Donde un Mala Hierba
América del Norte | US Department of Agriculture |
América del Sur | Plants of the World Online |
Europa | F. Verloove (2016) - Manual of the Alien Plants of Belgium |
Reino Unido e Irlanda | Online Atlas of the British & Irish Flora |
Mediterráneo | Plants of the World Online |
Australia | R.P. Randall (2007) - The Introduced Flora of Australia and its Weed Status |
Nueva Zelanda | C. Howell (2008) - Consolidated List of Environmental Weeds in NZ |