A taxonomic revision of Cyclosorus subgenus Cyclosoriopsis (Thelypteridaceae) from China

Authors

  • Zhong-Yang LI,

    1. State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
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  • Zhao-Rong HE,

    1. School of Life Sciences, Yunnan University, Kunming 650091, China
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  • Xian-Chun ZHANG

    Corresponding author
    • State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
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Author for correspondence. E-mail: zhangxc@ibcas.ac.cn. Tel.: 86-10-62836291. Fax: 86-10-62590843.

Abstract

This paper deals with species of the genus Cyclosorus subgenus Cyclosoriopsis (Thelypteridaceae) from China, which is characterized by goniopteroid venation and unicellular glands on sporangial stalks. Morphological study of specimens and living plants reveals that venation and glands/glandular hairs on laminae are the most important diagnostic characters for species identification. Twenty-two species are recognized, including seven species endemic to China. Fifty species names are newly reduced to synonyms. A key to species from China, description, and distribution map of each species are provided. Three species are treated as dubious species, and 22 species are treated as putative hybrids.

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