Online Google Dictionary

ageratum 中文解釋 wordnet sense Collocation Usage Collins Definition
  1. mistflower: rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; sometimes placed in genus Eupatorium
  2. any plant of the genus Ageratum having opposite leaves and small heads of blue or white flowers
  3. Ageratum (A-gé-ra-tum), known as Whiteweed, is a genus of 40 to 60 tropical American herbs, annuals and perennials from the Sunflower family Asteraceae, tribe Eupatorieae.