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Issue: Vol. 309 No. 1: 9 June 2017
Type: Article
Published: 2017-06-09
DOI: 10.11646/phytotaxa.309.1.6
Page range: 66–72
Abstract views: 22
PDF downloaded: 1

Polystichum hastipinnum (subg. Haplopolystichum; Dryopteridaceae), a new cave fern from Guangdong, China

South China Limestone Plants Research Center, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
South China Limestone Plants Research Center, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
South China Limestone Plants Research Center, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
South China Limestone Plants Research Center, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri 63166-0299, U.S.A.
Cave ferns Polystichum hastipinnum P. kwangtungense Pteridophytes China

Abstract

A new species of Polystichum (subg. Haplopolystichum; Dryopteridaceae), P. hastipinnum, is described from a limestone cave in northern Guangdong, China. Polystichum hastipinnum is most similar to P. kwangtungense in having oblong pinnae, but the former has stipe and rachis scales denser, basalmost pair of pinnae hastate and with bases somewhat cordate, while the latter has stipe and rachis scales much sparser, basalmost pair of pinnae oblong and with bases cuneate.