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. 2018 Jul 4;6:e5123. doi: 10.7717/peerj.5123

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©2018 Ardenghi et al.

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.

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The location of each present beaked maize landrace and allied cross is marked by means of a different symbol (see also Table S1). Boundaries of regions are thicker and continue, those of provinces are thinner and dashed; regional administrative centres has been highlighted as well the municipality of Comun Nuovo. The administrative provinces where the presence of beaked maize landraces and their crosses has been recorded either in historical (pre-1990s) or contemporary (post-1990s) times are brightly colored. Map credits: Nicola M.G. Ardenghi.