1. Cotinus coggygria Scop. (syn.: Rhus cotinus L.) (S-Eur., W-As.) – A very rare and probably always ephemeral escape from cultivation. Found in 1957 on the verge of an estate in Lustin and by a railway track in the port of Antwerpen (N-side of Churchilldok) in 2001, twice in the vicinity of planted specimens. In 2011 also recorded in coastal dunes (Noordduinen) in Koksijde (a single shrub, possibly a mere relic of cultivation?). Previously said to be naturalised by van Rompaey & Delvosalle (1978) but their single record is not located in Belgium.
Cotinus coggygria might increase in a near future as a result of more favourable climatological conditions. In parts of Germany it has been able to naturalise in thermophilous river valleys (Schlüter 1993, Klauck 2011).
Selected literature:
Klauck E.-J. (2011) Beitrag zur Kenntnis der Cotinus coggygria-Gebüsche. Mainzer naturwiss. Archiv 48: 249-258.
Schlüter H. (1993) Zur Einbürgerung des Perückenstrauches (Cotinus coggygria Scop.) an einem xerothermen Muschelkalkhang bei Jena in Thüringen. Phytocoenologia 23: 637-650.