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. 2015 Sep 2;10(9):e0137190. doi: 10.1371/journal.pone.0137190

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© 2015 Wei et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 4 — A: Apical view of a young flower located terminally on the inflorescence apex. B: Initiation of sepals. C: Initiation of petals. The different petal sizes indicate the initiation sequence. D: Initiation of antesepalous stamens. Arrows indicate the primordia. E, F: Sequential initiation of antepetalous stamens. Arrows indicate the primordia. G: Fully initiated androecium showing different sizes between antesepalous and antepetalous stamens. H: Apical view of a floral bud in the middle stage. I: Initiation of carpels. Arrows indicate the primordia. J: Development of the four carpels at the antepetalous position. K: Later stage of carpel development. L: Part of a nearly mature flower showing the position and different lengths between antesepalous and antepetalous stamens. Abbreviations: S, sepal; P, petal; As, antesepalous stamen; Ap, antepetalous stamen; C, carpel. Scale bars = 40μm.