A short encyclopedia entry on fustic, a yellow natural dye from the wood of Chlorophora tinctoria (old fustic) of the West Indies and tropical America. It also covers young or Zante fustic from Rhus cotinus, a southern European and Asiatic shrub, whose colouring matter is fisetin. The entry gives the commercial form of the wood, its alternate uses, and cross-references to the article on dyeing.