Agueweed

noun

1. The common boneset of the United States, Eupatorium perfoliatum.
2. A species of gentian, Gentiana quinqueflora.
3. a gentian of East North America having clusters of bristly blue flowers.
4. a perennial herb of the southeastern U. S. having white-rayed flower heads. It was formerly used in folk medicine.
5. An herb also known as common boneset.