This is a list of the orders, families and genera in the class Phaeophyceae — the brown algae.
Discosporangiophycidae
Discosporangiales
Choristocarpaceae Choristocarpus Zanardini 1860
Discosporangiaceae Discosporangiumtite Falkenberg 1878
Ishigeophycidae Diplura Hollenberg 1969
Ishigeales
Ishigeaceae Ishige Yendo 1907
Petrodermataceae Petroderma Kuckuck 1897
Dictypophycidae
Syringodermatales
Syringodermataceae Microzonia Agardh 1984 Syringoderma Levring 1940
Onslowiales
Onslowiaceae Onslowia Searles 1980 Verosphacella Henry 1987
Dictyotales
Dictyotaceae Canistrocarpus De Paula & De Clerck 2006 Chlanidophora Agardh 1894 non Berg 1877 Dictyopteris Lamouroux 1809a nom. cons. Dictyota Lamouroux 1809b nom. cons. [Dilophus Agardh 1882; Glossophora Agardh 1882; Glossophorella Nizamuddin & Campbell 1995; Pachydictyon Agardh 1894] Dictyopsis Troll 1931 Distromium Levring 1940 Exallosorus Phillips 1997 Herringtonia Kraft 2009 Homoeostrichus Agardh 1894 Lobophora Agardh 1894 [Pocockiella Papenfuss 1943] Lobospira Areschoug 1854 Newhousia Kraft et al. 2004 Padina Adanson 1793 nom. cons. [Dictyerpa Collins & Harvey 1901; Vaughaniella Borgesen 1950] Padinopsis Ercegovic 1955 Rugulopteryx De Cerck & Coppejans 2006 Scoresbyella Womersley 1987 Spatoglossum Kutzing 1843 Stoechospermum Kutzing 1843 Stypopodium Kutzing 1843 Taonia Agardh 1848 Zonaria Agardh 1817
Sphacelariales
Lithodermataceae Bodanella Zimmermann 1927 Heribaudiella Gomont 1896 Lithoderma Areschoug 1875 Pseudolithoderma Svedelius 1910
Phaeostrophionaceae Phaeostrophion Setchell & Gardner 1924
Sphacelodermaceae Sphaceloderma Kuckuck 1894
Stypocaulaceae Alethocladus Halopteris Kutzing 1843 [Stypocaulon Kutzing 1843] Phloiocaulon Geyler 1866 Protohalopteris Draisma, Prud'homme & Kawai 2010 Ptilopogon Reinke 1890
Cladostephaceae Cladostephus Agardh 1817
Sphacelariaceae Battersia Reinke ex Batters 1890 emend. Draisma, Prud'homme & Kawai 2010 Chaetopteris Kutzing 1843 Herpodiscus South 1974 emend. Draisma, Prud'homme & Kawai 2010 Sphacelaria Lyngbye 1818 Sphacella Reinke 1890 Sphacelorbus Draisma, Prud'homme & Kawai 2010
Fucophycidae
Asterocladales
Asterocladaceae Asterocladon Müller, Parodi & Peters 1998
Ascoseirales
Ascoseiraceae Ascoseira Skottsberg 1907
Cutleriales
Cutleriaceae Cutleria Zanardinia
Desmarestiales
Arthrocladiaceae Arthrocladia
Desmarestiaceae Desmarestia Himantothallus Phaeurus
Ectocarpales
Acinetosporaceae Acinetospora Feldmannia Geminocarpus Hincksia Pogotrichum Pylaiella
Adenocystaceae Adenocystis Caepidium Utriculidium
Chordariaceae Acrothrix Ascoseirophila Asperococcus Austrofilum Chordaria Cladosiphon Corycus Delamarea Dictyosiphon Elachista Eudesme Giraudia Gononema Halothrix Haplogloia Hecatonema Heterosaundersella Hummia Isthmoplea Laminariocolax Laminarionema Leathesia Leptonematella Litosiphon Microspongium Mikrosyphar Myelophycus Myriogloea Myrionema Myriotrichia Papenfussiella Petrospongium Pleurocladia Polytretus Proselachista Protectocarpus Punctaria Sauvageaugloia Soranthera Sorocarpus Spermatochnus Sphaerotrichia Stictyosiphon Streblonema Striaria Stschapovia Tinocladia
Chordariopsidaceae Chordariopsis
Ectocarpaceae Ectocarpus Kuckuckia
Mesosporaceae Mesospora
Myrionemataceae Asterotrichia
Pylaiellaceae Bachelotia
Fucales
Bifurcariopsidaceae Bifurcariopsis
Durvillaeaceae Durvillaea
Fucaceae Ascophyllum Fucus Hesperophycus Pelvetia Pelvetiopsis Silvetia Xiphophora
Himanthaliaceae Himanthalia
Hormosiraceae Hormosira
Notheiaceae Notheia
Sargassaceae
Anthophycus Axillariella Bifurcaria Bifurcariopsis Carpoglossum Caulocystis Coccophora Cystophora Cystoseira Ericaria Gongolaria Halidrys Hizikia Hormophysa Myagropsis Myogropsis Myriodesma Polycladia Sargassum Sargassopsis Sirophysalis Stephanocystis Stolonophora Turbinaria
Seirococcaceae Cystophaera Marginariella Phyllospora Seirococcus
Laminariales
Akkesiphycaceae Akkesiphycus
Alariaceae Alaria Aureophycus Druehlia Eualaria Hirome Lessoniopsis Pleurophycus Pterygophora Undaria Undariella Undariopsis
Chordaceae Chorda
Costariaceae Agarum Costaria Dictyoneurum Thalassiophyllum
Laminariaceae Arthrothamnus Costularia Cymathere Feditia Gigantea Laminaria Macrocystis Nereocystis Pelagophycus Pelagophycus x Macrocystis Phycocastanum Phyllariella Polyschidea Postelsia Pseudolessonia Saccharina Streptophyllopsis
Lessoniaceae Ecklonia Eckloniopsis Egregia Eisenia Lessonia
Pseudochordaceae Pseudochorda
Nemodermatales
Nemodermataceae Nemoderma
Ralfsiales
Neoralfsiaceae Neoralfsia
Ralfsiaceae Basispora Hapalospongidion Jonssonia Myrionemopsis Porterinema Ralfsia
Scytosiphonales
Chnoosporaceae Chnoospora
Scytosiphonaceae Colpomenia Hydroclathrus Petalonia Rosenvingea Scytosiphon Coelocladia Phaeostroma
Scytothamnales
Scytothamnaceae Asteronema Scytothamnus Stereocladon
Splachnidiaceae Splachnidium
Sporochnales
Sporochnaceae Austronereia Bellotia Carpomitra Encyothalia Nereia Perisporochnus Perithalia Sporochnema Sporochnus Tomaculopsis
Tilopteridales
Halosiphonaceae Halosiphon
Masonophycaceae Masonophycus
Phyllariaceae Phyllariopsis Saccorhiza
Stschapoviaceae Stschapovia
Tilopteridaceae Haplospora Phaeosiphoniella Tilopteris
Incertae sedis
Neoleptonema
Heterochordariaceae Analipus
References