|
|
| genus of tropical American herbs grown for their flowers ❲Ageratum❳ | ||||
|
|
| rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; sometimes placed in genus Eupatorium ❲Conoclinium coelestinum, Eupatorium coelestinum❳ | ||||
|
|
| any plant of the genus Ageratum having opposite leaves and small heads of blue or white flowers |