A Generic Classification of the Thelypteridaceae Author Fawcett, Susan Author Smith, Alan R. text 2021 BRIT Press Fort Worth, Texas, USA book 10.17348/jbrit.v15.i2.1206 14111022 * Plesioneuron keysserianum (Rosenst.) S.E. Fawc. & A.R. Sm. , comb. nov. — Dryopteris keysseriana Rosenst., Repert. Spec. Nov. Regni Veg.10:333.1912 .— Pneumatopteris keysseriana (Rosenst.) Holttum — Thelypteris keysseriana (Rosenst.) C.F.Reed