comfrey varieties extracted from the root.
text: Traumaplant comfrey is grown in Germany without chemical pesticides or artificial fertilizers, and is free of the toxic pyrrolizidine alkaloids found in more common comfrey varieties extracted from the root.