Dove Un Erbaccia
Europa | NOBANIS - European Network on Invasive Alien Species |
Regno Unito e Irlanda | Online Atlas of the British & Irish Flora |
Africa Meridionale | Plants of the World Online |
Asia Orientale | T. Mito & T. Uesugi (2004) - Invasive Alien Species in Japan |
Australia | B.A. Auld & R.W. Medd (1987) |
Isole del Pacifico | Pacific Island Ecosystems at Risk (PIER) |