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Thelypteridaceae is one of the largest fern families, having about 950 species and a cosmopolitan distribution but with most… Expand Thelypteridaceae is one of the largest families of polypodioid ferns. The generic classification of the family is still… Expand A new species, Thelypteris beckeriana (Thelypteridaceae), is here described. It belongs to subgenus Goniopteris because of the… Expand The morphogenesis of the sexual phase of seven species of Thelypteris subg. Cyclosorus (Thelypteridaceae) is described and… Expand Summary In 1851 Newman established the genus Gymnocarpium for the purpose of distinguishing some exindusiate, terrestrial ferns… Expand Thelypteridaceae are mainly tropical ferns, the total number of species is about one thousand. The five European species… Expand The genus is re-described and its status discussed. A key to all known species is provided, and a full synonymy and description… Expand All known species of this genus are described, with synonymy for each and a key for identification. Seventeen new species are… Expand The new scheme of classification presented in this paper is based on the examination of all species in the family… Expand This is the first of an intended series of papers on the family Thelypteridaceae, especially in the Old World, based on studies… Expand