A revision of Dryopteris sect. Diclisodon (Dryopteridaceae) based on morphological and molecular evidence with description of a new species

doi:10.1016/j.pld.2021.09.005

Plant Diversity ›› 2022, Vol. 44 ›› Issue (02): 181-190.DOI: 10.1016/j.pld.2021.09.005

A revision of Dryopteris sect. Diclisodon (Dryopteridaceae) based on morphological and molecular evidence with description of a new species

Zheng-Yu Zuo^a,b, Ting Zhao^a, Xin-Yu Du^a, Yun Xiong^c, Jin-Mei Lu^a, De-Zhu Li^a

a Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650201, China;
b Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650201, China;
c Gongshan Bureau of the Gaoligongshan National Nature Reserve, Gongshan, Yunnan, 673500, China

收稿日期:2021-03-24 修回日期:2021-09-12 出版日期:2022-04-25 发布日期:2022-04-24
通讯作者: Jin-Mei Lu,E-mail:lujinmei@mail.kib.ac.cn;De-Zhu Li,E-mail:dzl@mail.kib.ac.cn
基金资助:
The study was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDB31000000), the National Natural Science Foundation of China (31970232), and the Technological leading talent project of Yunnan (2017HA014). We also thank Mr. Wei-Ting Liou of National Taiwan University for sample collection, Dr. Fraser-Jenkins C.R., Dr. Li-Bing Zhang, and an anonymous reviewer for their constructive comments and suggestions.

A revision of Dryopteris sect. Diclisodon (Dryopteridaceae) based on morphological and molecular evidence with description of a new species

Zheng-Yu Zuo^a,b, Ting Zhao^a, Xin-Yu Du^a, Yun Xiong^c, Jin-Mei Lu^a, De-Zhu Li^a

a Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650201, China;
b Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan, 650201, China;
c Gongshan Bureau of the Gaoligongshan National Nature Reserve, Gongshan, Yunnan, 673500, China

Received:2021-03-24 Revised:2021-09-12 Online:2022-04-25 Published:2022-04-24
Contact: Jin-Mei Lu,E-mail:lujinmei@mail.kib.ac.cn;De-Zhu Li,E-mail:dzl@mail.kib.ac.cn
Supported by:
The study was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDB31000000), the National Natural Science Foundation of China (31970232), and the Technological leading talent project of Yunnan (2017HA014). We also thank Mr. Wei-Ting Liou of National Taiwan University for sample collection, Dr. Fraser-Jenkins C.R., Dr. Li-Bing Zhang, and an anonymous reviewer for their constructive comments and suggestions.

摘要/Abstract

摘要： Dryopteris sect. Diclisodon is a small section of ferns with about 12 species mainly distributed in East Asia. Here, we carried out morphological and phylogenetic analyses of this section. A new species from southwest China, D. gaoligongensis, is described and illustrated. Dryopteris gaoligongensis resembles D. indonesiana and D. sparsa, but differs by having a creeping rhizome and large 4-pinnate fronds. We also show that D. glabrior Ching & Z.Y. Liu is a distinct species; however, because it is a later homonym of D. glabrior Copel., it should be renamed D. renchangiana. We conclude that a species previously known as D. nitidula, also an illegitimate homonym, should be recognized with a new name, D. sinonepalensis. We resolve the phylogenetic position of D. yoroii as sister to other sampled species of D. sect. Diclisodon. Our phylogenetic analyses confirm the distinctiveness of D. gaoligongensis, D. renchangiana, and D. sinonepalensis. A key to species of D. sect. Diclisodon in China is provided.

关键词: Dryopteris gaoligongensis, Dryopteris renchangiana, Dryopteris sect. Nephrocystis, Dryopteris sinonepalensis, Molecular phylogeny, Nomenclatural novelties

Abstract: Dryopteris sect. Diclisodon is a small section of ferns with about 12 species mainly distributed in East Asia. Here, we carried out morphological and phylogenetic analyses of this section. A new species from southwest China, D. gaoligongensis, is described and illustrated. Dryopteris gaoligongensis resembles D. indonesiana and D. sparsa, but differs by having a creeping rhizome and large 4-pinnate fronds. We also show that D. glabrior Ching & Z.Y. Liu is a distinct species; however, because it is a later homonym of D. glabrior Copel., it should be renamed D. renchangiana. We conclude that a species previously known as D. nitidula, also an illegitimate homonym, should be recognized with a new name, D. sinonepalensis. We resolve the phylogenetic position of D. yoroii as sister to other sampled species of D. sect. Diclisodon. Our phylogenetic analyses confirm the distinctiveness of D. gaoligongensis, D. renchangiana, and D. sinonepalensis. A key to species of D. sect. Diclisodon in China is provided.

Key words: Dryopteris gaoligongensis, Dryopteris renchangiana, Dryopteris sect. Nephrocystis, Dryopteris sinonepalensis, Molecular phylogeny, Nomenclatural novelties

Zheng-Yu Zuo, Ting Zhao, Xin-Yu Du, Yun Xiong, Jin-Mei Lu, De-Zhu Li. A revision of Dryopteris sect. Diclisodon (Dryopteridaceae) based on morphological and molecular evidence with description of a new species[J]. Plant Diversity, 2022, 44(02): 181-190.

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A revision of Dryopteris sect. Diclisodon (Dryopteridaceae) based on morphological and molecular evidence with description of a new species

A revision of Dryopteris sect. Diclisodon (Dryopteridaceae) based on morphological and molecular evidence with description of a new species

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