ageratum

Etymology
From the genus name.

Noun

 * 1) Any of the genus  of tropical American herbs, annuals and perennials, from the sunflower family, tribe ; they are sometimes used in floral displays.
 * 2) * 1888,, Bonaventure, New York: Scribner, “Grande Pointe,” Chapter2, pp.77-78,
 * The way before him was little more than a bridle-path along the earth . The soft blue tufts of the ageratum were on each side continually.

Translations

 * Catalan: agèrat
 * Italian: agerato
 * Portuguese: