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n. Any of various New World plants of the genus Ageratum in the composite family, especially A. houstonianum, having showy, colorful flower heads.

n. Any of several other plants having flower clusters similar to the ageratum.

n. Any of the genus Ageratum of tropical American herbs, annuals and perennials, from the sunflower family Asteraceae, tribe Eupatorieae; they are sometimes used in floral displays.

n. A genus of plants, natural order Compositæ, all American and chiefly tropical, nearly allied to Eupatorium.

n. rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; sometimes placed in genus Eupatorium

n. any plant of the genus Ageratum having opposite leaves and small heads of blue or white flowers

"A Fight for Flower Power Andy McMillan for The Wall Street Journal Dahlinova Dahlias at Metrolina Greenhouses in Huntersville, N.C. More photos and interactive graphics This year, Home Depot is touting an exclusive "Stellar Blue" ageratum, or floss flower, that hides faded blooms as it grows, requiring less clipping."

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Nasturtium    viewspider    cornel    eucalypti    phlox