Pronephrium

Pronephrium is a genus of ferns in the family Thelypteridaceae in the family Thelypteridaceae, subfamily Thelypteridoideae, in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Other sources sink Pronephrium into a very broadly defined genus Thelypteris. Some species were split off into the genera Abacopteris, Grypothrix and Menisciopsis in 2021 as a result of a phylogenetic study of the family Thelypteridaceae.

The genus was first described in 1851 by Carl Borivoj Presl.

Species
, the Checklist of Ferns and Lycophytes of the World accepted the following species and hybrids:


 * Pronephrium affine (Blume) C.Presl
 * Pronephrium amboinense (Willd.) Holttum
 * Pronephrium amphitrichum Holttum
 * Pronephrium aoristisorum (Harr.) S.E.Fawc. & A.R.Sm.
 * Pronephrium aquatiloides (Copel.) Holttum
 * Pronephrium borneense (Hook.) Holttum
 * Pronephrium camarinense (Holttum) S.E.Fawc. & A.R.Sm.
 * Pronephrium celebicum (Baker) Holttum
 * Pronephrium clemensiae (Copel.) Holttum
 * Pronephrium euryphyllum (Rosenst.) Holttum
 * Pronephrium exsculptum (Baker) Holttum
 * Pronephrium fidelei Rakotondr.
 * Pronephrium firmulum (Baker) Holttum
 * Pronephrium giluwense Holttum
 * Pronephrium granulosum (C.Presl) Holttum
 * Pronephrium hewittii (Copel.) Holttum
 * Pronephrium hosei (Baker) Holttum
 * Pronephrium inaequilobatum (Holttum) S.E.Fawc. & A.R.Sm.
 * Pronephrium kjellbergii Holttum
 * Pronephrium lineatum (Blume) C.Presl
 * Pronephrium manuselense M.Kato
 * Pronephrium marojejyensis Rakotondr.
 * Pronephrium menisciicarpon (Blume) Holttum
 * Pronephrium merrillii (Christ) Holttum
 * Pronephrium millarae Holttum
 * Pronephrium minahassae Holttum
 * Pronephrium moniliforme (Tagawa & K.Iwats.) Holttum
 * Pronephrium murkelense (M.Kato) S.E.Fawc. & A.R.Sm.
 * Pronephrium nervosum (Fee) S.E.Fawc. & A.R.Sm.
 * Pronephrium palauense (Hosok.) Holttum
 * Pronephrium peltatum (Alderw.) Holttum
 * Pronephrium peramalense Holttum
 * Pronephrium philippinum (C.Presl) S.E.Fawc. & A.R.Sm.
 * Pronephrium rhombeum (Christ) Holttum
 * Pronephrium samarense (Copel.) Holttum
 * Pronephrium simillimum (C.Chr.) Holttum
 * Pronephrium solsonicum Holttum
 * Pronephrium thysanoides Holttum
 * Pronephrium trachyphyllum Holttum
 * Pronephrium xiphioides (Christ) Holttum


 * Hybrids
 * Pronephrium × interruptum Holttum
 * Pronephrium × liukiuense (Christ) Nakaike
 * Pronephrium × occultum (C.Hope) comb.ined.