Genus: Eupatorium — thoroughwort
The genus Eupatorium has been divided into three genera: Ageratina, Eutrochium, and a more narrowly defined Eupatorium. Reference: Siripun and Schilling (2006).
Family
This genus’s species in New England
- Eupatorium album
 - Eupatorium altissimum
 - Eupatorium hyssopifolium
 - Eupatorium novae-angliae
 - Eupatorium perfoliatum
 - Eupatorium pilosum
 - Eupatorium pubescens
 - Eupatorium rotundifolium
 - Eupatorium serotinum
 - Eupatorium sessilifolium
 - Eupatorium torreyanum
 
Visit this genus in the Dichotomous Key

![Fruits: Eupatorium album. ~ By Arthur Haines. ~ Copyright © 2025 Arthur Haines. ~ arthur.d.haines[at]gmail.com](https://newfs.s3.amazonaws.com/taxon-images-239x239/Asteraceae/eupatorium-album-fr-ahaines.jpg)