Definitions for "Eupatorium"
A genus of perennial, composite herbs including hemp agrimony, boneset, throughwort, etc.
large genus of chiefly tropical herbs having heads of white or purplish flowers
Eupatorium (syn. Ayapana Spach) is a genus of flowering plants, depending on the classification system containing from 36 to 60 species, most of which are herbaceous perennial plants growing to 0.5-3 m tall, but a few are shrubs. The genus is native to temperate regions of the Northern Hemisphere.