Dove Un Erbaccia
Nord America | Weed Science Society of America (2010) - Composite List of Weeds |
Europa | NOBANIS - European Network on Invasive Alien Species |
Asia Centrale | Plants of the World Online |
Australia | R.P. Randall & O. Kessal (2004) |
Nuova Zelanda | C. Howell (2008) - Consolidated List of Environmental Weeds in NZ |