Hvor Ukrudtsplante
Nordamerika | Weed Science Society of America (2010) - Composite List of Weeds |
Sydamerika | Plants of the World Online |
Rusland | Plants of the World Online |
Australien | B.A. Auld & R.W. Medd (1987) |
New Zealand | C. Howell (2008) - Consolidated List of Environmental Weeds in NZ |