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Dryopteris patula (Sw.) Underw.
Family: Dryopteridaceae [Aspidium apertum Fée, moreAspidium chaerophylloides Moritz, Aspidium diastematocarpon (Fée) Fée, Aspidium imbecile Kunze ex Ettingsh., Aspidium leptorachis Kunze, Aspidium mexicanum var. serratum Mett., Aspidium patulum Sw., Aspidium patulum var. chaerophylloides (Baker ex Mart.) J.Bommer & Christ, Aspidium paupertinum Röm., Aspidium polystichoides (Presl) Mett., Dryopteris aperta (Fée) C. Chr., Dryopteris patula var. chaerophylloides (Baker ex Mart.) Hieron., Dryopteris patula var. serrata (Mett.) C.V.Morton, Dryopteris simplicior Mickel & Beitel, Filix patula (Sw.) Farw., Filix-mas patula (Sw.) Farw., Filix-mas patula var. chaerophylloides (Baker ex Mart.) Farw., Lastrea aperta (Fée) Moore, Lastrea diastematocarpa (Fée) Moore, Lastrea leptorachis (Kunze) Liebm., Lastrea patula (Sw.) T. Moore, Lastrea paupertina (Röm.) Liebm., Lastrea polystichoides C. Presl, Nephrodium patulum (Sw.) Bak., Nephrodium patulum var. chaerophylloides Baker, Nephrodium patulum var. robustior Donn.Sm.]	Resources
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The PCC, and this data portal, were made possible by funding from the National Science Foundation’s Advancing Digitization of Biological Collections (ADBC) program, grant numbers 1802504, 1802352, 1802134, 1802033, 1802270, 1802255, 1802239, 1802446, 1802305.

The pteridoportal taxonomic thesaurus is based on the Checklist of Ferns and Lycophytes of the World, generously provided by Michael Hassler.