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boneset, agueweed, thoroughwort, Eupatorium perfoliatum | perennial herb of southeastern United States having white-rayed flower heads; perennial herb of southeastern United States having white-rayed flower heads; formerly used as in folk medicine ❲Eupatorium perfoliatum❳ | ||
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agueweed, ague weed, five-flowered gentian, stiff gentian, Gentianella quinquefolia, Gentiana quinquefolia | gentian of eastern North America having clusters of bristly blue flowers ❲Gentianella quinquefolia, Gentiana quinquefolia❳ |