Kus Umbrohi
Põhja-Ameerika | US Department of Agriculture |
Lõuna-Ameerika | Plants of the World Online |
Euroopa | F. Verloove (2016) - Manual of the Alien Plants of Belgium |
UK ja Iirimaa | Online Atlas of the British & Irish Flora |
Vahemere | Plants of the World Online |
Austraalia | R.P. Randall (2007) - The Introduced Flora of Australia and its Weed Status |
Uus-Meremaa | C. Howell (2008) - Consolidated List of Environmental Weeds in NZ |