| Code | Region | Status | Source | 
						
							
								| Au | Austria with Liechtenstein | cultivated | Reference | 
						
							
								| Au(A) | Austria | introduced: naturalized | Reference | 
						
							
								| Au(L) | Liechtenstein | introduced: adventitious (casual) | Reference | 
						
							
								| Be | Belgium with Luxembourg | introduced | Reference | 
						
							
								| Be | Belgium with Luxembourg | introduced | Reference | 
						
							
								| Be(B) | Belgium | introduced | Reference | 
						
							
								| Br | Great Britain | introduced: naturalized | Reference | 
						
							
								| Bu | Bulgaria | introduced: naturalized | Reference | 
						
							
								| By | Belarus | introduced | Reference | 
						
							
								| Cs | Czech Republic | introduced: naturalized | Reference | 
						
							
								| Da | Denmark with Bornholm | introduced | Reference | 
						
							
								| Es | Estonia | introduced | Reference | 
						
							
								| Fe | Finland with Ahvenanmaa | introduced | Reference | 
						
							
								| Ga | France | introduced: naturalized | Calculated | 
						
							
								| Ga(F) | France | introduced: naturalized | Reference | 
						
							
								| Ge | Germany | introduced: naturalized | Reference | 
						
							
								| Hb | Ireland | introduced: adventitious (casual) | Calculated | 
						
							
								| Hb(E) | Ireland | introduced: adventitious (casual) | Reference | 
						
							
								| Hb(N) | Northern Ireland | introduced: adventitious (casual) | Reference | 
						
							
								| He | Switzerland | introduced | Reference | 
						
							
								| Ho | Netherlands | cultivated | Reference | 
						
							
								| Ho | Netherlands | introduced: reported in error | Reference | 
						
							
								| Hs | Spain | introduced: presence questionable | Calculated | 
						
							
								| Hs(S) | Spain | introduced: presence questionable | Reference | 
						
							
								| Hu | Hungary | introduced: naturalized | Reference | 
						
							
								| It | Italy | cultivated | Reference | 
						
							
								| It | Italy | introduced: naturalized | Reference | 
						
							
								| Ju | Former Jugoslavia | introduced | Reference | 
						
							
								| Ju | Former Jugoslavia | introduced | Calculated | 
						
							
								| La | Latvia | introduced: naturalized | Reference | 
						
							
								| Lt | Lithuania | introduced: naturalized | Reference | 
						
							
								| Mo | Moldova | introduced | Reference | 
						
							
								| No | Norway | introduced: naturalized | Reference | 
						
							
								| Po | Poland | introduced: naturalized | Reference | 
						
							
								| Rf | The Russian Federation | introduced | Calculated | 
						
							
								| Rf(C) | Central European Russia | introduced | Reference | 
						
							
								| Rf(E) | Eastern European Russia | introduced | Reference | 
						
							
								| Rf(K) | Kaliningrad | introduced | Reference | 
						
							
								| Rf(N) | Northern European Russia | introduced | Reference | 
						
							
								| Rf(NW) | Northwest European Russia | introduced | Reference | 
						
							
								| Rm | Romania | introduced | Reference | 
						
							
								| Sk | Slovakia | introduced: naturalized | Reference | 
						
							
								| Sl | Slovenia | introduced | Reference | 
						
							
								| Sr | Serbia including Kosovo and Vojvodina | introduced | Reference | 
						
							
								| Su | Sweden | introduced: naturalized | Reference | 
						
							
								| Uk | Ukraine | introduced | Reference | 
						
							
								| Uk | Ukraine | introduced | Calculated | 
						
							
								| Uk(K) | Crimea | introduced | Reference | 
						
							
								| Uk(U) | Ukraine | introduced | Reference |