| Code | Region | Status | Source |
| Au |
Austria with Liechtenstein |
native |
Reference
|
| Au(A) |
Austria |
native |
Reference
|
| Au(L) |
Liechtenstein |
native: presence questionable |
Reference
|
| Br |
Great Britain |
introduced: naturalized |
Reference
|
| Br |
Great Britain |
native |
Reference
|
| By |
Belarus |
native |
Reference
|
| Cs |
Czech Republic |
native |
Reference
|
| Ct |
Croatia |
native |
Reference
|
| Da |
Denmark with Bornholm |
native |
Reference
|
| Es |
Estonia |
native |
Reference
|
| Es |
Estonia |
native |
Reference
|
| Fe |
Finland with Ahvenanmaa |
native |
Reference
|
| Ga |
France |
introduced |
Reference
|
| Ga |
France |
introduced: adventitious (casual) |
Reference
|
| Ge |
Germany |
native |
Reference
|
| Gr |
Greece |
native: presence questionable |
Reference
|
| Hb |
Ireland |
introduced: adventitious (casual) |
Calculated
|
| Hb(E) |
Ireland |
introduced: adventitious (casual) |
Reference
|
| Hb(N) |
Northern Ireland |
introduced: adventitious (casual) |
Reference
|
| He |
Switzerland |
native |
Reference
|
| Ho |
Netherlands |
native |
Reference
|
| Hs |
Spain |
native: presence questionable |
Reference
|
| Hu |
Hungary |
native: presence questionable |
Reference
|
| Is |
Iceland |
introduced: adventitious (casual) |
Reference
|
| It |
Italy |
native: doubtfully native |
Reference
|
| Ju |
Former Jugoslavia |
native: presence questionable |
Reference
|
| Ju |
Former Jugoslavia |
native |
Calculated
|
| La |
Latvia |
native |
Reference
|
| Lt |
Lithuania |
native |
Reference
|
| Lu |
Portugal |
native: presence questionable |
Reference
|
| Mo |
Moldova |
native |
Reference
|
| No |
Norway |
native |
Reference
|
| Po |
Poland |
introduced: naturalized |
Reference
|
| Po |
Poland |
native |
Reference
|
| Rf |
The Russian Federation |
native |
Calculated
|
| Rf(C) |
Central European Russia |
native |
Reference
|
| Rf(E) |
Eastern European Russia |
native |
Reference
|
| Rf(K) |
Kaliningrad |
native |
Reference
|
| Rf(N) |
Northern European Russia |
native |
Reference
|
| Rf(NW) |
Northwest European Russia |
native |
Reference
|
| Rm |
Romania |
native: presence questionable |
Reference
|
| Si(M) |
Malta |
introduced |
Reference
|
| Si(M) |
Malta |
native: reported in error |
Reference
|
| Sk |
Slovakia |
introduced: naturalized |
Reference
|
| Sl |
Slovenia |
native |
Reference
|
| Su |
Sweden |
native |
Reference
|
| Tu |
Turkey |
native: presence questionable |
Calculated
|
| Tu(A) |
Asiatic Turkey |
native: presence questionable |
Reference
|
| Tu(E) |
Turkey-in-Europe |
native: presence questionable |
Reference
|
| Uk |
Ukraine |
native: doubtfully native |
Calculated
|
| Uk(U) |
Ukraine |
native: doubtfully native |
Reference
|