prickly comfrey, rough comfrey
[Symphytum asperrimum Donn]
Etymology: Symphytum: ancient Greek name from symphyein for "to cause to grow together," possibly referring to its curative value
Plants: erect, perennial forb
Hazardous: Careful, this plant is hazardous!
Conservation Status: Introduced - rarely escaped
USDA Plants Database: Federal Distribution and detailed information including photos Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"