Lettuce and water hyacinth invade Campania.
The water lettuce (Pistia stratiotes) was detected in the wild in Lombardy, Veneto, Emilia Romagna and Tuscany, Italy. In Campania, this weed was initially identified in the municipality of Villa Literno in the province of Caserta, but has since spread rapidly in rivers not far from the mouth of the southern sector of the alluvial plain of the Volturno, where it is invasive. Its current distribution area in Campania includes Castel Volturno, Villa Literno and Giugliano. Water hyacinth (Eichhornia crassipes) is currently distributed in Lombardia, Friuli-Venezia Giulia, Emilia Romagna, Tuscany, Lazio and Sicily. At the end of 2010, this weed was also found in Sardinia (Oristano, Cabras) and Campania (municipality of Castel Volturno bordering Villa Literno in Caserta). The morphology, monitoring, spread and management (mainly through cultural and biological control) of both weeds are described.