Three out of one: revising the species delimitation of the tree fern Gymnosphaera salletii (Cyatheaceae), with particular reference to the foliar nectary

doi:10.1093/botlinnean/boad036

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	Three out of one: revising the species delimitation of the tree fern Gymnosphaera salletii (Cyatheaceae), with particular reference to the foliar nectary
	Li, Shu-Han; Zuo, Zheng-Yu; Chen, Cheng-Wei; Pham, Van The; Luu, Hong Truong; Dong, Shi-Yong
	2024
Source Publication	BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
Volume	204 Issue:1 Pages:63-75
Abstract	In Indochina the species diversity of Cyatheaceae remains insufficiently known. Here we demonstrate the scaly tree fern Gymnosphaera salletii in Vietnam to be an assemblage of three distinct species based on molecular and morphological data, and report for the first time the occurrence of foliar nectaries in Gymnosphaera. The true G. salletii is morphologically unique based on the protuberant glands present on the petiole. Gymnosphaera phankelocii sp. nov. and Gymnosphaeravietnamensis sp. nov. are recognized as new species; G. phankelocii is characterized by its distant two-rowed sori and G. vietnamensis by the sub-tripinnate fronds. Our phylogenetic analyses indicated that G. phankelocii is a relatively isolated species, while G. vietnamensis is a member of the G. salletii clade along with G. austroyunnanensis, G. salletii, and G. saxicola. The two new species and members of the G. salletii clade are all local endemics, and provide good examples to understand the frequent local endemics and their evolution in scaly tree ferns. Eleven species of Gymnosphaera are now known from Indochina; we provide a diagnostic key to these species.
Keyword	Indochina morphology new species phylogeny taxonomy CLASSIFICATION
Subject Area	Plant Sciences
DOI	10.1093/botlinnean/boad036
WOS ID	WOS:001099241800001
Citation statistics
Document Type	期刊论文
Identifier	http://ir.kib.ac.cn/handle/151853/74892
Collection	中国科学院昆明植物研究所
Recommended Citation GB/T 7714	Li, Shu-Han,Zuo, Zheng-Yu,Chen, Cheng-Wei,et al. Three out of one: revising the species delimitation of the tree fern Gymnosphaera salletii (Cyatheaceae), with particular reference to the foliar nectary[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2024,204(1):63-75.
APA	Li, Shu-Han,Zuo, Zheng-Yu,Chen, Cheng-Wei,Pham, Van The,Luu, Hong Truong,&Dong, Shi-Yong.(2024).Three out of one: revising the species delimitation of the tree fern Gymnosphaera salletii (Cyatheaceae), with particular reference to the foliar nectary.BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,204(1),63-75.
MLA	Li, Shu-Han,et al."Three out of one: revising the species delimitation of the tree fern Gymnosphaera salletii (Cyatheaceae), with particular reference to the foliar nectary".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 204.1(2024):63-75.

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