| Code | Region | Status | Source | 
						
							
								| AE | East Aegean Islands | introduced: naturalized | Calculated | 
						
							
								| AE(G) | Greek East Aegean Islands | introduced: naturalized | Reference | 
						
							
								| Al | Albania | introduced | Reference | 
						
							
								| Ar | Armenia | introduced | Reference | 
						
							
								| Be | Belgium with Luxembourg | introduced: adventitious (casual) | Reference | 
						
							
								| Be(B) | Belgium | introduced: adventitious (casual) | Reference | 
						
							
								| Be(L) | Luxembourg | introduced: adventitious (casual) | Reference | 
						
							
								| BH | Bosnia-Herzegovina | introduced: naturalized | Reference | 
						
							
								| Bl | Baleares | introduced | Calculated | 
						
							
								| Bl(M) | Mallorca | introduced | Reference | 
						
							
								| Br | Great Britain | introduced: adventitious (casual) | Reference | 
						
							
								| Ca | Canary Is. | introduced: naturalized | Calculated | 
						
							
								| Ca(C) | Gran Canaria | introduced: naturalized | Reference | 
						
							
								| Ca(G) | Gomera | introduced: naturalized | Reference | 
						
							
								| Ca(P) | La Palma | introduced: naturalized | Reference | 
						
							
								| Ca(T) | Tenerife | introduced: naturalized | Reference | 
						
							
								| Cg | Montenegro | introduced: naturalized | Reference | 
						
							
								| Co | Corse | introduced: adventitious (casual) | Reference | 
						
							
								| Cr | Kriti with Karpathos, Kasos & Gavdhos | introduced: naturalized | Reference | 
						
							
								| Ct | Croatia | introduced | Reference | 
						
							
								| Ct | Croatia | introduced: adventitious (casual) | Reference | 
						
							
								| Cy | Cyprus | introduced | Reference | 
						
							
								| Cy | Cyprus | introduced: naturalized | Reference | 
						
							
								| Eg | Egypt | introduced: naturalized | Reference | 
						
							
								| Ga | France | introduced: adventitious (casual) | Calculated | 
						
							
								| Ga(F) | France | introduced: adventitious (casual) | Reference | 
						
							
								| Gg | Georgia | introduced: naturalized | Reference | 
						
							
								| Gr | Greece | introduced | Reference | 
						
							
								| Hs | Spain | introduced: naturalized | Calculated | 
						
							
								| Hs(S) | Spain | introduced: naturalized | Reference | 
						
							
								| Hu | Hungary | introduced: adventitious (casual) | Reference | 
						
							
								| IJ | Israel-Jordan | introduced: adventitious (casual) | Calculated | 
						
							
								| Ir | Israel | introduced: adventitious (casual) | Reference | 
						
							
								| It | Italy | introduced: naturalized | Reference | 
						
							
								| Ju | Former Jugoslavia | introduced: naturalized | Reference | 
						
							
								| Ju | Former Jugoslavia | introduced: naturalized | Calculated | 
						
							
								| Le | Lebanon | introduced: naturalized | Reference | 
						
							
								| LS | Lebanon-Syria | introduced: naturalized | Calculated | 
						
							
								| Ma | Morocco | introduced: adventitious (casual) | Reference | 
						
							
								| Md | Madeira | introduced: adventitious (casual) | Calculated | 
						
							
								| Md(M) | Madeira | introduced: adventitious (casual) | Reference | 
						
							
								| Mk | The former Jugoslav Republic of Makedonija | introduced: naturalized | Reference | 
						
							
								| No | Norway | introduced: adventitious (casual) | Reference | 
						
							
								| Rf | The Russian Federation | introduced | Calculated | 
						
							
								| Rf(E) | Eastern European Russia | introduced | Reference | 
						
							
								| Si(S) | Sicily | introduced: naturalized | Reference | 
						
							
								| Sl | Slovenia | introduced | Reference | 
						
							
								| Sy | Syria | introduced: naturalized | Reference | 
						
							
								| Tcs | Transcaucasia (Azerbaijan, Armenia, and Georgia) | introduced: naturalized | Calculated | 
						
							
								| Tu | Turkey | introduced | Calculated | 
						
							
								| Tu(A) | Asiatic Turkey | introduced | Reference |