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Issue: Vol. 404 No. 6: 24 May 2019
Type: Article
Published: 2019-05-24
DOI: 10.11646/phytotaxa.404.6.1
Page range: 209–230
Abstract views: 20
PDF downloaded: 1

Eight new species of the fern genus Polystichum (subg. Haplopolystichum; Dryopteridaceae) from limestone caves in Guizhou, China

Missouri Botanical Garden, 4344 Shaw Blvd, St. Louis, Missouri 63110, U.S.A.; Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China
Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, and International Cultivar Registration Center for Osmanthus, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, Jiangsu, China; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, Jiangsu, China.
Institute for Integrative Nature Conservation Research, University of Natural Resources and Life Sciences Vienna, Gregor Mendel-Str. 33, 1180 Vienna, Austria
Guizhou limestone caves Polystichum sect. Haplopolystichum Pteridophytes

Abstract

Eight new fern species of Polystichum subg. Haplopolystichum sect. Haplopolystichum (Dryopteridaceae) are described and illustrated from Guizhou Province, southwestern China. These eight species include P. anshunense, P. asperrimum, P. confusum, P. kropfii, P. libingii, P. macrodon, P. perditum, and P. yifanii. Each of these eight species was discovered from only 1–2 limestone caves showing extremely narrow distributions. Therefore, all are classified as Critically Endangered (CR) following IUCN Red List criteria.