Regional Morphology
This is relevant for Vipers in Europe.
Morphological identification key
| Viperinae |
Vipera sp. ("European vipers of the genus Vipera"). In Bulgaria, European Turkey and Greece (mainland) possibly also: Vipera xanthina. On the Greek islands Milos, Kimolos, Polynos and Siphnos: Macrovipera schweizeri. |