Cyrtomium is a genus of about 35 species of ferns in the family Dryopteridaceae, subfamily Dryopteridoideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Species are native to Asia, Africa (including Madagascar), and the Pacific Ocean islands (Hawaii). It is very closely related to the genus Polystichum, with 2016 research suggesting it should be included in a clade sister to Polystichum s.s. Species , the Checklist of Ferns and Lycophytes of the World accepted the following species: Cyrtomium aequibasis (C.Chr.) Ching Cyrtomium anomophyllum (Zenker) Fraser-Jenk. Cyrtomium atropunctatum Kurata Cyrtomium caryotideum (Wall. ex Hook. & Grev.) C.Presl Cyrtomium chingianum P.S.Wang Cyrtomium confertifolium Ching & K.H.Shing Cyrtomium conforme Ching Cyrtomium devexiscapulae (Koidz.) Ching Cyrtomium elongatum S.K.Wu & P.K.Lôc Cyrtomium falcatum (L.f.) C.Presl (Japanese holly fern or holly fern) Cyrtomium fortunei J.Sm. Cyrtomium grossum Christ Cyrtomium guizhouense H.S.Kung & P.S.Wang Cyrtomium hemionitis Christ Cyrtomium laetevirens (Hiyama) Nakaike Cyrtomium latifalcatum S.K.Wu & Mitsuta Cyrtomium lonchitoides (Christ) Christ Cyrtomium luctuosum J.P.Roux Cyrtomium macrophyllum (Makino) Tagawa Cyrtomium membranifolium Ching & K.H.Shing ex H.S.Kung & P.S.Wang Cyrtomium micropterum (Kunze) Ching Cyrtomium nephrolepioides (Christ) Copel. Cyrtomium obliquum Ching & K.H.Shing Cyrtomium omeiense China & Shing Cyrtomium pachyphyllum (Rosenst.) C.Chr. Cyrtomium pseudocaryotideum J.P.Roux Cyrtomium serratum Ching & K.H.Shing Cyrtomium shingianum H.S.Kung & P.S.Wang Cyrtomium sinningense Ching & K.H.Shing Cyrtomium taiwanianum Tagawa Cyrtomium takusicola Tagawa Cyrtomium tsinglingense Ching & K.H.Shing Cyrtomium urophyllum Ching Cyrtomium yamamotoi Tagawa Cyrtomium yunnanense Ching References External links Little D. P. & Barrington, D. S. Abstract: Relationships of Cyrtomium and Polystichum List of published names in Cyrtomium (includes synonyms) Cyrtomium falcatum Dryopteridaceae Fern genera