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具误导性的果实:金合欢亚科和含羞草亚科的非单系性支持了分类的重新界定以及含羞草类豆科植物中的一个新属。

Misleading fruits: The non-monophyly of and supports generic re-circumscriptions and a new genus within mimosoid legumes.

作者信息

Borges Leonardo M, Inglis Peter W, Simon Marcelo F, Ribeiro Pétala Gomes, de Queiroz Luciano P

机构信息

Universidade Federal de São Carlos, Departamento de Botânica, Rodovia Washington Luís, Km 235, São Carlos, SP, 13565-905, Brazil Universidade Federal de São Carlos São Carlos Brazil.

Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, Caixa Postal 02372, Brasília, DF, 70770-917, Brazil Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica Brasília Brazil.

出版信息

PhytoKeys. 2022 Aug 22;205:239-259. doi: 10.3897/phytokeys.205.82275. eCollection 2022.

Abstract

Generic delimitation in and allies (mimosoid legumes) has been in a state of flux, particularly caused by over-reliance on fruit and seed morphology to segregate species out of into the genera , and . Although supporting their segregation from , previous phylogenetic analyses suggested that some of these segregated genera are not monophyletic. Here, we test the monophyly of , and with dense taxon sampling across these genera, including the type species of each genus. Our analysis recovers as monophyletic, but places species in two distinct lineages, one of which includes all three species of . Given that the type species of both and are nested in the same clade, we subsume under the older name . The remaining species are assigned to the new genus . Alongside high molecular phylogenetic support, recognition of , and as distinct genera is also supported by combinations of morphological traits, several of which were previously overlooked.

摘要

含羞草亚科及其近缘类群(含羞草科豆科植物)的类属划分一直处于变动状态,尤其是过度依赖果实和种子形态来将含羞草亚科中的物种划分到金合欢属、银合欢属和朱缨花属。尽管之前的系统发育分析支持将它们从含羞草亚科中分离出来,但表明其中一些分离出的属并非单系类群。在此,我们通过对这些属进行密集的分类群抽样,包括每个属的模式种,来检验金合欢属、银合欢属和朱缨花属的单系性。我们的分析确认金合欢属是单系类群,但将银合欢属的物种置于两个不同的谱系中,其中一个谱系包含银合欢属的所有三个物种。鉴于银合欢属和朱缨花属的模式种都嵌套在同一个分支中,我们将银合欢属归入较早的名称下。其余的银合欢属物种被归入新属。除了有高度的分子系统发育支持外,金合欢属、银合欢属和朱缨花属作为不同属的认定也得到形态特征组合的支持,其中一些形态特征此前被忽视了。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87d5/9849003/2401995fdb53/phytokeys-205-239_article-82275__-g001.jpg

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