Polystichum fengshanense, sp. nov. (sect. Haplopolystichum, Dryopteridaceae) from Karst Caves in Guangxi, China based on Morphological, Palynological, and Molecular Evidence

Citation

Material Information

Title:
Polystichum fengshanense, sp. nov. (sect. Haplopolystichum, Dryopteridaceae) from Karst Caves in Guangxi, China based on Morphological, Palynological, and Molecular Evidence
Series Title:
Systematic Botany
Creator:
Zhang, Li-Bing
He, Hai
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Cave Flora ( local )
Dryopteridaceae ( local )
Guangxi ( local )
Polystichum Fengshanense ( local )
Phylogeny ( local )
Sect. Haplopolystichum ( local )
Spore Morphology ( local )
Trnl-F Sequence ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
A new fern species, Polystichum fengshanense , is described and illustrated from nine karst caves in northern Guangxi, China. It is a member of Polystichum sect. Haplopolystichum (Dryopteridaceae). A phylogenetic analysis based on chloroplast trnL-F sequences suggests that the new species is most closely related to P. cavernicola, P. minutissimum, and P. speluncicola, species described from karst caves in adjacent southern Guizhou. Morphologically, P. fengshanense can be easily distinguished from these three species by having narrow-type microscales on the abaxial laminar surface, sessile pinnae, and sori closer to the midrib. Palynologically, P. fengshanense has granulate perispore sculpturing, whereas P. cavernicola has verrucate perispore sculpturing and P. speluncicola has cristate perispore sculpturing with numerous spinules. Polystichum fengshanense is considered to be critically endangered (CR) based on IUCN red list criteria because of its restricted distribution.
Original Version:
Systematic Botany, Vol. 36, no. 4 (2011-10-01).

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University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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