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首页> 外文期刊>Flora >A revision of the Ceratozamia miqueliana (Zamiaceae) species complex based on analyses of leaflet anatomical characters
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A revision of the Ceratozamia miqueliana (Zamiaceae) species complex based on analyses of leaflet anatomical characters

机译：基于传单解剖特征分析的Ceratozamia Miqueliana（Zamiaceae）物种复合物修订

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摘要

The Ceratozamia miqueliana species complex consists of six closely related species that exhibit similar gross morphology, but a wide range of leaflet shape from widely obovate in C. euryphyllidia and C. hondurensis to oblanceolate in C. zoquorum. However, despite the clear leaflet size variation, the taxon delimitation within the complex has been suggested to be uncertain when considering other traits, giving rise to doubts about the taxonomic validity of taxa, particularly of C. becerrae. Previous studies have shown that anatomical traits might be effective diagnostic characters to delimitate closely related cycad species. This study reviewed the anatomical variation of the Ceratozamia miqueliana species complex. We provide taxonomic treatment in the basis of anatomical trait variation. Although the six species occupy relatively mesic environments in tropical rainforest habitats, we found that some species exhibited leaflet anatomical traits associated to water stressed environments, suggesting historical adaptation to xeric conditions. The anatomical trait variation presented in this study agrees with a recent molecular phylogenetic study, clears up doubts on species relationships in the C. miqueliana complex, and validates the taxonomic recognition of C. becerrae.
机译：Ceratozamia Miqueliana物种复合体由六种密切相关的物种组成，表现出类似的总体形态，但从C. euryphyllidia和C.冈苏斯州的C. ouryphidia和C. obonolate的广泛卵形卵形卵泡的各种传单形状。然而，尽管传单尺寸变化明显，但复杂内的分类划界已经建议在考虑其他特征时不确定，从而引起若干分类群的分类学有效性，尤其是C. BecErrae的疑虑。以前的研究表明，解剖性状性状可能是有效的诊断性状，以缩小密切相关的Cycad物种。该研究综述了Cratozamia Miqueliana物种复合物的解剖变化。我们根据解剖性状变异提供分类治疗。虽然六种物种在热带雨林栖息地中占据了相对迷人的环境，但我们发现一些物种表现出与水压力环境相关的传单解剖性状，表明对Xeric条件的历史适应。本研究提出的解剖性特性变异与最近的分子系统发育研究同意，在C. miqueliana综合体中清除了物种关系的怀疑，并验证了C. becerrae的分类识别。

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