| Code | Region | Status | Source |
| Ab |
Azerbaijan |
native |
Calculated
|
| Ab(A) |
Azerbaijan |
native |
Reference
|
| Ab(N) |
Nakhichevan |
native |
Reference
|
| AE |
East Aegean Islands |
native |
Calculated
|
| AE |
East Aegean Islands |
native |
Reference
|
| AE(G) |
Greek East Aegean Islands |
native |
Reference
|
| Ag |
Algeria |
native |
Reference
|
| Ar |
Armenia |
native |
Reference
|
| Au |
Austria with Liechtenstein |
native |
Reference
|
| Au(A) |
Austria |
native |
Reference
|
| Be |
Belgium with Luxembourg |
native |
Reference
|
| Be(B) |
Belgium |
native |
Reference
|
| Be(L) |
Luxembourg |
native |
Reference
|
| BH |
Bosnia-Herzegovina |
native |
Reference
|
| Bl |
Baleares |
native: presence questionable |
Calculated
|
| Bl |
Baleares |
native |
Reference
|
| Bl(M) |
Mallorca |
native: presence questionable |
Reference
|
| Br |
Great Britain |
native |
Reference
|
| Bu |
Bulgaria |
native |
Reference
|
| Ca |
Canary Is. |
native: doubtfully native |
Calculated
|
| Ca |
Canary Is. |
native |
Reference
|
| Ca(C) |
Gran Canaria |
native: doubtfully native |
Reference
|
| Ca(G) |
Gomera |
native: doubtfully native |
Reference
|
| Ca(H) |
Hierro |
native: doubtfully native |
Reference
|
| Ca(L) |
Lanzarote with Graciosa |
native: doubtfully native |
Reference
|
| Ca(P) |
La Palma |
native: doubtfully native |
Reference
|
| Ca(T) |
Tenerife |
native: doubtfully native |
Reference
|
| Cg |
Montenegro |
native |
Reference
|
| Co |
Corse |
native |
Reference
|
| Cr |
Kriti with Karpathos, Kasos & Gavdhos |
native: presence questionable |
Reference
|
| Cs |
Czech Republic |
native |
Reference
|
| Cs |
Czech Republic |
native |
Reference
|
| Ct |
Croatia |
native |
Reference
|
| Da |
Denmark with Bornholm |
native |
Reference
|
| Es |
Estonia |
native |
Reference
|
| Ga |
France |
native |
Calculated
|
| Ga(C) |
Channel Is. |
native |
Reference
|
| Ga(F) |
France |
native |
Reference
|
| Ge |
Germany |
native |
Reference
|
| Gg |
Georgia |
native |
Reference
|
| Gg |
Georgia |
native |
Calculated
|
| Gg(D) |
Adzaria |
native |
Reference
|
| Gg(G) |
Georgia |
native |
Reference
|
| Gr |
Greece |
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 |
Reference
|
| IJ |
Israel-Jordan |
native: reported in error |
Reference
|
| It |
Italy |
native |
Reference
|
| Ju |
Former Jugoslavia |
native |
Reference
|
| Ju |
Former Jugoslavia |
native |
Calculated
|
| Lu |
Portugal |
native |
Reference
|
| Ma |
Morocco |
native: reported in error |
Reference
|
| Mo |
Moldova |
native |
Reference
|
| Po |
Poland |
native |
Reference
|
| Rf |
The Russian Federation |
native |
Calculated
|
| Rf(C) |
Central European Russia |
native |
Reference
|
| Rf(CS) |
North Caucasus |
native |
Reference
|
| Rf(E) |
Eastern European Russia |
native |
Reference
|
| Rf(S) |
South European Russia |
native |
Reference
|
| Rm |
Romania |
native |
Reference
|
| Si(S) |
Sicily |
native: presence questionable |
Reference
|
| Sk |
Slovakia |
native |
Reference
|
| Sl |
Slovenia |
native |
Reference
|
| Sr |
Serbia including Kosovo and Vojvodina |
native |
Reference
|
| Su |
Sweden |
introduced |
Reference
|
| Tcs |
Transcaucasia (Azerbaijan, Armenia, and Georgia) |
native |
Calculated
|
| Tu |
Turkey |
native |
Calculated
|
| Tu(A) |
Asiatic Turkey |
native |
Reference
|
| Tu(E) |
Turkey-in-Europe |
native |
Reference
|
| Uk |
Ukraine |
native |
Reference
|
| Uk |
Ukraine |
native |
Calculated
|
| Uk(K) |
Crimea |
native |
Reference
|