The vascular flora of the Royal Park of Portici (Naples, Italy).
To extend our floristic knowledge of the Vesuvian area and, more generally, of Campania region, we carried out a botanical survey of the Royal Park of Portici (Naples, Italy). The inventory we obtained features 449 taxa, including 108 new taxa for the Somma-Vesuvius complex and 13 species are new to the Campania region. 50 previously recorded taxa were not retrieved. An analysis of life forms and phytochorological spectra showed that the flora is dominated by Therophytes (42.8%) and Mediterranean species s. 1. (41.7%). The high number of Alien species (17.6%) and the low number of Endemics (1.1%) confirm the occurrence of extensive human disturbance.