A new infrageneric classification of Gastrochilus (Orchidaceae: Epidendroideae) based on molecular and morphological data.

IF 48.5 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Nature Pub Date : 2023-08-14 eCollection Date: 2024-07-01 DOI:10.1016/j.pld.2023.08.001

Jun-Yi Zhang, Yue-Hong Cheng, Min Liao, Yu Feng, Sen-Long Jin, Ting-Mei He, Hai He, Bo Xu

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Abstract

Gastrochilus is an orchid genus containing 73 species of mainly epiphytic on trees or rocks in mountain forests of tropical and subtropical Asia. Previous phylogenetic analyses and morphological assessments have failed to produce a well-resolved phylogeny at the infrageneric level. In the present study, a new infrageneric classification of Gastrochilus is proposed based on thoroughly morphological and phylogenetic analyses based on 52 species. Our phylogenetic analysis divided the genus into six sections including three new sections, G. sect. Pseudodistichi, G. sect. Brachycaules and G. sect. Acinacifolii. We also reinstate G. suavis to the specific rank. Furthermore, two new species, G. armeniacus Jun Y. Zhang, B. Xu & Yue H. Cheng and G. minjiangensis Jun Y. Zhang, B. Xu & Yue H. Cheng, are described and illustrated. A key to six sections of the genus is presented.

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基于分子和形态学数据的 Gastrochilus（兰科：表皮树属）新下属分类。

兰花属（Gastrochilus）包含 73 个物种，主要附生在亚洲热带和亚热带山林的树木或岩石上。以往的系统发育分析和形态学评估未能在下属水平上建立一个清晰的系统发育关系。本研究基于对 52 个物种进行的全面形态学和系统发生学分析，提出了一种新的 Gastrochilus 下属分类法。我们的系统发育分析将该属分为六个部分，包括三个新的部分：G. sect.Pseudodistichi, G. sect.Brachycaules 和 G. sect.Achinacifolii。我们还恢复了 G. suavis 的特异等级。此外，我们还描述了两个新种，G. armeniacus Jun Y. Zhang, B. Xu & Yue H. Cheng 和 G. minjiangensis Jun Y. Zhang, B. Xu & Yue H. Cheng，并绘制了插图。还提供了该属六个部分的检索表。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature 综合性期刊-综合性期刊

CiteScore

90.00

自引率

1.20%

发文量

3652

审稿时长

3 months

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