Polystichum kuankuoshuiense (sect. Sphaenopolystichum, Dryopteridaceae), a new fern from Guizhou, China

BO WANG; QING-WEN SUN; ZE-HUAN WANG; LI-BING ZHANG

doi:10.11646/phytotaxa.592.2.8

Issue: Vol. 592 No. 2: 18 April 2023

Type: Article

Published: 2023-04-18

DOI: 10.11646/phytotaxa.592.2.8

Page range: 144-150

Abstract views: 77

PDF downloaded: 5

Polystichum kuankuoshuiense (sect. Sphaenopolystichum, Dryopteridaceae), a new fern from Guizhou, China

BO WANG⁺⁻
QING-WEN SUN⁺⁻
ZE-HUAN WANG⁺⁻
LI-BING ZHANG⁺⁻

College of pharmacy, Guizhou University of Traditional Chinese Medicine, 550025, Guiyang, China

Missouri Botanical Garden, 4344 Shaw Blvd, St. Louis, Missouri 63110, U.S.A. and Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, P. R. China

IUCN assessment karst flora Polystichum auriculum Polystichum bifidum Polystichum suiyangense Pteridophytes

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Abstract

Polystichum kuankuoshuiense (Dryopteridaceae), a new species from Kuankuoshui Nature Reserve, Suiyang County, Guizhou, China, is described and illustrated. It is a member of P. sect. Sphaenopolystichum and similar to P. auriculum, P. bifidum, and P. suiyangense but differs from them in its rhizome, scale color, and pinna morphology. Quite surprisingly, the new species is not closely related to these morphologically similar species. The new species is currently known only from the type locality and is classified as CR (critically endangered) following the IUCN criteria.

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