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. 2016 Jan 22;16:20. doi: 10.1186/s12862-016-0587-2

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© Li et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Maps of the hybrid zone between V. atratum and V. japonicum and of morphologically ‘pure’ V. atratum populations. a Map of Japan showing locations of the hybrid zone and morphologically ‘pure’ V. atratum populations (filled red cube) and V. japonicum populations (filled green circles). b, c Detailed map of the hybrid zones showing the putative hybrid sampling sites (blue diamond). Additional details for each population are shown in Additional file 1: Table S1