Conferva patens Dillwyn, 1809 species synonym

Conferva denudata Dillwyn species synonym

Conferva pulvinata Roth species synonym

Vertebrata scopulorum (Harvey) Kuntze, 1891 species synonym

Lophosiphonia scopulorum (Harvey) Womersley, 1950 species synonym

Dasya corallicola Funk, 1927 species synonym

Conferva stricta Dillwyn species synonym

Conferva urceolata Dillwyn species synonym

Conferva foeniculacea Draparnaud species synonym

Orcasia senticulosa (Harvey) Kylin species synonym

Carradoriella virgata (C.Agardh) P.C.Silva species synonym

Wilsonosiphonia howei (Hollenb.) D.Bustamante, Won & T.O.Cho, 2017 species homotypic synonym

Polysiphonia delicata Díaz-Tapia, 2017 species accepted

Carradoriella elongella (Harvey) Savoie & G.W.Saunders, 2019 species doubtful

Carradoriella denudata (Dillwyn) Savoie & G.W.Saunders species homotypic synonym

Polysiphonia sanguinea (Agardh) Harvey species synonym

Polysiphonia urceolata subsp. pulvinata Kylin subspecies synonym

Polysiphonia urceolata subsp. comosa (C.Agardh) J.Agardh subspecies synonym

Polysiphonia polyspora (C Agardh) J Agardh species synonym

Polysiphonia urceolata subsp. formosa (Suhr) J.Agardh subspecies synonym

Polysiphonia devoniesis Maggs & Hommersand species synonym

Polysiphonia urceolata f. roseola (C.Agardh) J.Agardh, 1863 form synonym

Neosiphonia howei (Hollenb.) Skelton & G.R.South, 2007 species homotypic synonym

Polysiphonia pulvinata Liebmann, 1845 species synonym

Polysiphonia fibrillosa Greville species accepted

Polysiphonia deusta Kütz. species synonym

Polysiphonia elongata Hudson species accepted

Polysiphonia montagnei De Not. species homotypic synonym

Polysiphonia flexicaulis Harvey species homotypic synonym

Neosiphonia poko (Hollenb.) I.A.Abbott, 2002 species synonym

Polysiphonia poko Hollenb., 1968 species accepted

Neosiphonia elongella (Harvey) M.S.Kim & I.K.Lee, 1999 species synonym

Polysiphonia elongella Harvey species synonym

Polysiphonia aquamara species accepted

Polysiphonia savatieri species accepted

Polysiphonia setacea species accepted

Polysiphonia violacea var. subulata (Ducluzeau) L.Batten variety synonym

Polysiphonia perreymondii J.Agardh, 1842 species synonym

Ceramium subulatum Ducluzeau, 1805 species synonym

Polysiphonia impolita Zanardini species synonym

Polysiphonia montagnei De Not. ex J.Agardh, 1842 species synonym

Polysiphonia multicapsularis Zanardini species synonym

Polysiphonia ornata J.Agardh, 1842 species accepted

Polysiphonia piligera Zanardini ex De Toni, 1907 species synonym

Polysiphonia upolensis species accepted

Polysiphonia orthocarpa Rosenvinge, 1924 species accepted

Polysiphonia havanensis Mont. species accepted

Polysiphonia flexella (C.Agardh) J.Agardh, 1842 species accepted

Polysiphonia acanthotricha Kütz., 1847 species synonym

Hutchinsia flexella C.Agardh species synonym

Polysiphonia paradoxa Thuret, 1876 species accepted

Polysiphonia hemisphaerica Areschoug species accepted

Polysiphonia denudata (Dillwyn) Grev. ex Harv. species accepted

Polysiphonia leptura Kütz. species synonym

Polysiphonia variegata (C.Agardh) Zanardini species synonym

Polysiphonia vidovichii Menegh. ex Kütz. species synonym

Hutchinsia variegata C.Agardh, 1824 species synonym

Hutchinsia biasolettoana C.Agardh, 1827 species synonym

Polysiphonia atlantica Kapraun & J.N.Norris species accepted

Polysiphonia macrocarpa (C.Agardh) Sprengel, 1827 species accepted

Polysiphonia decussata Hollenb. species accepted

Polysiphonia pulvinata (Roth) Sprengel species accepted

Hutchinsia pulvinata (Roth) C.Agardh species synonym

Polysiphonia howei Hollenb. species accepted

Polysiphonia pernacola N.M.Adams species accepted

Polysiphonia caspica Kütz., 1843 species synonym

Polysiphonia johnstonii species accepted

Polysiphonia coacta C.K.Tseng, 1944 species accepted

Polysiphonia exilis Harv. species accepted

Polysiphonia morrowii Harv. species accepted

Polysiphonia acuminata species accepted

Polysiphonia adamsiae Womersley species accepted

Polysiphonia scopulorum Harv. species accepted

Polysiphonia kieliana Kaminski & Nizamuddin, 1975 species accepted

Polysiphonia pacifica species accepted

Polysiphonia forcipata Harvey, 1855 species synonym

Polysiphonia urbanoides Levring, 1944 species accepted

Polysiphonia simplex species accepted

Polysiphonia binneyi Harvey species accepted

Polysiphonia mottei Lauret, 1967 species accepted

Polysiphonia anisogona J.D.Hooker & Harvey, 1845 species accepted

Polysiphonia derbesii Solier ex Kützing species accepted

Polysiphonia herpa Hollenb., 1968 species accepted

Womersleyella herpa (Hollenb.) R.E.Norris, 1992 species synonym

Polysiphonia confusa species accepted

Polysiphonia hendryi species accepted

Polysiphonia gardneri species synonym

Polysiphonia carettia Hollenberg, 1971 species accepted

Polysiphonia paniculata species accepted

Polysiphonia californica species accepted

Polysiphonia sanguinea (C.Agardh) Zanardini, 1840 species accepted

Polysiphonia megarthra Zanardini ex De Toni, 1907 species synonym

Polysiphonia kellneri Zanardini species synonym

Polysiphonia pycnocoma Kütz., 1849 species synonym

Hutchinsia sanguinea C.Agardh, 1827 species synonym

Polysiphonia longiarticulata Zanardini species synonym

Polysiphonia kampsaxii Borgesen, 1939 species accepted

Polysiphonia rudis Hook.f. & Harv. species accepted

Polysiphonia atricapilla J.Agardh, 1863 species accepted

Polysiphonia indigena species accepted

Polysiphonia yonakuniensis species accepted

Polysiphonia abscissoides Womersley species accepted

Polysiphonia biformis Zanardini, 1860 species accepted

Polysiphonia ceramiaeformis P.L.Crouan & H.M.Crouan species accepted

Polysiphonia pentamera species accepted

Polysiphonia forfex Harvey, 1859 species accepted

Polysiphonia infestans Harvey, 1855 species accepted

Polysiphonia devoniensis Maggs & Hommers. species accepted

Polysiphonia rhunensis Thuret, 1878 species accepted

Polysiphonia banyulensis Coppejans, 1976 species accepted

Polysiphonia flexicaulis (Harvey) F.S.Collins species accepted

Polysiphonia stricta (Dillwyn) Greville species accepted

Polysiphonia urceolata (Lightfoot ex Dillwyn) Greville species synonym

Hutchinsia urceolata (Lightfoot ex Dillwyn) Lyngbye species synonym

Polysiphonia roseola (C.Agardh) Fries species synonym

Polysiphonia formosa Suhr, 1831 species synonym

Hutchinsia roseola C.Agardh, 1828 species synonym

Polysiphonia spiralis Batten species synonym

Polysiphonia patens (Dillwyn) Harvey species synonym

Polysiphonia urceolata f. formosa (Suhr) J.Agardh, 1863 form synonym

Polysiphonia urceolata f. comosa (C.Agardh) J.Agardh, 1863 form synonym

Hutchinsia comosa C.Agardh, 1824 species synonym

Hutchinsia abyssina Lyngb., 1880 species synonym

Polysiphonia foeniculacea (C.Agardh) Sprengel, 1827 species accepted

Hutchinsia foeniculacea C.Agardh, 1824 species synonym

Polysiphonia opaca (C.Agardh) Moris & De Notaris, 1839 species accepted

Polysiphonia ophiocarpa Kütz., 1843 species synonym

Polysiphonia melanochroa Kütz., 1849 species synonym

Polysiphonia repens Kütz., 1843 species synonym

Polysiphonia disticha Zanardini, 1847 species synonym

Polysiphonia scoparia Kütz., 1843 species synonym

Polysiphonia phleborhiza Kütz., 1849 species synonym

Polysiphonia erythrocoma Kütz., 1843 species synonym

Polysiphonia laxiuscula Menegh., 1849 species synonym

Polysiphonia condensata Kütz., 1863 species synonym

Polysiphonia aculeifera Zanardini, 1847 species synonym

Polysiphonia spiculifera Zanardini ex Kütz., 1864 species synonym

Polysiphonia umbellifera Kütz., 1843 species synonym

Hutchinsia ramulosa C.Agardh, 1824 species synonym

Hutchinsia opaca C.Agardh, 1824 species synonym

Polysiphonia arachnoidea (C.Agardh) Zanardini species accepted

Hutchinsia arachnoidea C.Agardh, 1827 species synonym

Polysiphonia senticulosa Harv. species accepted

Polysiphonia pungens Hollenberg species synonym

Polysiphonia virgata (C.Agardh) Spreng. species accepted

Hutchinsia virgata C.Agardh species synonym

Carradoria virgata (C.Agardh) Kylin species synonym

Polysiphonia polyspora (C.Agardh) Montagne, 1840 species accepted

Hutchinsia polyspora C.Agardh, 1824 species synonym

Hutchinsia flocculosa C.Agardh, 1824 species synonym

Polysiphonia subcontinua (C.Agardh) J.Agardh, 1842 species synonym

Hutchinsia subcontinua C.Agardh species synonym

Polysiphonia tenerrima Kütz., 1843 species accepted

Polysiphonia sertularioides var. tenerrima Hauck, 1885 variety synonym

Polysiphonia dotyi Hollenb., 1968 species accepted

Polysiphonia homoia Setch. & N.L.Gardner, 1930 species accepted

Polysiphonia decipiens Mont. species accepted

Polysiphonia bajacali species accepted

Polysiphonia mollis J.D.Hooker & Harvey, 1847 species accepted

Polysiphonia flavescens Zanardini, 1874 species synonym

Polysiphonia setigera Kütz., 1849 species accepted

Polysiphonia minutissima species accepted

Polysiphonia hancocki species accepted

Polysiphonia collinsii species synonym

Polysiphonia snyderae species accepted

Polysiphonia nathaniellii species accepted

Polysiphonia tenuistrata species accepted

Polysiphonia novae-angliae Taylor species accepted

Polysiphonia farlowii Hollenberg species accepted

Polysiphonia beandetti species accepted

Polysiphonia quadrata Hollenberg species accepted

Ceramium strictum Roth, 1806 species synonym

Polysiphonia fasciculata Kütz., 1843 species synonym

Hutchinsia stricta (Dillwyn) C.Agardh species synonym

Polysiphonia cladorrhiza Ardissone, 1864 species accepted

Vertebrata spiculifera (Zanardini ex Kütz.) Kuntze, 1891 species synonym

Polysiphonia jacobii De Notaris species accepted

Polysiphonia ceramiiformis P.L.Crouan & H.M.Crouan, 1867 species accepted

Polysiphonia lithophila Kütz. species synonym

Polysiphonia variegata (C.Agardh) J.Agardh, 1842 species synonym

Polysiphonia schneideri B.Stuercke & Freshwater, 2010 species accepted

Polysiphonia nigrescens Hudson species accepted

Polysiphonia dichotoma Kütz., 1843 species accepted

Polysiphonia violacea f. subulata (Ducluzeau) Hauck form synonym

Polysiphonia macrocephala Zanardini, 1864 species synonym

Polysiphonia rhizoidea Meñez, 1964 species synonym

Polysiphonia flocculosa (C.Agardh) Endlichter, 1843 species accepted

Polysiphonia subulata (Ducluzeau) Kütz., 1863 species accepted

Polysiphonia macrocarpa Harv. species synonym

Polysiphonia ramulosa (C.Agardh) Sprengel, 1827 species synonym

Polysiphonia vidovichii Menegh. species homotypic synonym

Polysiphonia purpurea (C.Agardh) J.Agardh, 1842 species synonym

Polysiphonia denudata (Dillwyn) Greville species synonym

Polysiphonia derbesii Solier species homotypic synonym

Polysiphonia megarthra Zanardini species homotypic synonym

Polysiphonia piligera Zanardini species homotypic synonym

Polysiphonia spiculifera Zanardini species homotypic synonym

Polysiphonia urceolata f. pulvinata (Roth) Kylin, 1907 form proparte synonym