| Code | Region | Status | Source |
| Au |
Austria with Liechtenstein |
native |
Calculated
|
| Au(A) |
Austria |
native |
Calculated
|
| Bu |
Bulgaria |
native |
Calculated
|
| Ct |
Croatia |
native: reported in error |
Calculated
|
| Fe |
Finland with Ahvenanmaa |
introduced: reported in error |
Calculated
|
| Ge |
Germany |
introduced: reported in error |
Calculated
|
| Hu |
Hungary |
native |
Calculated
|
| Ju |
Former Jugoslavia |
native |
Calculated
|
| Mk |
The former Jugoslav Republic of Makedonija |
native |
Calculated
|
| No |
Norway |
introduced |
Calculated
|
| Rf |
The Russian Federation |
introduced |
Calculated
|
| Rf(NW) |
Northwest European Russia |
introduced |
Calculated
|
| Rm |
Romania |
native |
Calculated
|
| Sk |
Slovakia |
native |
Calculated
|
| Sl |
Slovenia |
native |
Calculated
|
| Sr |
Serbia including Kosovo and Vojvodina |
native |
Calculated
|
| Uk |
Ukraine |
native |
Calculated
|
| Uk(U) |
Ukraine |
native |
Calculated
|