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Reducing the fern genus Dryopsis to Dryopteris and the systematics and nomenclature of Dryopteris subgenus Erythrovariae section Dryopsis (Dryopteridaceae)

. Phytotaxa. 71, 1 (Nov. 2012), 17–27. DOI:https://doi.org/10.11646/phytotaxa.71.1.4.