New distributional records of non-native vascular plants in northern Italy Author Verloove, Filip Botanic Garden of Meise, Nieuwelaan 38, B- 1860 Meise, filip.verloove@br.fgov.be Author Ardenghi, Nicola M. G. Department of Earth and Environmental Sciences, University text Natural History Sciences 2015 2015-06-30 2 1 5 14 http://dx.doi.org/10.4081/nhs.2015.219 journal article 10.4081/nhs.2015.219 2385-0922 12523705 Symphyotrichum squamatum (Spreng.) G.L.Nesom, Phytologia , 77 (1994, 3): 292. 1995. ( Asteraceae ) Naturalized neophyte new to the flora of the province of Alessandria ( Piemonte ) ( Pistarino et al. , 1999 ). ITALY . Piemonte . Prov. Alessandria: Tortona , bridge over river Scrivia , at entrance of A7 motorway, rough, bare ground, 09.09.2014 , F . Verloove 11037 ( BR ) . This South American species is fast spreading and considered invasive in large parts of the Mediterranean area, including Italy ( Celesti-Grapow et al. , 2009a ). In the Piemonte region it was known from Torino and Cuneo provinces ( Pistarino et al. , 1999 ) but not yet from Alessandria.