Synonyms
Polypodium vulgare var. columbianum Gilbert
Polypodium vulgare subsp. columbianum (Gilbert) Hultén
Polypodium vulgare var. perpusillum Clute
Polypodium vulgare f. perpusillum (Clute) M.Broun
Polypodium vulgare var. hesperium (Maxon) A.Nelson & J.F.Macbr.
Polypodium prolongilobum Clute