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. 2020 Mar 12;15(3):e0229353. doi: 10.1371/journal.pone.0229353

Fig 4. Subtree of the common European adder.

Fig 4

COI sequences of V. berus allow for an assignment of origin from an inner alpine (blue) or adjacent lowland regions (red). Clades also include sequences from [7], only Austrian samples are displayed on the map.