Polystichum loratum (Dryopteridaceae), a New Fern Species from Guizhou, China

Publication Type:Journal Article
Year of Publication:2012
Authors:He, H, Yang, Y-Q, ZHANG, LI-BING
Journal:Novon: A Journal for Botanical Nomenclature
Volume:22
Issue:2
Date Published:2012
ISBN Number:1055-3177
Abstract:

Abstract.? A new fern species, Polystichum loratum H. He & Li Bing Zhang (Dryopteridaceae), is described and illustrated from limestone cliffs in northern Guizhou Province, China. Polystichum loratum is most similar to P. yaanense Liang Zhang & Li Bing Zhang in having narrowly ovate to lanceolate abaxial rachis scales. The new species is distinguished by its lorate leaf lamina, the oblong to narrowly ovate microscales (broad-type) on abaxial pinna surfaces, and the exindusiate sori, while P. yaanense has lanceolate leaf lamina, subulate microscales (narrow-type) on abaxial pinnae, and indusiate sori. Polystichum loratum is considered to be Critically Endangered (CR), based on IUCN Red List criteria.Abstract.? A new fern species, Polystichum loratum H. He & Li Bing Zhang (Dryopteridaceae), is described and illustrated from limestone cliffs in northern Guizhou Province, China. Polystichum loratum is most similar to P. yaanense Liang Zhang & Li Bing Zhang in having narrowly ovate to lanceolate abaxial rachis scales. The new species is distinguished by its lorate leaf lamina, the oblong to narrowly ovate microscales (broad-type) on abaxial pinna surfaces, and the exindusiate sori, while P. yaanense has lanceolate leaf lamina, subulate microscales (narrow-type) on abaxial pinnae, and indusiate sori. Polystichum loratum is considered to be Critically Endangered (CR), based on IUCN Red List criteria.

URL:http://dx.doi.org/10.3417/2012045
Short Title:Novon: A Journal for Botanical Nomenclature
Fri, 2014-01-24 18:21 -- admin
https://secure.gravatar.com/avatar/5ade1b012674ce3dd941e2ea5dd15cc1.jpg?d=https%3A//flora.indianbiodiversity.org/sites/all/modules/patches/contrib/gravatar/avatar.png&s=100&r=G
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith