Distribution of mitochondrial lineages of Natrix helvetica and N. natrix in the study area. The red arrow highlights Baden-Württemberg. The record of the Alpine lineage of N. helvetica in Hesse refers to an introduced grass snake (Kindler et al. 2017).

  Part of: Schultze N, Laufer H, Kindler C, Fritz U (2019) Distribution and hybridisation of barred and common grass snakes (Natrix helvetica, N. natrix) in Baden-Württemberg, South-western Germany. Herpetozoa 32: 229-236. https://doi.org/10.3897/herpetozoa.32.e38897