Phylogenetic and Morphological Analyses Support the Resurrection of Dendroconche and the Recognition of Two New Genera in Polypodiaceae Subfamily Microsoroideae
Phylogenetic and Morphological Analyses Support the Resurrection of Dendroconche and the Recognition of Two New Genera in Polypodiaceae Subfamily Microsoroideae
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DOI：
10.1600/036364419x15650157948607
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发表时间：
2019-08-01
影响因子：
1
通讯作者：
Sundue, Michael
中科院分区：
文献类型：
--
作者：
Testo, Weston L.;Field, Ashley R.;Sundue, Michael
水龙骨科水龙骨亚科的分类存在很大的问题，特别是关于高度可变和非单系的水龙骨属的分类。利用系统发育分析和形态证据，我们证明了16个分类群与这些类群的亲缘关系不是很密切，而是属于三个支系，它们是东半球蚂蚁属Lecanopteris的连续姐妹群。我们将现有的Dendroconche属命名为其中一个分支，并建议使用新属Bosmania和Zetandia来容纳剩余的两个组。我们为每个属提供描述和识别形态同形，在必要时进行新的组合和指定选型，并提出所有相关物种的检索表和描述。我们还讨论了在蜡梅翅目蕨类植物中蚂蚁-蕨类群丛的进化，并强调了在亚科中额外分类工作的必要性。提供了以下新的组合：博斯曼尼亚、B.leandriana、B.mamacea、Dendroconche Ampla、宽叶Dendroconche Ampla、Dendroconche Ampla、D.sayeri、D.scobens、D.varans、Zetandia novae-zelandiae、Z.Powellii、Z.pustulata、Z.pustulata subsp.Howens.和小叶藻Z.vieillardii.
The taxonomy of the Polypodiaceae subfamily Microsoroideae is highly problematic, especially with respect to the circumscription of the highly variable and non-monophyletic genus Microsorum. Using phylogenetic analyses and morphological evidence, we demonstrate that sixteen taxa typically treated in the genera Microsorum and Colysis are not closely related to those groups and instead belong to three clades that are successive sister groups to the Old-World ant-fern genus, Lecanopteris. We use the available genus name Dendroconche for one of these clades and propose the new genera Bosmania and Zealandia to accommodate the remaining two groups. We provide a description and identify morphological synapomorphies for each of the genera, make new combinations and designate lectotypes where necessary, and present keys and descriptions for all relevant species. We also discuss the evolution of ant-fern associations in the lecanopteroid ferns and highlight the need for additional taxonomic work in the subfamily. The following new combinations are provided: Bosmania lastii, B. leandriana, B. membranacea, Dendroconche ampla, D. latilobata, D. linguiforme, D. sayeri, D. scandens, D. varians, Zealandia novae-zealandiae, Z. powellii, Z. pustulata, Z. pustulata subsp. howensis, and Z. vieillardii.