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. 2019 Feb 26;9:2752. doi: 10.1038/s41598-019-39308-w

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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(A) Overview of the sampling sites within the distribution area of A. angustifolia. Different symbols correspond to the genetic groups identified after data analysis: red stars represent populations comprising the Northern group, blue circles represent populations comprising the Central group and yellow pentagons represent populations comprising the Southern group. (B) Bayesian phylogenetic tree of the 39 populations of A. angustifolia. Red branches correspond to individuals from populations of the Northern group; green branches correspond to individuals from populations of the Central group; blue branches correspond to individuals from populations of the Southern group.