仙菜科
下级分类

本科包括以下属：
端枝藻属 Acrothamnion J.Agardh, 1892
Acrothamniopsis A.Athanasiadis & G.T.Kraft, 1996
Amasperma Rafinesque, 1814
Amoenothamnion Wollaston, 1968
对丝藻属 Antithamnion Nägeli, 1847
拟对丝藻属 Antithamnionella Lyle, 1922
Ardreanema R.E.Norris & I.A.Abbott, 1992
Ascocladium Nägeli, 1861
巴里藻属 Balliella H.Itono & T.Tanaka, 1973
Boreothamnion M.J.Wynne, 1980
Bornetia Thuret, 1855
Boryna Grateloup ex Bory de Saint-Vincent, 1822
Calliclavula C.W.Schneider, 1989
Callidictyon J.N.Norris & I.A.Abbott, 1995
Callithamniella G.Feldman-Mazoyer, 1938
Campylaephora J.Agardh, 1851
Carpoblepharis Kützing, 1843
纵胞藻属 Centroceras F.T.Kützing, 1841
Centrocerocolax A.B.Joly, 1966
仙菜属 Ceramium Roth, 1797
Chaetoceras Kützing, 1847
珊形藻属 Corallophila Weber-van Bosse, 1923
尖顶珊形藻 Corallophila apiculatum (Yamada Norris, 1993)
Corallophila atlantica (A.B.Joly & Ugadim) R.E.Norris
Corallophila cinnabarina (Grateloup ex Bory) R.E.Norris, 1993
纵皮珊形藻 Corallophila huysmansii (Weber Bosse) R.E.Norris, 1993
Corallophila kleiwegii Weber Bosse, 1923
喜毛藻属 Dasyphila Sonder, 1845
羽状喜毛藻 Dasyphila plumarioides Yendo, 1920
Dasyphila preissii Sonder
Delesseriopsis Okamura, 1931
Dohrniella Funk, 1922
Dohrniella antillarum (W.R.Taylor) Feldm.-Maz.
Dohrniella neapolitana Funk, 1922
Elisabethia Trevisan, 1855
Elisiella Womersley, 1998
Episperma Rafinesque, 1814
Episporium Möbius, 1885
盖氏藻属 Gayliella T.O.Cho, L.J.McIvor & S.M.Boo, 2008
Gulsoniopsis Hommersand, 1963
Gymnothamnion J.Agardh, 1892
Halosia Cormaci & G.Furnari, 1994
爬软藻属 Herpochondria F.Schmitz & Falkenberg, 1897
Herpochondria borealis (Barros-Barreto, Jaramillo, G.Hommersand, Ferreira & Maggs, 2023) Barros-Barreto & Maggs, 2023
齿边爬软藻 Herpochondria dentata (Okamura Itono,1977)
优美爬软藻 Herpochondria elegans (Okamura) Itono, 1977
Herpothamnion Nägeli, 1862
Heterothamnion J.Agardh, 1892
Hollenbergia Wollaston, 1972
Irtugovia Perestenko, 1994
Lasiothalia Harvey, 1855
Laurenciophila Stegenga, 1986
Leptoklonion A.Athanasiadis, 1996
Macrothamnion Wollaston, 1968
Microcladia Greville, 1830
Microcladia borealis Ruprecht
Microcladia coulteri Harvey
Microcladia exserta
Microcladia glandulosa (Solander ex Turner) Greville
Microcladia novae-zelandiae J.Agardh
Microcladia pinnata J.Agardh
Microgelidiopsis Ercegovic, 1980
Miscosporium Nägeli, 1862
Morothamnion C.Cramer, 1862
Muellerena F.Schmitz, 1897
Muellerena wattsii
Ochmapexus Womersley, 1998
Ossiella A.J.K.Millar & I.A.Abbott, 1997
Pandorella G.Feldmann, 1947
Perikladosporon A.Athanasiadis, 1996
Perischelia J.Agardh ex Kylin, 1956
Perithamnion J.Agardh, 1892
Platythamnion J.Agardh, 1892
Plumariella Okamura, 1930
Poecilothamnion Nägeli, 1847
Pterocladiopsis Ercegovic, 1963
扁丝藻属 Pterothamnion Nägeli, 1855
Pterothamnion antarcticum (Kylin) Moe & P.C.Silva
Pterothamnion confusum (J.Agardh) Athanas.
Pterothamnion crispum (Ducluz.) Nägeli
Pterothamnion heteromorphum (J.Agardh) Athanas. & Kraft
Pterothamnion pectinatum
Pterothamnion plumula (J.Ellis) Nägeli
Pterothamnion polyacanthum (Kützing) Nägeli
Pterothamnion simile (Hook.f. & Harv.) Nageli
Pterothamnion spinescens (Strömfelt) Athanasiadis, 1996
Pterothamnion squarrulosum (Harv.) Athanas. & Kraft
Pterothamnion villosum
扁丝藻 Pterothamnion yezoense (Inagaki) Athanasiadis, 1994
Ptilothamniopsis P.S.Dixon, 1971
Ptilothamniopsis lejolisea
Radiathamnion E.M.Gordon-Mills & G.T.Kraft, 1981
Radiathamnion speleotis
Reinboldiella De Toni, 1895
Scagelia E.M.Wollaston, 1972
Scageliopsis E.M.Wollaston, 1981
Scagelothamnion A.Athanasiadis, 1996
Sciurothamnion O.De Clecrk & G.T.Kraft, 2002
Seagriefia Stegenga, Bolton & Anderson, 1997
Skeletonella A.J.K.Millar & O.De Clerck, 2007
Sporacanthus Kützing, 1855
Sporoseira F.J.Ruprecht, 1851
Sympodothamnion Itono, 1977
Syringocolax Reinsch, 1875
Tetrathamnion Wollaston, 1968
Trichoceras Kützing, 1849
Trithamnion Wollaston, 1968
Warrenia Harvey ex F.Schmitz & Hauptfleisch, 1897
Zonariophila Stegenga & Kemperman, 1996