eupatorium capillifolium
Also found in: Dictionary, Thesaurus, Wikipedia.
mayweed
mayweed
A bad-smelling daisy-like flower. Although the whole plant is useable in small amounts, it may cause allergies or vomiting. It has high levels of pyrrolizidine, which damages the liver. Said to be used for colds, flu and headaches. Be careful. Safer to use externally.