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Issue: Vol. 447 No. 4: 11 June 2020
Type: Article
Published: 2020-06-11
DOI: 10.11646/phytotaxa.447.4.8
Page range: 296–300
Abstract views: 25
PDF downloaded: 1

Polystichum asiae-minoris (Dryopteridaceae), a new fern from Kastamonu, Turkey

Bartın University Ulus Vocational School Department of Forestry and Forest Products Program, 74600 Ulus, Bartın, Turkey.
Küre Mountains National Park Directorate, Bartın 1. Ring Road Avenue Bartın Governor’s Office 3. Floor, 74100 Bartın, Turkey.
Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China.
Düzce University, Faculty of Forestry & DUOF Herbaria Konuralp, 81620 Düzce, Turkey.
Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China. Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, Missouri 63110, U.S.A.
IUCN Red List Polystichum obliquum Pteridophytes

Abstract

A new fern of Polystichum (Dryopteridaceae), P. asia-minoris, is described and illustrated from Horma Canyon in the borders of Küre Mountains National Park in Kastamonu Province located in the north of Turkey. Polystichum asia-minoris is distinguishable from the morphologically similar P. obliquum by having pinnae abaxially densely covered with broad-type microscales. It is not certain to which lineage the new species closely allied. The new species has extremely narrow distribution and is classified as Critically Endangered (CR) following IUCN Red List Criteria.