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.