FUSTIC (Fr. fusloc, from Arab. fustuq, Gr. =rw-r&Krl, pistachio) YELLOW  Woos or OLD FusTIC, a dye-stuff consisting of the wood of Chlorophora tinctoria, a large tree of the natural order Moraceae, growing in the West Indies and tropical America . Fustic occurs in commerce in blocks, which are brown without, and of a brownish-yellow within . It is sometimes employed for inlaid work . The dye-stuff termed young fustic or Zante fustic, and also Venetian sumach, is the wood of Rhus cotinus (fustet, or smoke tree), a southern European and Asiatic shrub of the natural order Anacardiaceae, called by Gerarde " red sumach," and apparently the " coccygia " and " cotinus " of Pliny (Nat . Hist. xiii . 41, xvi . 30) . Its colouring matter is fisetin, C15H1006, which was synthesized by S. von Kostanecki (Ber., 1904, 37, p . 384) .