| Code | Region | Status | Source | 
						
							
								| AE | East Aegean Islands | native: presence questionable | Calculated | 
						
							
								| AE(G) | Greek East Aegean Islands | native: presence questionable | Reference | 
						
							
								| Al | Albania | native | Reference | 
						
							
								| Au | Austria with Liechtenstein | native | Reference | 
						
							
								| Au(A) | Austria | native | Reference | 
						
							
								| Az | Azores | native: doubtfully native | Calculated | 
						
							
								| Az(C) | Corvo | native: doubtfully native | Reference | 
						
							
								| Az(F) | Faial | native: doubtfully native | Reference | 
						
							
								| Az(G) | Graciosa | native: doubtfully native | Reference | 
						
							
								| Az(J) | São Jorge | native: doubtfully native | Reference | 
						
							
								| Az(L) | Flores | native: doubtfully native | Reference | 
						
							
								| Az(M) | São Miguel | native: doubtfully native | Reference | 
						
							
								| Az(P) | Pico | native: doubtfully native | Reference | 
						
							
								| Az(S) | Santa Maria | native: doubtfully native | Reference | 
						
							
								| Az(T) | Terceira | native: doubtfully native | Reference | 
						
							
								| Be | Belgium with Luxembourg | native | Reference | 
						
							
								| Be(L) | Luxembourg | native | Reference | 
						
							
								| Bl | Baleares | native: reported in error | Reference | 
						
							
								| Br | Great Britain | native | Reference | 
						
							
								| Bu | Bulgaria | native | Reference | 
						
							
								| By | Belarus | native | Reference | 
						
							
								| Co | Corse | native | Reference | 
						
							
								| Cs | Czech Republic | native | Reference | 
						
							
								| Ct | Croatia | native | Reference | 
						
							
								| Da | Denmark with Bornholm | introduced | Reference | 
						
							
								| EM | Euro+Med | endemic for EM | Reference | 
						
							
								| Ga | France | native | Calculated | 
						
							
								| Ga(C) | Channel Is. | native | Reference | 
						
							
								| Ga(F) | France | native | Reference | 
						
							
								| Ge | Germany | native | Reference | 
						
							
								| Gr | Greece | native | Reference | 
						
							
								| Hb | Ireland | native | Reference | 
						
							
								| Hb | Ireland | native | Calculated | 
						
							
								| Hb(E) | Ireland | native | Reference | 
						
							
								| Hb(N) | Northern Ireland | native | Reference | 
						
							
								| He | Switzerland | native | Reference | 
						
							
								| Ho | Netherlands | native | Reference | 
						
							
								| Hs | Spain | native | Reference | 
						
							
								| Hs | Spain | native | Calculated | 
						
							
								| Hs(S) | Spain | native | Reference | 
						
							
								| Hu | Hungary | native: formerly native | Reference | 
						
							
								| It | Italy | native | Reference | 
						
							
								| Ju | Former Jugoslavia | native | Reference | 
						
							
								| Ju | Former Jugoslavia | native | Calculated | 
						
							
								| Lu | Portugal | native | Reference | 
						
							
								| Po | Poland | native | Reference | 
						
							
								| Rm | Romania | native | Reference | 
						
							
								| Sa | Sardegna | native: reported in error | Reference | 
						
							
								| Si(S) | Sicily | native: reported in error | Reference | 
						
							
								| Sk | Slovakia | native | Reference | 
						
							
								| Sl | Slovenia | native | Reference | 
						
							
								| Su | Sweden | introduced | Reference | 
						
							
								| Tu | Turkey | native | Calculated | 
						
							
								| Tu(E) | Turkey-in-Europe | native | Reference | 
						
							
								| Uk | Ukraine | introduced: adventitious (casual) | Calculated | 
						
							
								| Uk(K) | Crimea | introduced: adventitious (casual) | Reference |