ageratum meaning and definition

AGERATUM noun

Definition of ageratum (noun)

1. rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; sometimes placed in genus Eupatorium
   • synonyms: Conoclinium coelestinum, Eupatorium coelestinum, mistflower, mist-flower
2. any plant of the genus Ageratum having opposite leaves and small heads of blue or white flowers