Eupatorium rotundifolium L.
Engl.: round-leaved hemp-weed, wild horehound.
Classic texts: King's 1898.
Classic texts: Journals: AJP 1885.
Classic texts: Cook 1869.
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.
http://www.henriettes-herb.com - Copyright 1995–2019 Henriette Kress.