New additions to the exotic vascular flora of Campania (southern Italy).
New data concerning the distribution of 41 non-native species for Campania are presented. Acer saccharinum subsp. saccharinum and Jacaranda mimosifolia are reported for the first time in the Italian peninsula and in continental Italy, respectively. Euphorbia pulcherrima is excluded from Italian exotic flora. Using data from field surveys in Campania the naturalization status of Cenchrus longispinus was also updated. Finally, new sites are given for 37 other alien species previously reported for Campania.