Systematics of the Fern Genus Didymochlaena (Didymochlaenaceae)

Author:

Shang Hui1,Zhang Li-Bing2

Affiliation:

1. 1Eastern China Conservation Centre for Wild Endangered Plant Resources, Shanghai Chenshan Botanical Garden, Shanghai 201602, China

2. 2Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, Missouri 63110, USA; Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China

Abstract

Abstract— The fern genus Didymochlaena is characterized by having scaly rhizomes and petioles, tufted and bipinnate leaves, dimidiate pinnules, and fewer than 11 sori per pinnule. For a long time only one species was widely recognized in the genus. Most recently, six and seven species from Madagascar and Asia-Pacific regions, respectively, have been recognized based on morphological and/or molecular evidence. In this monographic study we recognize 22 species worldwide, six of which are described as new: D. alpina, D. amazonica, D. cameroonensis, D. comorensis, D. cubensis, and D. mesoamericana. A key to all species is provided, and detailed descriptions, illustrations, and information on their distribution and habitats are given.

Publisher

American Society of Plant Taxonomists

Subject

Plant Science,Genetics,Ecology, Evolution, Behavior and Systematics

Reference38 articles.

1. On natural classification of the family “Polypodiaceae”;Ching;Sunyatsenia,1940

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