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. 2014 Feb 5;55:24. doi: 10.1186/1999-3110-55-24

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© Peng et al.; licensee Springer. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Placentations. A. Typical axile placentation (Begonia ravenii C.-I Peng & Y.K. Chen, sect. Diploclinium); B. Septal placentation (B. wuzhishanensis); C. Schematic drawing of septal placentation (adopted from Reitsma, [1984]: Figure 1D).