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. 2015 May 20;5:10098. doi: 10.1038/srep10098

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Copyright © 2015, Macmillan Publishers Limited

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Phylogenetic relationship and photographs of Ranunculus species used in this study. The divergence times are given in millions of years. The plant and habitat photographs were taken by Ling-Yun Chen.