Chromolaena odorata is also known as Jack in the Bush. It is a tropical and subtropical species of flowering shrub in the family Asteraceae. It is native to the Americas, from Florida and Texas in the United States south through Mexico and the Caribbean to South America. It has been introduced to tropical Asia, West Africa, and parts of Australia.

Common names include Siam weed, rouge plant, Christmas bush, jack in the box, devil weed, common floss flower, hagunoy (Cebuano language), rompe saragüey (Spanish), Abani di egwu or Nsiibilibe (Igbo language), ewé Akíntọ́lá (Yorùbá) and triffid.