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<p><i>Epilobium</i> is known as a complex genus with about 200 species showing disparity in almost all features such as morphology, anatomy, cytology, pollen, and ecology. In a search for taxonomically important and effective characteristics, we studied seed and pollen micromorphological features of 18 <i>Epilobium</i> species occurring in Iran. We also tried to shed light on these traits’ evolution and changes over a phylogenetic tree. Clustering showed that these features are of taxonomic value and can be used in species differentiation. PCA identified discriminating characteristics, while character mapping and morphospace plots identified characteristics involved in <i>Epilobium</i> speciation. The rates of change in different features varied in the studied species; however, many changes observed were associated with environmental coordinates.</p>

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Seed and pollen disparity and speciation in the genus Epilobium of the Onagraceae family

  • 期刊论文

  • 发表日期：

    2025年8月27日

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  • Masoud Seidai,
  • Sedigheh Rahimi,
  • Fahimeh Koohdar,
  • Ahmad-Reza Mehrabian

摘要

Epilobium is known as a complex genus with about 200 species showing disparity in almost all features such as morphology, anatomy, cytology, pollen, and ecology. In a search for taxonomically important and effective characteristics, we studied seed and pollen micromorphological features of 18 Epilobium species occurring in Iran. We also tried to shed light on these traits’ evolution and changes over a phylogenetic tree. Clustering showed that these features are of taxonomic value and can be used in species differentiation. PCA identified discriminating characteristics, while character mapping and morphospace plots identified characteristics involved in Epilobium speciation. The rates of change in different features varied in the studied species; however, many changes observed were associated with environmental coordinates.