by Xfinity Soft | Feb 6, 2019 | Polystichum
Genus of ferns Polystichum is a genus of ferns in the family Dryopteridaceae, subfamily Dryopteridoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I).[1] The genus has about 500 species and has a cosmopolitan distribution.[1][3] The...
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