Family Code: ASTERA Genus Code: EUTRO Genus CN: joe pye weed Genus Authority: Raf. Genus Summary: A genus of 5 species, perennial herbs, of North America. The separation of Eutrochium (Eupatoriadelphus) from Eupatorium has been supported by Schmidt & Schilling (2000). Lamont (2004) makes the necessary combinations under the oldest available generic name, Eutrochium Rafinesque. Genus References: Lamont in FNA (2006c); Lamont (2004)=X; Schmidt & Schilling (2000)=Y; Lamont (1995)=Z. Last Updated: 2019-11-29 Publish: 1