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Polystichum duyunense (subg. Haplopolystichum; Dryopteridaceae), a new cave fern from Guizhou, China

XIN-YUAN MIAO, CHUN-XIANG LI, LI-BING ZHANG

Abstract


A new cave fern of Polystichum (subg. Haplopolystichum; Dryopteridaceae), P. duyunense, is described from a limestone cave in southern Guizhou, China. Polystichum duyunense is most similar to P. cavernicola in having oblong pinnae, but the former has pinnae larger, often angled basiscopically, and somewhat imbricate, while the latter has pinnae smaller, angled acroscopically, and apart from each other.


Keywords


Cave species, fern, Polystichum cavernicola, Pteridophytes

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DOI: http://dx.doi.org/10.11646/phytotaxa.292.3.10

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ISSN 1179-3155 (print); ISSN 1179-3163 (online)

Published by Magnolia Press, Auckland, New Zealand