New plants in the urban green of the city of Palermo (N-Sicily)

Over 30 years of censuses and observations, conducted in particular in the city of Palermo, have made it possible to acquire a huge amount of data on the floristic component of both public and private parks and gardens, as well as squares and streets of the Sicilian capital. It is enough to go through the index of the "Quaderni di Botanica Ambientale e Applicata", since the first issue published in 1990, to get an idea of what has been done and the results achieved. In addition to the articles, there are also numerous contributions presented in the form of cards in the series "Schede per la flora ornamentale siciliana" curated by P. Mazzola and F.M. Raimondo. In consideration of the scientific, ecological and social value that urban greenery is increasingly assuming, not only for the well-being of citizens, the preparation of a catalogue has been started in which to summarize the taxonomic, phytogeographical and distributive data of arboreal and shrubby plants and succulents registered over the years and still to be registered in the city of Palermo. This contribution is part of this project, in which some new floristic findings are reported to be added to the data already acquired and published. To date, numerous taxa are unpublished for the city of Palermo and partly for the regional and national territory, including: Archontophoenix alexandrae H. Wendl. & Drude [Arecaceae], A. cunninghamiana (H.Wendl.) H. Wendl. & Drude [Arecaceae], Cordia francisci Ten. [Boraginaceae], Ficus australis Willd. [Moraceae], F. lyrata Warb. [Moraceae], Howea belmoreana (C.Moore & F.Muell.) Becc. [Arecaceae], Metrosideros spectabilis Sol. ex Gaertn. [ Myrtaceae]. The authors report the complete list of unpublished woody taxa together with the corresponding retrieval data in the urban context of the Sicilian capital.