1. Gentian of eastern North America having clusters of bristly blue flowers
   - ague weed, five-flowered gentian, stiff gentian, Gentianella quinquefolia, Gentiana quinquefolia 
2. Perennial herb of southeastern United States having white-rayed flower heads; formerly used as in folk medicine
   - boneset, thoroughwort, Eupatorium perfoliatum

Derived forms: agueweeds, ague weeds

Type of: gentian, herb, herbaceous plant

Part of: Eupatorium, Gentianella, genus Eupatorium, genus Gentianella

Encyclopedia: Agueweed

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