Nordamerika | Weed Science Society of America (2010) - Composite List of Weeds |
Mellemamerika | Plants of the World Online |
Sydamerika | Inter-American Biodiversity Information Network |
Europa | NOBANIS - European Network on Invasive Alien Species |
UK og Irland | Online Atlas of the British & Irish Flora |
Middelhavet | Plants of the World Online |
Sydlige Afrika | T. Rebelo & C.L. Ramjukadh (2012) - SANBI |
Øst Asien | T. Mito & T. Uesugi (2004) - Invasive Alien Species in Japan |
Rusland | NOBANIS - European Network on Invasive Alien Species |
Centralasien | Plants of the World Online |
Mellemøsten | Plants of the World Online |
Australien | Australian Government - Weeds in Australia |
New Zealand | NZ Plant Conservation Network |
