WoRMS taxon details

Fucaceae Adanson, 1763

143723  (urn:lsid:marinespecies.org:taxname:143723)

accepted
Family
Genus Ascophyllum Stackhouse, 1809
  » Species Ascophyllum nodosum (Linnaeus) Le Jolis, 1863
    » Forma Ascophyllum nodosum f. mackayi (Turner) A.C.Mathieson & Dawes, 2017
    » Forma Ascophyllum nodosum f. scorpioides Hauck, 1883
    » Forma Ascophyllum nodosum f. denudatum (C.Agardh) Athanasiadis, 1996 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863
    » Variety Ascophyllum nodosum var. furcatum (Areschoug) Reinke, 1892 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863 (synonym)
    » Variety Ascophyllum nodosum var. lusitanicum Lami, 1939 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863
    » Variety Ascophyllum nodosum var. mackayi (Turner) Cotton, 1912 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863
    » Variety Ascophyllum nodosum var. minor Batters, 1902 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863
    » Variety Ascophyllum nodosum var. minus Batters, 1902 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863 (synonym)
    » Variety Ascophyllum nodosum var. scorpioides (Hauck) Reinke, 1889 accepted as Ascophyllum nodosum f. scorpioides Hauck, 1883 (synonym)
    » Variety Ascophyllum nodosum var. siliquatum (Turner) Batters, 1902 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863
  » Species Ascophyllum canaliculatum (Linnaeus) Kuntze, 1891 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845 (synonym)
  » Species Ascophyllum chondrophyllum (R.Brown ex Turner) Kuntze, 1891 accepted as Xiphophora chondrophylla (R.Brown ex Turner) Montagne ex Harvey, 1855 (synonym)
  » Species Ascophyllum compressum (J.Agardh) Kuntze, 1891 accepted as Silvetia compressa (J.Agardh) E.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999 (synonym)
  » Species Ascophyllum constricta (J.Agardh) Kuntze, 1891 accepted as Axillariella constricta (Kützing) Gruber, 1896 (synonym)
  » Species Ascophyllum mackayi (Turner) Holmes & Batters, 1892 accepted as Ascophyllum nodosum f. mackayi (Turner) A.C.Mathieson & Dawes, 2017 (synonym)
  » Species Ascophyllum robertsonii (Batters) Batters, 1892 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863 (synonym)
Genus Fucus Linnaeus, 1753
  » Species Fucus abnormis Stackhouse
  » Species Fucus antennulatus Raffeneau-Delile
  » Species Fucus antennulatus Raffeneau Delile
  » Species Fucus aphyllantos Gmelin
  » Species Fucus atomarius (Woodward) Bertoloni
  » Species Fucus bacciferus
  » Species Fucus botryoid Forssk.
  » Species Fucus capitatus Gmelin
  » Species Fucus capitatus Stackh.
  » Species Fucus capreolatus R.Brown
  » Species Fucus caranoides
  » Species Fucus ceranoides Linnaeus, 1753
    » Forma Fucus ceranoides f. lacustris Kjellman
    » Forma Fucus ceranoides f. latrifrons Kickx
    » Forma Fucus ceranoides f. ramosissima Lynn, 1935
    » Forma Fucus ceranoides f. typicus Kjellman
    » Variety Fucus ceranoides var. glomerata (Batters) Lynn
    » Variety Fucus ceranoides var. linearis Batters
    » Variety Fucus ceranoides var. longifructus (De Candolle) C.Agardh
    » Variety Fucus ceranoides var. proliferatus Skrine, Newton & Chater
    » Forma Fucus ceranoides f. divergens (J.Agardh) Kjellman, 1880 accepted as Fucus ceranoides Linnaeus, 1753
    » Forma Fucus ceranoides f. harveyanus (Decaisne ex J.Agardh) Kjellman, 1880 accepted as Fucus ceranoides Linnaeus, 1753
    » Variety Fucus ceranoides var. lacerus (Linnaeus) Lightfoot accepted as Chondrus crispus Stackhouse, 1797
    » Variety Fucus ceranoides var. limicola S.M.Baker & M.H.Bohling (uncertain)
  » Species Fucus cespitosus
  » Species Fucus chalonii Feldmann, 1941
  » Species Fucus confervicola Chamisso
  » Species Fucus conglobatus Turner
  » Species Fucus coriaceus Roussel, 1806
  » Species Fucus corrigerus Vahl
  » Species Fucus cottonii M.J.Wynne & Magne, 1991
  » Species Fucus cystocarpus C.Agardh
  » Species Fucus degenerativus (Arcich.) Richard
  » Species Fucus deustus 'Fl.Dan.'
  » Species Fucus diaphanus Esper, 1800
  » Species Fucus distichus Linnaeus, 1767
    » Subspecies Fucus distichus subsp. anceps (Harvey & Ward ex Carruthers) H.T.Powell, 1957
    » Subspecies Fucus distichus subsp. edentatus (Bachelot de La Pylaie) H.T.Powell, 1957
    » Subspecies Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957
    » Variety Fucus distichus var. angustior Kützing
    » Forma Fucus distichus f. anceps (Harvey & Ward ex Carruthurs) Petrov, 1965 accepted as Fucus distichus subsp. anceps (Harvey & Ward ex Carruthers) H.T.Powell, 1957 (synonym)
    » Forma Fucus distichus f. edentatus (Bachelot de la Pylaie) Petrov, 1965 accepted as Fucus distichus subsp. edentatus (Bachelot de La Pylaie) H.T.Powell, 1957
    » Forma Fucus distichus f. latifrons (Foslie) Petrov, 1965 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus distichus f. robustior (J.Agardh) Kjellman, 1883 accepted as Fucus distichus Linnaeus, 1767
    » Forma Fucus distichus f. tenuior (J.Agardh) Kjellman, 1883 accepted as Fucus distichus Linnaeus, 1767
    » Variety Fucus distichus var. miclonensis (De La Pylaie) Kleen, 1874 accepted as Fucus distichus Linnaeus, 1767
    » Variety Fucus distichus var. robustior J.Agardh, 1868 accepted as Fucus distichus Linnaeus, 1767
    » Variety Fucus distichus var. tenuior J.Agardh, 1868 accepted as Fucus distichus Linnaeus, 1767
    » Variety Fucus distichus var. latior Kützing (uncertain)
    » Variety Fucus distichus var. miclonenesis (De la Pylaie) Kleen (uncertain)
  » Species Fucus evesiculosus Bory de Saint-Vincent
  » Species Fucus exilis R.Brown
  » Species Fucus filiformis S.G.Gmelin, 1768
  » Species Fucus fistulosus Huds.
  » Species Fucus flabellum Bertoloni
  » Species Fucus fuecii De la Pylaie
  » Species Fucus fungosus Desf.
  » Species Fucus funiformis Gunnerus
  » Species Fucus guiryi Zardi, Nicastro, E.S.Serrão & G.A.Pearson, 2011
  » Species Fucus heterophyllus C.L.Willdenow, 1794
  » Species Fucus radicans L.Bergström & L.Kautsky, 2005
  » Species Fucus serratus Linnaeus, 1753
    » Forma Fucus serratus f. abbreviatus Kjellman, 1883 accepted as Fucus serratus Linnaeus, 1753
    » Forma Fucus serratus f. angustus Kjellman, 1883 accepted as Fucus serratus Linnaeus, 1753
    » Forma Fucus serratus f. arcticus (J.Agardh) Kjellman, 1880 accepted as Fucus serratus Linnaeus, 1753
    » Forma Fucus serratus f. elongatus Kjellman, 1890 accepted as Fucus serratus Linnaeus, 1753
    » Forma Fucus serratus f. grandifrons Kjellman, 1883 accepted as Fucus serratus Linnaeus, 1753
    » Forma Fucus serratus f. laciniatus Kjellman, 1890 accepted as Fucus serratus Linnaeus, 1753
    » Variety Fucus serratus var. angustifolius Stackhouse, 1816 accepted as Fucus serratus Linnaeus, 1753
    » Variety Fucus serratus var. arcticus J.Agardh, 1868 accepted as Fucus serratus Linnaeus, 1753
    » Variety Fucus serratus var. integer Turner, 1809 accepted as Fucus serratus Linnaeus, 1753
    » Variety Fucus serratus var. integerrimus C.Agardh, 1820 accepted as Fucus serratus Linnaeus, 1753
    » Variety Fucus serratus var. lacinatus Greville, 1890 accepted as Fucus serratus Linnaeus, 1753
    » Variety Fucus serratus var. latifolius Turner, 1809 accepted as Fucus serratus Linnaeus, 1753
  » Species Fucus sherardii
  » Species Fucus spiralis Linnaeus, 1753
    » Variety Fucus spiralis var. lutarius (Kützing) Sauvageau, 1908
    » Forma Fucus spiralis f. arenicola Hamel, 1939 accepted as Fucus spiralis Linnaeus, 1753
    » Forma Fucus spiralis f. borealis Kjellman, 1883 accepted as Fucus spiralis Linnaeus, 1753
    » Forma Fucus spiralis f. limitaneus (Montagne) Børgesen, 1926 accepted as Fucus guiryi Zardi, Nicastro, E.S.Serrão & G.A.Pearson, 2011 (synonym)
    » Forma Fucus spiralis f. nanus (Kjellman) Batters, 1902 accepted as Fucus spiralis Linnaeus, 1753
    » Variety Fucus spiralis var. limitaneus (Montagne) I.M.Pérez-Ruzafa, 2001 accepted as Fucus guiryi Zardi, Nicastro, E.S.Serrão & G.A.Pearson, 2011
    » Variety Fucus spiralis var. nanus (Kjellman) S.M.Baker & Bohling, 1916 accepted as Fucus spiralis Linnaeus, 1753
    » Variety Fucus spiralis var. nanus (Stackhouse) Batters, 1902 accepted as Fucus spiralis Linnaeus, 1753 (synonym)
    » Variety Fucus spiralis var. platycarpus Batters, 1902 accepted as Fucus guiryi Zardi, Nicastro, E.S.Serrão & G.A.Pearson, 2011 (synonym)
    » Variety Fucus spiralis var. typicus Børgesen, 1902 accepted as Fucus spiralis Linnaeus, 1753 (synonym)
  » Species Fucus tremella
  » Species Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. gracillimus Collins, 1900
    » Forma Fucus vesiculosus f. mytili (Nienburg) Mathieson & Dawes, 2017
    » Forma Fucus vesiculosus f. volubilis (Goodenough & Woodward) A.C.Mathieson & Dawes, 2017
    » Variety Fucus vesiculosus var. compressus Kjellman, 1890
    » Variety Fucus vesiculosus var. linearis (Hudson) Kützing, 1849
    » Variety Fucus vesiculosus var. vadorum Areschoug, 1868
    » Forma Fucus vesiculosus f. abbreviatus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. acutus Lyngbye, 1819 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. angustifolius (C.Agardh) Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. angustifrons (Gobi) Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. angustifrons Gobi, 1878 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. balticus (C.Agardh) Dannenberg, 1927 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. balticus Levring, 1940 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. crispus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. elongatus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. filiformis (C.Agardh) Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. flabellatus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. fluviatilis Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. lanceolatus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. latus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. limicola F.S.Collins, 1906 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. linearis (Hudson) H.T.Powell, 1957 accepted as Fucus vesiculosus var. linearis (Hudson) Kützing, 1849
    » Forma Fucus vesiculosus f. mytili (Nienburg) Nienhuis, 1970 accepted as Fucus vesiculosus f. mytili (Nienburg) Mathieson & Dawes, 2017
    » Forma Fucus vesiculosus f. nanus (C.Agardh) Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. plicatus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. pseudoceranoides (Areschoug) Kleen, 1874 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. racemosus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. robustus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. sphaerocarpus (J.Agardh) Kleen, 1874 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. spiralis (Linnaeus) Batters, 1890 accepted as Fucus spiralis Linnaeus, 1753
    » Forma Fucus vesiculosus f. subecostatus (C.Agardh) Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. subfusiformis Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. subglobosus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. tenuis Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. terminalis Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. turgidus (Kjellman) Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. turgidus Kjellman, 1883 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. vadorum (Areschoug) Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. vadorum (Areschoug) Kleen, 1874 accepted as Fucus vesiculosus Linnaeus, 1753
    » Forma Fucus vesiculosus f. vadorum Areschoug, 1868 accepted as Fucus vesiculosus Linnaeus, 1753 (synonym)
    » Forma Fucus vesiculosus f. volubilis (Goodenough & Woodward) H.T.Powell, 1963 accepted as Fucus vesiculosus var. volubilis Goodenough & Woodward, 1797
    » Subspecies Fucus vesiculosus subsp. pseudoceranoides Areschoug, 1868 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. aestuarii Lami, 1938 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. alternans C.Agardh, 1820 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. angustifolius C.Agardh, 1817 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. axilaris (J.Agardh) Miranda, 1931 accepted as Fucus vesiculosus var. volubilis Goodenough & Woodward, 1797
    » Variety Fucus vesiculosus var. axillaris Sauvageau, 1897 accepted as Fucus vesiculosus var. volubilis Goodenough & Woodward, 1797
    » Variety Fucus vesiculosus var. balticus (C.Agardh) Areschoug, 1847 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. ceratiformis Wahlenberg, 1826 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. chondriformis J.Agardh, 1836 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. divaricatus (Linnaeus) Goodenough & Woodward, 1797 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. evesiculosus Cotton, 1912 accepted as Fucus vesiculosus var. linearis (Hudson) Kützing, 1849
    » Variety Fucus vesiculosus var. filiformis C.Agardh, 1819 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. grandifrons C.Agardh, 1821 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. inflatus (Linnaeus) C.Agardh, 1810 accepted as Fucus evanescens C.Agardh, 1820
    » Variety Fucus vesiculosus var. laterifructus Greville, 1828 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. limitaneus Montagne, 1840 accepted as Fucus guiryi Zardi, Nicastro, E.S.Serrão & G.A.Pearson, 2011 (synonym)
    » Variety Fucus vesiculosus var. longissimus Clemente, 1807 accepted as Fucus vesiculosus var. volubilis Goodenough & Woodward, 1797
    » Variety Fucus vesiculosus var. lutarius Chauvin ex J.Kickx f., 1856 accepted as Fucus spiralis var. lutarius (Kützing) Sauvageau, 1908
    » Variety Fucus vesiculosus var. monocystus C.Agardh, 1820 accepted as Fucus vesiculosus var. volubilis Goodenough & Woodward, 1797
    » Variety Fucus vesiculosus var. muscoides Cotton, 1912 accepted as Fucus cottonii M.J.Wynne & Magne, 1991
    » Variety Fucus vesiculosus var. nanus C.Agardh, 1817 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. rigidus Wahlenberg, 1812 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. rotundatus Kjellman, 1890 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. sphaerocarpus J.Agardh, 1872 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. spiralis (Linnaeus) C.Agardh, 1810 accepted as Fucus spiralis Linnaeus, 1753
    » Variety Fucus vesiculosus var. spiralis Farlow, 1881 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. spiralis (Linnaeus) Roth, 1800 accepted as Fucus spiralis Linnaeus, 1753
    » Variety Fucus vesiculosus var. subecostatus C.Agardh, 1817 accepted as Fucus vesiculosus Linnaeus, 1753
    » Variety Fucus vesiculosus var. tricystus C.Agardh, 1820 accepted as Fucus vesiculosus var. volubilis Goodenough & Woodward, 1797
    » Variety Fucus vesiculosus var. volubilis Goodenough & Woodward, 1797 accepted as Fucus vesiculosus f. volubilis (Goodenough & Woodward) A.C.Mathieson & Dawes, 2017
    » Variety Fucus vesiculosus var. foliaceus Goodenough & Woodward (uncertain)
  » Species Fucus virsoides J.Agardh, 1868
  » Species Fucus abies-marinus S.G.Gmelin, 1768 accepted as Cystoseira abies-marina (S.G.Gmelin) C.Agardh, 1820 (synonym)
  » Species Fucus abrotanifolius Linnaeus, 1753 accepted as Cystoseira foeniculacea (Linnaeus) Greville, 1830
  » Species Fucus abrotanoides S.G.Gmelin, 1768 accepted as Cystoseira baccata (S.G.Gmelin) P.C.Silva, 1952 (synonym)
  » Species Fucus abscissus Turner, 1819 accepted as Melanthalia abscissa (Turner) J.D.Hooker & Harvey, 1845
  » Species Fucus acanthophorus J.V.Lamouroux, 1805 accepted as Acanthophora spicifera (M.Vahl) Børgesen, 1910
  » Species Fucus acerosus Forsskål, 1775 accepted as Gelidiella acerosa (Forsskål) Feldmann & Hamel, 1934
  » Species Fucus acetabulus Gouan, 1815 accepted as Kallymenia reniformis (Turner) J.Agardh, 1842 (synonym)
  » Species Fucus acicularis Wulfen, 1803 accepted as Chondracanthus acicularis (Roth) Fredericq, 1993
  » Species Fucus acicularis Esper, 1800 accepted as Cystoclonium purpureum (Hudson) Batters, 1902
  » Species Fucus acinaria S.G.Gmelin, 1768 accepted as Sargassum acinarium (Linnaeus) Setchell, 1933 (synonym)
  » Species Fucus acinarius Linnaeus, 1753 accepted as Sargassum acinarium (Linnaeus) Setchell, 1933
  » Species Fucus aculeatus Linnaeus, 1763 accepted as Desmarestia aculeata (Linnaeus) J.V.Lamouroux, 1813
  » Species Fucus aculeatus Esper, 1798 accepted as Cystoseira usneoides (Linnaeus) M.Roberts, 1968
  » Species Fucus aeruginosus Turner, 1811 accepted as Gracilaria multipartita (Clemente) Harvey, 1846 (synonym)
  » Species Fucus agarum S.G.Gmelin, 1768 accepted as Agarum clathratum Dumortier, 1822
  » Species Fucus alatus Hudson, 1762 accepted as Membranoptera alata (Hudson) Stackhouse, 1809
  » Species Fucus albidus Esper, 1800 accepted as Gracilaria gracilis (Stackhouse) Steentoft, L.M.Irvine & Farnham, 1995
  » Species Fucus albus Hudson, 1762 accepted as Ahnfeltia plicata (Hudson) Fries, 1836
  » Species Fucus alveatus Turner, 1819 accepted as Psilophycus alveatus (Turner) W.A.Nelson, Leister & Hommersand, 2011 (synonym)
  » Species Fucus alveolatus Esper, 1799 accepted as Mastocarpus stellatus (Stackhouse) Guiry, 1984 (synonym)
  » Species Fucus amansii J.V.Lamouroux, 1805 accepted as Gelidium amansii (J.V.Lamouroux) J.V.Lamouroux, 1813
  » Species Fucus ambiguus Clemente, 1807 accepted as Dictyopteris polypodioides (A.P.De Candolle) J.V.Lamouroux, 1809
  » Species Fucus amphibius Hudson, 1778 accepted as Bostrychia scorpioides (Hudson) Montagne, 1842
  » Species Fucus anceps Harvey & Ward ex Carruthers, 1864 accepted as Fucus distichus subsp. anceps (Harvey & Ward ex Carruthers) H.T.Powell, 1957
  » Species Fucus angustifolius Turner, 1811 accepted as Sargassum angustifolium C.Agardh, 1820
  » Species Fucus anomalus Pallas, 1766 accepted as Sporochnus anomalus (Pallas) M.J.Wynne, 2003
  » Species Fucus antarcticus Chamisso, 1822 accepted as Durvillaea antarctica (Chamisso) Hariot, 1892
  » Species Fucus aquifolius Turner, 1807 accepted as Sargassum aquifolium (Turner) C.Agardh, 1820
  » Species Fucus arbuscula A.P.de Candolle, 1805 accepted as Bryopsis plumosa (Hudson) C.Agardh, 1823 (synonym)
  » Species Fucus areschougii Kjellman, 1890 accepted as Fucus spiralis Linnaeus, 1753
  » Species Fucus articulatus Forsskål, 1775 accepted as Hormophysa cuneiformis (J.F.Gmelin) P.C.Silva, 1987 (synonym)
  » Species Fucus articulatus (Hudson) Lightfoot, 1777 accepted as Lomentaria articulata (Hudson) Lyngbye, 1819 (synonym)
  » Species Fucus asparagoides Woodward, 1794 accepted as Bonnemaisonia asparagoides (Woodward) C.Agardh, 1822
  » Species Fucus asplenioides Esper, 1804 accepted as Ptilota asplenioides (Esper) C.Agardh, 1822
  » Species Fucus australis Sonder, 1845 accepted as Myriodesma quercifolium (Bory de Saint-Vincent) J.Agardh, 1848
  » Species Fucus axillaris J.Agardh, 1868 accepted as Fucus vesiculosus var. volubilis Goodenough & Woodward, 1797 (synonym)
    » Variety Fucus axillaris var. scorteus Turner, 1811 (uncertain, uncertain taxonomic status subjected to verification)
  » Species Fucus axillaris R.Brown ex Turner, 1811 accepted as Seirococcus axillaris (R.Brown ex Turner) Greville, 1830
  » Species Fucus babingtonii Harvey, 1860 accepted as Silvetia babingtonii (Harvey) E.A.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999
  » Species Fucus baccatus S.G.Gmelin, 1768 accepted as Cystoseira baccata (S.G.Gmelin) P.C.Silva, 1952
  » Species Fucus baccifer Turner, 1802 accepted as Sargassum natans (Linnaeus) Gaillon, 1828
  » Species Fucus baccularia Mertens, 1819 accepted as Sargassum baccularia (Mertens) C.Agardh, 1824
  » Species Fucus baillouviana S.G.Gmelin, 1768 accepted as Dasya baillouviana (S.G.Gmelin) Montagne, 1841
  » Species Fucus balticus C.Agardh, 1814 accepted as Fucus vesiculosus Linnaeus, 1753
  » Species Fucus bangii Hornemann, 1813 accepted as Phyllophora crispa (Hudson) P.S.Dixon, 1964
  » Species Fucus banksii Turner, 1808 accepted as Hormosira banksii (Turner) Decaisne, 1842
  » Species Fucus barbatus Goodenough & Woodward, 1797 accepted as Cystoseira barbata (Stackhouse) C.Agardh, 1820
  » Species Fucus barbatus Gunnerus, 1772 accepted as Devaleraea ramentacea (Linnaeus) Guiry, 1982
  » Species Fucus barbatus Linnaeus, 1753 accepted as Cystoseira foeniculacea (Linnaeus) Greville, 1830 (synonym)
    » Variety Fucus barbatus var. mucronatus (Turner) Stackh. (uncertain)
  » Species Fucus bifidus Hudson, 1778 accepted as Rhodophyllis divaricata (Stackhouse) Papenfuss, 1950
  » Species Fucus bifidus S.G.Gmelin, 1768 accepted as Arthrothamnus bifidus (S.G.Gmelin) J.Agardh, 1868
  » Species Fucus bifurcatus Velley, 1792 accepted as Bifurcaria bifurcata R.Ross, 1958
  » Species Fucus bifurcatus Gunnerus, 1766 accepted as Laminaria digitata (Hudson) J.V.Lamouroux, 1813 (synonym)
  » Species Fucus biserratus Thunberg, 1815 accepted as Sargassum fulvellum (Turner) C.Agardh, 1820
  » Species Fucus botryocarpus Turner, 1819 accepted as Botryocarpa prolifera Greville, 1830
  » Species Fucus botryoides Wulfen, 1791 accepted as Botryocladia botryoides (Wulfen) Feldmann, 1941
  » Species Fucus botryoides Turner, 1811 accepted as Laurencia botryoides (C.Agardh) Gaillon, 1828
  » Species Fucus bracteatus S.G.Gmelin, 1768 accepted as Gigartina bracteata (S.G.Gmelin) Setchell & N.L.Gardner, 1933
  » Species Fucus brodiei Turner, 1809 accepted as Coccotylus brodiei (Turner) Kützing, 1843
  » Species Fucus brownii Turner, 1819 accepted as Cystophora brownii (Turner) J.Agardh, 1848
  » Species Fucus bryum Strøm, 1788 accepted as Cladostephus spongiosus (Hudson) C.Agardh, 1817
  » Species Fucus buccinalis Linnaeus, 1771 accepted as Ecklonia maxima (Osbeck) Papenfuss, 1940
  » Species Fucus bulbosus Hudson, 1778 accepted as Saccorhiza polyschides (Lightfoot) Batters, 1902
  » Species Fucus bullatus O.F.Müller, 1777 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805
  » Species Fucus bursa-pastoris S.G.Gmelin, 1768 accepted as Gracilaria bursa-pastoris (S.G.Gmelin) P.C.Silva, 1952 (synonym)
  » Species Fucus bursigerus J.Agardh, 1868 accepted as Fucus evanescens C.Agardh, 1820
  » Species Fucus bursus (Linnaeus) Turner, 1811 accepted as Codium bursa (Olivi) C.Agardh, 1817
  » Species Fucus byssoides Goodenough & Woodward, 1797 accepted as Vertebrata byssoides (Goodenough & Woodward) Kuntze, 1891
  » Species Fucus cabrerae Clemente, 1807 accepted as Carpomitra costata (Stackhouse) Batters, 1902
  » Species Fucus cactoides Turner, 1809 accepted as Caulerpa cactoides (Turner) C.Agardh, 1817
  » Species Fucus caespitosus Stackhouse, 1795 accepted as Gelidium corneum var. caespitosum (Turner) J.Agardh, 1851 (synonym)
  » Species Fucus canalicularioides Clemente, 1807 accepted as Liagora distenta (Mertens ex Roth) J.V.Lamouroux, 1816
  » Species Fucus canaliculatus Linnaeus, 1767 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845 (synonym)
  » Species Fucus capensis S.G.Gemelin, 1768 accepted as Gelidium capense (S.G.Gmelin) P.C.Silva, 1987
  » Species Fucus capillaceus S.G.Gmelin, 1768 accepted as Pterocladiella capillacea (S.G.Gmelin) Santelices & Hommersand, 1997
  » Species Fucus capillaris Hudson, 1778 accepted as Gloiosiphonia capillaris (Hudson) Carmichael, 1833
  » Species Fucus caprinus Gunnerus, 1766 accepted as Polyides rotunda (Hudson) Gaillon, 1828
  » Species Fucus caprinus Vahl, 1794 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805
  » Species Fucus carnosus Schmidel, 1794 accepted as Dilsea carnosa (Schmidel) Kuntze, 1898
  » Species Fucus cartilagineus Linnaeus, 1753 accepted as Plocamium cartilagineum (Linnaeus) P.S.Dixon, 1967
  » Species Fucus cartilagineus Forsskål, 1775 accepted as Phycodrys rubens (Linnaeus) Batters, 1902
  » Species Fucus caudatus Labillardière, 1807 accepted as Perithalia caudata (Labillardière) Womersley, 1967
  » Species Fucus cephalornithos Labillardière, 1807 accepted as Caulocystis cephalornithos (Labillardière) J.E. Areschoug, 1854
  » Species Fucus cervicornis Turner, 1808 accepted as Gracilaria cervicornis (Turner) J.Agardh, 1852
  » Species Fucus chemnitzia Esper, 1800 accepted as Caulerpa chemnitzia (Esper) J.V.Lamouroux, 1809 (synonym)
  » Species Fucus chondrophyllus R.Brown ex Turner, 1819 accepted as Xiphophora chondrophylla (R.Brown ex Turner) Montagne ex Harvey, 1855
  » Species Fucus ciliatus Hudson, 1762 accepted as Calliblepharis ciliata (Hudson) Kützing, 1843
  » Species Fucus cirrhosus Turner, 1807 accepted as Plocamium cirrhosum (Turner) M.J.Wynne, 2002
  » Species Fucus clathrus S.G.Gmelin, 1768 accepted as Thalassiophyllum clathrus (S.G.Gmelin) Postels & Ruprecht, 1840 (synonym)
  » Species Fucus claudei Turner, 1811 accepted as Claudea elegans J.V.Lamouroux, 1813
  » Species Fucus clavatus J.V.Lamouroux, 1805 accepted as Gelidium clavatum (J.V.Lamouroux) J.V.Lamouroux, 1813
  » Species Fucus clavellosus Lightfoot ex Turner, 1802 accepted as Lomentaria clavellosa (Lightfoot ex Turner) Gaillon, 1828
  » Species Fucus clavifer Turner, 1807 accepted as Caulerpa racemosa (Forsskål) J.Agardh, 1873
  » Species Fucus coccineus Hudson, 1778 accepted as Plocamium cartilagineum (Linnaeus) P.S.Dixon, 1967 (synonym)
  » Species Fucus commersonii J.V.Lamouroux ex Montagne, 1847 accepted as Cystoseira myrica (S.G.Gmelin) C.Agardh, 1820 (synonym)
  » Species Fucus comosus Poiret, 1808 accepted as Sargassum desfontainesii (Turner) C.Agardh, 1820 (synonym)
    » Variety Fucus comosus var. subintegerrimus Mertens (uncertain)
    » Variety Fucus comosus var. subintegrifolius Turner (uncertain)
  » Species Fucus comosus Labillardière, 1807 accepted as Phyllospora comosa (Labillardière) C.Agardh, 1839
  » Species Fucus complanatus Clemente, 1807 accepted as Pterosiphonia complanata (Clemente) Falkenberg, 1897
  » Species Fucus compressus Esper, 1799 accepted as Cystoseira compressa (Esper) Gerloff & Nizamuddin, 1975
  » Species Fucus compressus C.Agardh, 1824 accepted as Silvetia compressa (J.Agardh) E.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999
  » Species Fucus concatenatus Linnaeus, 1753 accepted as Cystoseira foeniculacea (Linnaeus) Greville, 1830 (unaccepted)
  » Species Fucus concinnus R.Brown ex Turner, 1811 accepted as Trematocarpus concinnus (R.Brown ex Turner) De Toni, 1900 (unaccepted)
  » Species Fucus confertus R.Brown ex Turner, 1811 accepted as Leptophyllis conferta (R.Brown ex Turner) J.Agardh, 1876 (unaccepted)
  » Species Fucus confervoides Linnaeus, 1763 accepted as Gracilariopsis longissima (S.G.Gmelin) Steentoft, L.M.Irvine & Farnham, 1995 (unaccepted, synonym)
    » Variety Fucus confervoides var. albidus (Hudson) Turner
    » Variety Fucus confervoides var. fastigiatus Clemente
    » Variety Fucus confervoides var. implexus Turner
    » Variety Fucus confervoides var. implexus Bertoloni
    » Variety Fucus confervoides var. procerrimus (Esper) Turner
    » Variety Fucus confervoides var. ramosissimus Bertoloni
    » Variety Fucus confervoides var. sordidus Bertoloni
    » Variety Fucus confervoides var. subsimplex Clemente
    » Variety Fucus confervoides var. gracilis (Stackhouse) Turner, 1802 accepted as Gracilaria gracilis (Stackhouse) Steentoft, L.M.Irvine & Farnham, 1995
    » Variety Fucus confervoides var. macrocarpus Clemente, 1807 accepted as Chondracanthus acicularis (Roth) Fredericq, 1993
  » Species Fucus confervoides Hudson, 1762 accepted as Rhodomela confervoides (Hudson) P.C.Silva, 1952 (unaccepted)
  » Species Fucus confluens R.Brown ex Turner, 1811 accepted as Carpoglossum confluens (R.Brown ex Turner) Kützing, 1843 (unaccepted)
  » Species Fucus congestus R.Brown ex Turner, 1809 accepted as Areschougia congesta (R.Brown ex Turner) J.Agardh, 1872 (unaccepted)
  » Species Fucus constrictus Turner, 1809-1811 accepted as Polyopes constrictus (Turner) J.Agardh, 1851 (unaccepted)
  » Species Fucus constrictus Harvey, 1838 accepted as Axillariella constricta (Kützing) Gruber, 1896 (unaccepted)
  » Species Fucus contortus S.G.Gmelin, 1768 accepted as Dumontia contorta (S.G.Gmelin) Ruprecht, 1850 (unaccepted)
  » Species Fucus corallinus O.F.Müller, 1777 accepted as Cystoclonium purpureum (Hudson) Batters, 1902 (unaccepted)
  » Species Fucus coralloides Poiret, 1808 accepted as Hydropuntia edulis (S.G.Gmelin) Gurgel & Fredericq, 2004 (unaccepted)
  » Species Fucus corallorhiza Turner, 1808 accepted as Plocamium corallorhiza (Turner) J.D.Hooker & Harvey, 1845 (unaccepted)
  » Species Fucus cordatus Turner, 1809 accepted as Iridaea cordata (Turner) Bory de Saint-Vincent, 1826 (unaccepted)
  » Species Fucus cornatus Linnaeus, 1771 accepted as Gelidium vittatum (Linnaeus) Kützing, 1843 (unaccepted)
  » Species Fucus corneus Hudson, 1762 accepted as Gelidium corneum (Hudson) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus corneus Zoega, 1772 accepted as Chordaria flagelliformis (O.F.Müller) C.Agardh, 1817 (unaccepted)
    » Variety Fucus corneus var. deformis Turner
    » Variety Fucus corneus var. filicinus (Hudson) Goodenough & Woodward
    » Variety Fucus corneus var. planus Clemente
    » Variety Fucus corneus var. sericeus Clemente
    » Variety Fucus corneus var. uniformis Goodenough & Woodward
    » Variety Fucus corneus var. attenuatus Turner, 1819 accepted as Gelidium attenuatum (Turner) Thuret, 1892 (synonym)
    » Variety Fucus corneus var. clavifer Turner, 1819 accepted as Gelidium pulchellum (Turner) Kützing, 1868 (synonym)
    » Variety Fucus corneus var. pinnatus (Hudson) Goodenough & Woodward, 1797 accepted as Pterocladiella capillacea (S.G.Gmelin) Santelices & Hommersand, 1997 (synonym)
    » Variety Fucus corneus var. pulchellus Turner, 1819 accepted as Gelidium pulchellum (Turner) Kützing, 1868
    » Variety Fucus corneus var. sesquipedalis Clemente, 1807 accepted as Gelidium corneum (Hudson) J.V.Lamouroux, 1813
    » Variety Fucus corneus var. setaceus Turner, 1811 accepted as Gelidiella acerosa (Forsskål) Feldmann & Hamel, 1934
    » Variety Fucus corneus var. spiniformis (J.V.Lamouroux) Turner, 1811 accepted as Gelidiella acerosa (Forsskål) Feldmann & Hamel, 1934
    » Variety Fucus corneus var. capillaceus Turner, 1802 (uncertain)
  » Species Fucus corniculatus R.Brown ex Turner, 1811 accepted as Gracilaria corniculata (C.Agardh) J.Agardh, 1852 (unaccepted)
  » Species Fucus corniculatus Wulfen, 1786 accepted as Treptacantha abies-marina (S.G.Gmelin) Kützing, 1843 (unaccepted)
  » Species Fucus cornucopiae Mertens, 1829 accepted as Arthrothamnus bifidus (S.G.Gmelin) J.Agardh, 1868 (unaccepted)
  » Species Fucus cornutus Turner, 1811 accepted as Plocamium cornutum (Turner) Harvey, 1849 (unaccepted)
  » Species Fucus coronopifolius Zoega, 1772 accepted as Mastocarpus stellatus (Stackhouse) Guiry, 1984 (unaccepted)
  » Species Fucus coronopifolius Goodenough & Woodward, 1797 accepted as Sphaerococcus coronopifolius Stackhouse, 1797 (unaccepted)
  » Species Fucus corymbiferus S.G.Gmelin, 1768 accepted as Odonthalia corymbifera (S.G.Gmelin) Greville, 1830 (unaccepted)
  » Species Fucus costatus Stackhouse, 1802 accepted as Carpomitra costata (Stackhouse) Batters, 1902 (unaccepted)
  » Species Fucus costatus Turner, 1819 accepted as Costaria costata (C.Agardh) De A.Saunders, 1895 (unaccepted)
  » Species Fucus cottoni M.J.Wynne & Magne, 1991 accepted as Fucus cottonii M.J.Wynne & Magne, 1991 (unaccepted)
  » Species Fucus crassipes Mertens ex Turner, 1809 accepted as Stephanocystis crassipes (Mertens ex Turner) Draisma, Ballesteros, F.Rousseau & T.Thibaut, 2010 (unaccepted, synonym)
  » Species Fucus crenatus S.G.Gmelin, 1768 accepted as Phycodrys rubens (Linnaeus) Batters, 1902 (unaccepted)
  » Species Fucus crenulatus Turner, 1802 accepted as Gymnogongrus crenulatus (Turner) J.Agardh, 1851 (unaccepted)
  » Species Fucus cribrosus Mertens f., 1829 accepted as Agarum turneri Postels & Ruprecht, 1840 (unaccepted)
  » Species Fucus crinalis Hare ex Turner, 1819 accepted as Gelidium crinale (Hare ex Turner) Gaillon, 1828 (unaccepted)
    » Variety Fucus crinalis var. ex Turner
  » Species Fucus crinitus Desfontaines, 1799 accepted as Cystoseira crinita Duby, 1830 (unaccepted, synonym)
  » Species Fucus crinitus S.G.Gmelin, 1768 accepted as Tichocarpus crinitus (S.G.Gmelin) Ruprecht, 1850 (unaccepted)
  » Species Fucus crispatus Hudson, 1778 accepted as Cryptopleura ramosa (Hudson) L.Newton, 1931 (unaccepted)
  » Species Fucus crispatus Linnaeus, 1767 accepted as Cryptopleura ramosa (Hudson) L.Newton, 1931 (unaccepted, synonym)
  » Species Fucus crispus Linnaeus, 1767 accepted as Chondrus crispus Stackhouse, 1797 (unaccepted, synonym)
  » Species Fucus crispus Hudson, 1762 accepted as Phyllophora crispa (Hudson) P.S.Dixon, 1964 (unaccepted)
  » Species Fucus crispus Forsskål, 1775 accepted as Sargassum notarisii Zanardini, 1858 (unaccepted)
  » Species Fucus cristatus Sommerfelt, 1826 accepted as Euthora cristata (C.Agardh) J.Agardh, 1847 (unaccepted)
  » Species Fucus cristatus Linnaeus ex Turner, 1808 accepted as Euthora cristata (C.Agardh) J.Agardh, 1847 (unaccepted, synonym)
  » Species Fucus cristatus Withering, 1796 accepted as Cryptopleura ramosa (Hudson) L.Newton, 1931 (unaccepted, synonym)
  » Species Fucus cuneiformis J.F.Gmelin, 1792 accepted as Hormophysa cuneiformis (J.F.Gmelin) P.C.Silva, 1987 (unaccepted)
  » Species Fucus cupressoides Vahl, 1802 accepted as Caulerpa cupressoides (Vahl) C.Agardh, 1817 (unaccepted)
  » Species Fucus cyanospermus Delile, 1813 accepted as Laurencia cyanosperma (Delile) Gaillon, 1828 (unaccepted)
  » Species Fucus cypellon Bertoloni, 1818 accepted as Phyllophora herediae (Clemente) J.Agardh, 1842 (unaccepted)
  » Species Fucus dasyphyllus Woodward, 1794 accepted as Chondria dasyphylla (Woodward) C.Agardh, 1817 (unaccepted, synonym)
    » Variety Fucus dasyphyllus var. articulatus Turner (uncertain)
  » Species Fucus debilis Forsskål, 1775 accepted as Gracilaria debilis (Forsskål) Børgesen, 1932 (unaccepted)
  » Species Fucus decipiens R.Brown ex Turner, 1811 accepted as Phyllotricha decipiens (R.Brown ex Turner) R.R.M.Dixon & Huisman, 2012 (unaccepted)
  » Species Fucus decurrens R.Brown ex Turner, 1811 accepted as Sargassopsis decurrens (R.Brown ex Turner) Trevisan, 1843 (unaccepted, synonym)
  » Species Fucus degener Esper, 1804 accepted as Mastocarpus stellatus (Stackhouse) Guiry, 1984 (unaccepted, synonym)
  » Species Fucus delicatulus (Gunnerus) Vahl, 1797 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted)
  » Species Fucus dentatus Linnaeus, 1767 accepted as Odonthalia dentata (Linnaeus) Lyngbye, 1819 (unaccepted)
  » Species Fucus denticulatus N.L.Burman, 1768 accepted as Eucheuma denticulatum (N.L.Burman) Collins & Hervey, 1917 (unaccepted)
  » Species Fucus denticulatus Forsskål, 1775 accepted as Sargassum dentifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus dentifolius Turner, 1808 accepted as Sargassum dentifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus desfontainesii Turner, 1811 accepted as Sargassum desfontainesii (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus desvauxii Mertens, 1819 accepted as Sargassum desvauxii (Mertens) C.Agardh, 1820 (unaccepted)
  » Species Fucus devoniensis Greville, 1821 accepted as Ahnfeltiopsis devoniensis (Greville) P.C.Silva & DeCew, 1992 (unaccepted, synonym)
  » Species Fucus dichotomus Lepechin, 1775 accepted as Fimbrifolium dichotomum (Lepechin) G.I.Hansen, 1980 (unaccepted)
  » Species Fucus dichotomus (Hudson) Bertoloni, 1819 accepted as Dictyota dichotoma (Hudson) J.V.Lamouroux, 1809 (unaccepted, synonym)
  » Species Fucus digitatus Hudson, 1762 accepted as Laminaria digitata (Hudson) J.V.Lamouroux, 1813 (unaccepted, synonym)
  » Species Fucus dilatatus Turner, 1811 accepted as Gymnogongrus dilatatus (Turner) J.Agardh, 1851 (unaccepted)
  » Species Fucus discors Linnaeus, 1767 accepted as Cystoseira foeniculacea (Linnaeus) Greville, 1830 (unaccepted)
  » Species Fucus distentus Mertens ex Roth, 1806 accepted as Liagora distenta (Mertens ex Roth) J.V.Lamouroux, 1816 (unaccepted)
  » Species Fucus divaricatus R.Brown ex Turner, 1809 accepted as Hymenocladia divaricata Harvey, 1855 (unaccepted)
  » Species Fucus divaricatus Linnaeus, 1753 accepted as Fucus vesiculosus Linnaeus, 1753 (unaccepted)
  » Species Fucus divergens J.Agardh, 1872 accepted as Fucus ceranoides Linnaeus, 1753 (unaccepted)
  » Species Fucus diversifolius Turner, 1800 accepted as Sargassum diversifolium (Turner) C.Agardh, 1824 (unaccepted)
  » Species Fucus dorycarpus Turner, 1809 accepted as Scytothalia dorycarpa (Turner) Greville, 1830 (unaccepted)
  » Species Fucus dulcis S.G.Gmelin, 1768 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted)
  » Species Fucus echinatus Stackhouse, 1797 accepted as Mastocarpus stellatus (Stackhouse) Guiry, 1984 (unaccepted, synonym)
  » Species Fucus echinatus Poiret, 1808 accepted as Sarcothalia stiriata (Turner) Leister, 1993 (unaccepted, synonym)
  » Species Fucus edentatus Bachelot de la Pylaie, 1830 accepted as Fucus distichus subsp. edentatus (Bachelot de La Pylaie) H.T.Powell, 1957 (unaccepted)
    » Forma Fucus edentatus f. angustior Bachelot de la Pylaie, 1829 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus edentatus f. contractus Kjellman, 1883 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus edentatus f. acutus Gardner (uncertain)
    » Forma Fucus edentatus f. costatus Gardner (uncertain)
    » Forma Fucus edentatus f. divaricatus Gardner (uncertain)
    » Forma Fucus edentatus f. divergens Gardner (uncertain)
    » Forma Fucus edentatus f. hesperius Gardner (uncertain)
    » Forma Fucus edentatus f. typicus Kjellman (uncertain)
    » Variety Fucus edentatus var. hesperius Unknown authority (uncertain)
  » Species Fucus edulis S.G.Gmelin, 1768 accepted as Hydropuntia edulis (S.G.Gmelin) Gurgel & Fredericq, 2004 (unaccepted, synonym)
  » Species Fucus edulis Stackhouse, 1801 accepted as Dilsea carnosa (Schmidel) Kuntze, 1898 (unaccepted)
  » Species Fucus elminthoides Velley, 1792 accepted as Nemalion elminthoides (Velley) Batters, 1902 (unaccepted)
  » Species Fucus elongatus Linnaeus, 1753 accepted as Himanthalia elongata (Linnaeus) S.F.Gray, 1821 (unaccepted)
  » Species Fucus elongatus Gunnerus, 1772 accepted as Cystoclonium purpureum (Hudson) Batters, 1902 (unaccepted)
  » Species Fucus endiviifolius Lightfoot, 1777 accepted as Cryptopleura ramosa (Hudson) L.Newton, 1931 (unaccepted)
  » Species Fucus epiphyllus O.F.Müller, 1777 accepted as Phycodrys rubens (Linnaeus) Batters, 1902 (unaccepted)
  » Species Fucus erica-marina S.G.Gmelin accepted as Cystoseira spinosa Sauvageau, 1912 (unaccepted, synonym)
  » Species Fucus ericifolius Turner, 1808 accepted as Caulerpa cupressoides var. ericifolia (Turner) Weber-van Bosse, 1898 (unaccepted, synonym)
  » Species Fucus ericoides Linnaeus, 1763 accepted as Cystoseira tamariscifolia (Hudson) Papenfuss, 1950 (unaccepted, synonym)
  » Species Fucus erinaceus Turner, 1807 accepted as Nothogenia erinacea (Turner) P.G.Parkinson, 1983 (unaccepted)
  » Species Fucus esculentus Linnaeus, 1767 accepted as Alaria esculenta (Linnaeus) Greville, 1830 (unaccepted)
  » Species Fucus evanescens C.Agardh, 1820 accepted as Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957 (unaccepted)
    » Forma Fucus evanescens f. angustus Kjellman, 1877
    » Forma Fucus evanescens f. cuneatus Gardner
    » Forma Fucus evanescens f. ecostatus Gardner
    » Forma Fucus evanescens f. flabellatus Gardner
    » Forma Fucus evanescens f. irregularis Kjellman, 1889
    » Forma Fucus evanescens f. longifructus Setchell & Gardner
    » Forma Fucus evanescens f. megacephalus 'Kjellman'
    » Forma Fucus evanescens f. oregonensis Gardner
    » Forma Fucus evanescens f. pusillus Nagai
    » Forma Fucus evanescens f. robustus Setchell & Gardner
    » Forma Fucus evanescens f. stellatus Gardner
    » Forma Fucus evanescens f. typicus Kjellman
    » Subspecies Fucus evanescens subsp. arcticus Strömfelt
    » Subspecies Fucus evanescens subsp. edentatus (Da la Pylaie) Strömfelt
    » Subspecies Fucus evanescens subsp. norvegicus Strömfelt
    » Variety Fucus evanescens var. edentatus (De La Pylaie) Strömfelt, 1886
    » Forma Fucus evanescens f. arcticus Strömfelt, 1886 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. bersigerus (J.Agardh) Kjellman, 1877 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. bursigerus (J.Agardh) Kjellman, 1877 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. contractrus Kjellman, 1889 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. cornutus Kjellman, 1889 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. dendroides Strömfelt, 1886 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. macrocephalus Kjellman, 1889 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. magnificus Gardner, 1922 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. nanus Kjellman, 1877 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. norvegicus Strömfelt, 1886 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. pergrandis Kjellman, 1877 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus evanescens f. rudis Kjellman, 1889 accepted as Fucus evanescens C.Agardh, 1820
    » Variety Fucus evanescens var. cuneatus Unknown authority accepted as Fucus distichus Linnaeus, 1767
    » Variety Fucus evanescens var. ecostatus Unknown authority accepted as Fucus distichus Linnaeus, 1767
    » Variety Fucus evanescens var. oregonensis Unknown authority accepted as Fucus distichus Linnaeus, 1767
    » Forma Fucus evanescens f. cylindricus Nagai, 1935 (uncertain)
    » Forma Fucus evanescens f. fusiformis Nagai, 1935 (uncertain, uncertain taxonomic status subjected to verification)
    » Forma Fucus evanescens f. intermedius N.L.Gardner, 1922 (uncertain)
    » Forma Fucus evanescens f. limitatus Kjellman, 1889 (uncertain)
    » Forma Fucus evanescens f. marginatus N.L.Gardner, 1922 (uncertain)
    » Forma Fucus evanescens f. paramushirensis Nagai, 1935 (uncertain, uncertain taxonomic status subjected to verification)
  » Species Fucus excisus Forsskål, 1775 accepted as Fucus vesiculosus Linnaeus, 1753 (unaccepted)
  » Species Fucus excisus Linnaeus, 1753 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845 (unaccepted)
  » Species Fucus fascia O.F.Müller, 1778 accepted as Petalonia fascia (O.F.Müller) Kuntze, 1898 (unaccepted)
  » Species Fucus fasciculatus Turner, 1819 accepted as Laurencia fasciculata (Turner) Greville, 1830 (unaccepted)
  » Species Fucus fasciola Roth, 1797 accepted as Dictyota fasciola (Roth) J.V.Lamouroux, 1809 (unaccepted)
  » Species Fucus fastigiatus Linnaeus, 1753 accepted as Furcellaria lumbricalis (Hudson) J.V.Lamouroux, 1813 (unaccepted, synonym)
  » Species Fucus fastigiatus J.Agardh, 1841 accepted as Silvetia compressa (J.Agardh) E.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999 (unaccepted)
  » Species Fucus fibrosus Hudson, 1778 accepted as Cystoseira baccata (S.G.Gmelin) P.C.Silva, 1952 (unaccepted)
  » Species Fucus filamentosus Wulfen, 1803 accepted as Spyridia filamentosa (Wulfen) Harvey, 1833 (unaccepted)
  » Species Fucus filicinus Wulfen, 1791 accepted as Grateloupia filicina (J.V.Lamouroux) C.Agardh, 1822 (unaccepted)
  » Species Fucus filifolius C.Agardh, 1812 accepted as Sargassum filifolium (C.Agardh) C.Agardh, 1824 (unaccepted)
  » Species Fucus filiformis Strøm, 1762 accepted as Chorda filum (Linnaeus) Stackhouse, 1797 (unaccepted)
    » Forma Fucus filiformis f. typicus E.S.Sinova
    » Forma Fucus filiformis f. gmelinii J.Agardh (uncertain)
    » Forma Fucus filiformis f. pylaiei J.Agardh (uncertain)
    » Variety Fucus filiformis var. longifructus De la Pylaie (uncertain)
  » Species Fucus filiformis Hudson, 1762 accepted as Chondrus crispus var. filiformis (Hudson) Lyngbye, 1819 (unaccepted, synonym)
  » Species Fucus filum Linnaeus, 1753 accepted as Chorda filum (Linnaeus) Stackhouse, 1797 (unaccepted)
  » Species Fucus fimbriatus Hudson, 1778 accepted as Phyllophora pseudoceranoïdes (S.G.Gmelin) Newroth & A.R.A.Taylor ex P.S.Dixon & L.M.Irvine, 1977 (unaccepted)
  » Species Fucus fimbriatus Desfontaines, 1799 accepted as Cystoseira compressa (Esper) Gerloff & Nizamuddin, 1975 (unaccepted)
  » Species Fucus fimbriatus R.Brown ex Turner, 1811 accepted as Osmundaria fimbriata (J.V.Lamouroux) R.E.Norris, 1991 (unaccepted)
  » Species Fucus fissifolius Mertens, 1819 accepted as Sargassum fissifolium (Mertens) C.Agardh, 1823 (unaccepted, synonym)
  » Species Fucus flaccidus Turner, 1807 accepted as Carpoblepharis flaccida (J.V.Lamouroux) Kützing, 1849 (unaccepted)
  » Species Fucus flaccidus Labillardière, 1806 accepted as Cystophora flaccida J.Agardh, 1848 (unaccepted, synonym)
  » Species Fucus flagelliformis O.F.Müller, 1775 accepted as Chordaria flagelliformis (O.F.Müller) C.Agardh, 1817 (unaccepted)
  » Species Fucus flagellum S.G.Gmelin, 1768 accepted as Laminaria flagellum (S.G.Gmelin) Steudel, 1824 (unaccepted)
  » Species Fucus flavicans Mertens, 1819 accepted as Sargassum flavicans (Mertens) C.Agardh, 1820 (unaccepted)
  » Species Fucus flavus Linnaeus fil., 1782 accepted as Thaumasia flavia (Linnaeus) C.Agardh, 1824 (unaccepted)
  » Species Fucus flexuosus Esper, 1802 accepted as Carpophyllum flexuosum (Esper) Greville, 1830 (unaccepted)
  » Species Fucus floccosus Esper, 1802 accepted as Odonthalia floccosa (Esper) Falkenberg, 1901 (unaccepted)
  » Species Fucus floresii Clemente, 1807 accepted as Halymenia floresii (Clemente) C.Agardh, 1817 (unaccepted)
  » Species Fucus foeniculaceus Linnaeus, 1753 accepted as Cystoseira foeniculacea (Linnaeus) Greville, 1830 (unaccepted)
  » Species Fucus foliaceus Strøm, 1788 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted)
  » Species Fucus foliifer Forsskål, 1775 accepted as Gracilaria foliifera (Forsskål) Børgesen, 1932 (unaccepted)
  » Species Fucus foliosissimus Lamouroux, 1813 accepted as Sargassum vulgare var. foliosissimum (J.V.Lamouroux) C.Agardh, 1820 (unaccepted, synonym)
  » Species Fucus forsskalii Mertens, 1819 accepted as Sargassum notarisii Zanardini, 1858 (unaccepted)
  » Species Fucus forsteri Mertens ex Turner, 1809 accepted as Laurencia forsteri (Mertens ex Turner) Greville, 1830 (unaccepted)
  » Species Fucus fragilis Forsskål, 1775 accepted as Actinotrichia fragilis (Forsskål) Børgesen, 1932 (unaccepted)
  » Species Fucus fraxinifolius Mertens ex Turner, 1809 accepted as Neurymenia fraxinifolia (Mertens ex Turner) J.Agardh, 1863 (unaccepted)
  » Species Fucus fruticulosus Wulfen, 1791 accepted as Vertebrata fruticulosa (Wulfen) Kuntze, 1891 (unaccepted)
  » Species Fucus fueci Bachelot de la Pylaie, 1830 accepted as Fucus distichus Linnaeus, 1767 (unaccepted)
  » Species Fucus fulvellus Turner, 1808 accepted as Sargassum fulvellum (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus fungiformis Gunnerus, 1772 accepted as Ralfsia fungiformis (Gunnerus) Setchell & N.L.Gardner, 1924 (unaccepted)
  » Species Fucus furcatus C.Agardh, 1820 accepted as Fucus distichus Linnaeus, 1767 (unaccepted)
  » Species Fucus furcatus Esper, 1800 accepted as Fauchea repens (C.Agardh) Montagne & Bory de Saint-Vincent, 1846 (unaccepted)
  » Species Fucus furcellatus Linnaeus, 1763 accepted as Furcellaria lumbricalis (Hudson) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus furcellatus Mohr, 1786 accepted as Polyides rotunda (Hudson) Gaillon, 1828 (unaccepted)
  » Species Fucus gaertneri S.G.Gmelin, 1768 accepted as Sporochnus anomalus (Pallas) M.J.Wynne, 2003 (unaccepted)
  » Species Fucus gardneri P.C.Silva, 1953 accepted as Fucus distichus Linnaeus, 1767 (unaccepted, synonym)
  » Species Fucus gelatinosus Desfontaines, 1799 accepted as Laurencia obtusa var. gracilis (C.Agardh) Zanardini, 1847 (unaccepted, synonym)
  » Species Fucus gelatinus Esper, 1800 accepted as Betaphycus gelatinus (Esper) Doty ex P.C.Silva, 1996 (unaccepted)
  » Species Fucus giganteus Gaudichaud, 1826 accepted as Macrocystis pyrifera (Linnaeus) C.Agardh, 1820 (unaccepted)
  » Species Fucus gigartinus Linnaeus, 1759 accepted as Gigartina pistillata (S.G.Gmelin) Stackhouse, 1809 (unaccepted)
  » Species Fucus gigartinus Oeder, 1768 accepted as Euthora cristata (C.Agardh) J.Agardh, 1847 (unaccepted)
  » Species Fucus gladiatus Labillardière, 1807 accepted as Xiphophora gladiata (Labillardière) Montagne ex Kjellman, 1893 (unaccepted)
  » Species Fucus glandulosus Solander ex Turner, 1808 accepted as Microcladia glandulosa (Solander ex Turner) Greville, 1830 (unaccepted)
  » Species Fucus gracilis Stackhouse, 1801 accepted as Gracilaria gracilis (Stackhouse) Steentoft, L.M.Irvine & Farnham, 1995 (unaccepted)
  » Species Fucus graminifolius Lepechin, 1775 accepted as Devaleraea ramentacea (Linnaeus) Guiry, 1982 (unaccepted)
  » Species Fucus graminifolius Turner, 1819 accepted as Sargassum graminifolium C.Agardh, 1820 (unaccepted)
  » Species Fucus granateus J.V.Lamouroux, 1805 accepted as Gracilaria foliifera f. granatea (J.V.Lamouroux) Børgesen, 1938 (unaccepted, synonym)
  » Species Fucus granulatus Linnaeus, 1763 accepted as Cystoseira usneoides (Linnaeus) M.Roberts, 1968 (unaccepted)
  » Species Fucus griffithsiae Turner, 1808 accepted as Gymnogongrus griffithsiae (Turner) C.Martius, 1833 (unaccepted)
  » Species Fucus gulaman M.Blanco, 1837 accepted as Gracilaria gracilis (Stackhouse) Steentoft, L.M.Irvine & Farnham, 1995 (unaccepted)
  » Species Fucus hamulosus Esper, 1800 accepted as Hypnea hamulosa (Esper) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus harveyanus Decaisne, 1864 accepted as Hesperophycus californicus P.C.Silva, 1990 (unaccepted)
  » Species Fucus harveyanus Decaisne ex J.Agardh, 1868 accepted as Fucus ceranoides Linnaeus, 1753 (unaccepted)
  » Species Fucus helminthocorton (Schwendimann) Tourrette, 1782 accepted as Alsidium helminthochorton (Schwendimann) Kützing, 1843 (unaccepted, synonym)
  » Species Fucus hemiphyllus Turner, 1811 accepted as Sargassum hemiphyllum (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus herbaceus Turner, 1808 accepted as Desmarestia herbacea (Turner) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus herbaceus Hudson, 1778 accepted as Desmarestia ligulata (Stackhouse) J.V.Lamouroux, 1813 (unaccepted, synonym)
  » Species Fucus herediae Clemente, 1807 accepted as Phyllophora herediae (Clemente) J.Agardh, 1842 (unaccepted)
  » Species Fucus hetaerophyllus Clemente, 1807 accepted as Gelidium pusillum (Stackhouse) Le Jolis, 1863 (unaccepted)
  » Species Fucus heterophyllus Turner, 1808 accepted as Sargassum incisifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus hirsutus Linnaeus, 1767 accepted as Cladostephus spongiosus f. verticillatus (Lightfoot) Prud'homme van Reine, 1972 (unaccepted, synonym)
  » Species Fucus horneri Turner, 1808 accepted as Sargassum horneri (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus hybridus A.P.de Candolle, 1805 accepted as Osmundea hybrida (A.P.de Candolle) K.W.Nam, 1994 (unaccepted)
  » Species Fucus hyperboreus Gunnerus, 1766 accepted as Laminaria hyperborea (Gunnerus) Foslie, 1884 (unaccepted)
  » Species Fucus hypnoides R.Brown ex Turner, 1809 accepted as Caulerpa flexilis J.V.Lamouroux ex C.Agardh, 1823 (unaccepted)
  » Species Fucus hypoglossoides Stackhouse, 1801 accepted as Hypoglossum hypoglossoides (Stackhouse) Collins & Hervey, 1917 (unaccepted)
  » Species Fucus hypoglossum Woodward, 1794 accepted as Hypoglossum hypoglossoides (Stackhouse) Collins & Hervey, 1917 (unaccepted)
    » Variety Fucus hypoglossum var. minor Turner, 1802 (synonym)
  » Species Fucus ilicifolius Turner, 1807 accepted as Sargassum ilicifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus implexus Desfontaines, 1799 accepted as Dictyota implexa (Desfontaines) J.V.Lamouroux, 1809 (unaccepted, synonym)
  » Species Fucus incisifolius Turner, 1811 accepted as Sargassum incisifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus incurvus Hudson, 1762 accepted as Halopithys incurva (Hudson) Batters, 1902 (unaccepted)
  » Species Fucus inermis Brown ex Turner, 1811 accepted as Perithalia caudata (Labillardière) Womersley, 1967 (unaccepted, synonym)
  » Species Fucus inflatus Linnaeus, 1753 accepted as Fucus vesiculosus Linnaeus, 1753 (unaccepted, synonym)
    » Forma Fucus inflatus f. densus Kjellman, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. dilutus Kjellman, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. distichus (Linnaeus) Børgesen, 1902 accepted as Fucus distichus Linnaeus, 1767
    » Forma Fucus inflatus f. edentatus (De La Pylaie) Børgesen, 1902 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. expositus Jónsson, 1903 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. gracilis Kjellman, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. humilis Kjellman, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. latifrons Foslie, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. linearis (Oeder) Børgesen, 1902 accepted as Fucus distichus Linnaeus, 1767
    » Forma Fucus inflatus f. membranaceus Rosenvinge, 1898 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. murmanicus E.S.Sinova, 1914 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. nanus Kjellman, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. nordlandicus Kjellman, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. principalis Kjellman, 1890 accepted as Fucus evanescens C.Agardh, 1820 (synonym)
    » Forma Fucus inflatus f. pygmaeus Foslie, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Forma Fucus inflatus f. reductus Kjellman, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Variety Fucus inflatus var. edentatus (De La Pylaie) Rosenvinge, 1893 accepted as Fucus evanescens C.Agardh, 1820
    » Variety Fucus inflatus var. evanescens (C.Agardh) Rosenvinge, 1893 accepted as Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957
    » Variety Fucus inflatus var. finmarkicus Kjellman, 1890 accepted as Fucus evanescens C.Agardh, 1820
    » Variety Fucus inflatus var. linearis (Oeder) Rosenvinge, 1893 accepted as Fucus distichus Linnaeus, 1767
  » Species Fucus jubatus Goodenough & Woodward, 1797 accepted as Calliblepharis jubata (Goodenough & Woodward) Kützing, 1843 (unaccepted)
  » Species Fucus kaliformis Goodenough & Woodward, 1797 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928 (unaccepted)
  » Species Fucus labillardierei Mertens ex Turner, 1809 accepted as Phacelocarpus peperocarpos (Poiret) M.J.Wynne, Ardré & P.C.Silva, 1993 (unaccepted)
  » Species Fucus lacer Wulfen, 1803 accepted as (unaccepted, synonym)
  » Species Fucus laceratus S.G.Gmelin, 1768 accepted as Cryptopleura ramosa (Hudson) L.Newton, 1931 (unaccepted, synonym)
  » Species Fucus lacerifolius Turner, 1811 accepted as Sargassum lacerifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus lacerus Stackhouse, 1797 accepted as Chondrus crispus Stackhouse, 1797 (unaccepted, synonym)
  » Species Fucus lacerus Linnaeus, 1763 accepted as Chondrus crispus Stackhouse, 1797 (unaccepted)
  » Species Fucus lacerus J.V.Lamouroux, 1813 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted, synonym)
  » Species Fucus laciniatus Hudson, 1762 accepted as Metacallophyllis laciniata (Hudson) A.Vergés & L.Le Gall, 2017 (unaccepted)
  » Species Fucus lacinulatus M.Vahl, 1802 accepted as Gracilaria isabellana Gurgel, Fredericq & J.N.Norris, 2004 (unaccepted)
  » Species Fucus lambertii Turner, 1819 accepted as Callophyllis lambertii (Turner) Kützing, 1849 (unaccepted)
  » Species Fucus lamourouxii Turner, 1811 accepted as Caulerpa lamourouxii (Turner) C.Agardh, 1817 (unaccepted, synonym)
  » Species Fucus lanceolatus Withering, 1796 accepted as Calliblepharis jubata (Goodenough & Woodward) Kützing, 1843 (unaccepted)
  » Species Fucus langsdorfii Turner, 1811 accepted as Coccophora langsdorfii (Turner) Greville, 1830 (unaccepted)
  » Species Fucus lanosus Linnaeus, 1767 accepted as Vertebrata lanosa (Linnaeus) T.A.Christensen, 1967 (unaccepted, synonym)
  » Species Fucus larix Turner, 1819 accepted as Neorhodomela larix (Turner) Masuda, 1982 (unaccepted)
  » Species Fucus latifolius Turner, 1808 accepted as Sargassum latifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus latifolius Poiret, 1808 accepted as Sargassum ilicifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus laxus R.Brown ex Turner, 1811 accepted as Laurencia laxa (R.Brown ex Turner) Gaillon, 1828 (unaccepted)
  » Species Fucus lendigerus Linnaeus, 1753 accepted as Sargassum lendigerum (Linnaeus) C.Agardh, 1820 (unaccepted)
  » Species Fucus lichenastrum Poiret, 1817 accepted as Hydropuntia edulis (S.G.Gmelin) Gurgel & Fredericq, 2004 (unaccepted)
  » Species Fucus lichenoides Turner, 1808 accepted as Hydropuntia edulis (S.G.Gmelin) Gurgel & Fredericq, 2004 (unaccepted, synonym)
  » Species Fucus ligulatus Lightfoot, 1777 accepted as Desmarestia ligulata (Stackhouse) J.V.Lamouroux, 1813 (unaccepted, synonym)
  » Species Fucus limitaneus (Montagne) Montagne, 1856 accepted as Fucus guiryi Zardi, Nicastro, E.S.Serrão & G.A.Pearson, 2011 (unaccepted, synonym)
  » Species Fucus linariifolius Turner, 1807 accepted as Sargassum acinarium (Linnaeus) Setchell, 1933 (unaccepted)
  » Species Fucus linearifolius Turner, 1808 accepted as Sargassum linearifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus linearis Turner, 1815 accepted as Ahnfeltiopsis linearis (C.Agardh) P.C.Silva & DeCew, 1992 (unaccepted)
  » Species Fucus linearis Oeder, 1767 accepted as Fucus distichus Linnaeus, 1767 (unaccepted)
  » Species Fucus linearis Hudson, 1762 accepted as Fucus vesiculosus var. linearis (Hudson) Kützing, 1849 (unaccepted, synonym)
  » Species Fucus linearis Forsskål, 1775 accepted as Dictyota dichotoma var. intricata (C.Agardh) Greville, 1830 (unaccepted, synonym)
  » Species Fucus lineatus Turner, 1819 accepted as (unaccepted, synonym)
  » Species Fucus lingulatus Solander ex Woodward, 1794 accepted as Hypoglossum hypoglossoides (Stackhouse) Collins & Hervey, 1917 (unaccepted, synonym)
  » Species Fucus linifolius Turner, 1811 accepted as Sargassum acinarium (Linnaeus) Setchell, 1933 (unaccepted)
  » Species Fucus lividus Turner, 1819 accepted as Sarcothalia livida (Turner) Hommersand, 1993 (unaccepted)
  » Species Fucus lomation Bertoloni, 1818 accepted as Cryptonemia lomation (Bertoloni) J.Agardh, 1851 (unaccepted, synonym)
  » Species Fucus lomentarius (Lyngbye) Sommerfelt, 1826 accepted as Scytosiphon lomentaria (Lyngbye) Link, 1833 (unaccepted)
  » Species Fucus longifolius Turner, 1809 accepted as Anthophycus longifolius (Turner) Kützing, 1849 (unaccepted)
  » Species Fucus longissimus S.G.Gmelin, 1768 accepted as Gracilariopsis longissima (S.G.Gmelin) Steentoft, L.M.Irvine & Farnham, 1995 (unaccepted)
  » Species Fucus loreus Linnaeus, 1767 accepted as Himanthalia elongata (Linnaeus) S.F.Gray, 1821 (unaccepted)
  » Species Fucus lucidus R.Brown ex Turner, 1811 accepted as Pterocladia lucida (R.Brown ex Turner) J.Agardh, 1851 (unaccepted)
  » Species Fucus luetkeanus K.Mertens, 1829 accepted as Nereocystis luetkeana (K.Mertens) Postels & Ruprecht, 1840 (unaccepted)
  » Species Fucus lumbricalis Hudson, 1762 accepted as Furcellaria lumbricalis (Hudson) J.V.Lamouroux, 1813 (unaccepted, synonym)
  » Species Fucus lutarius (Chauvin ex J.Kickx f.) Kützing, 1860 accepted as Fucus spiralis var. lutarius (Kützing) Sauvageau, 1908 (unaccepted, synonym)
  » Species Fucus lycopodioides Linnaeus, 1767 accepted as Rhodomela lycopodioides (Linnaeus) C.Agardh, 1822 (unaccepted, synonym)
  » Species Fucus lycopodium Turner, 1811 accepted as Digenea simplex (Wulfen) C.Agardh, 1822 (unaccepted)
  » Species Fucus lycopodium Stackhouse, 1802 accepted as Rhodomela lycopodioides (Linnaeus) C.Agardh, 1822 (unaccepted, synonym)
  » Species Fucus mackayi Turner, 1808 accepted as Ascophyllum nodosum f. mackayi (Turner) A.C.Mathieson & Dawes, 2017 (unaccepted)
  » Species Fucus mammillosus Goodenough & Woodward, 1797 accepted as Mastocarpus stellatus (Stackhouse) Guiry, 1984 (unaccepted)
  » Species Fucus maschalocarpus Turner, 1819 accepted as Carpophyllum maschalocarpum (Turner) Greville, 1830 (unaccepted)
  » Species Fucus maxillosus Poiret, 1808 accepted as Plocamium maxillosum (Poiret) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus maximilianii Schrader, 1821 accepted as Sargassum maximilianii (Schrader) Martius, 1833 (unaccepted, synonym)
  » Species Fucus maximus Osbeck, 1757 accepted as Ecklonia maxima (Osbeck) Papenfuss, 1940 (unaccepted)
  » Species Fucus membranaceus Stackhouse, 1795 accepted as Dictyopteris polypodioides (A.P.De Candolle) J.V.Lamouroux, 1809 (unaccepted)
  » Species Fucus membranifolius Goodenough & Woodward, 1797 accepted as Phyllophora pseudoceranoïdes (S.G.Gmelin) Newroth & A.R.A.Taylor ex P.S.Dixon & L.M.Irvine, 1977 (unaccepted, synonym)
  » Species Fucus membranifolius C.Agardh, 1810 accepted as Phyllophora pseudoceranoïdes (S.G.Gmelin) Newroth & A.R.A.Taylor ex P.S.Dixon & L.M.Irvine, 1977 (unaccepted)
  » Species Fucus menziesii Turner, 1808 accepted as Egregia menziesii (Turner) Areschoug, 1876 (unaccepted)
  » Species Fucus miclonensis Bachelot de la Pylaie, 1830 accepted as Fucus distichus Linnaeus, 1767 (unaccepted)
  » Species Fucus microceratius Turner, 1809 accepted as Sargassum microceratium (Mertens ex Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus microphyllus De la Pylaie, 1829 accepted as Fucus evanescens C.Agardh, 1820 (unaccepted, synonym)
  » Species Fucus miniatus Draparnaud ex A.P.de Candolle, 1815 accepted as Wurdemannia miniata (Sprengel) Feldmann & Hamel, 1934 (unaccepted)
  » Species Fucus miniatus O.F.Müller, 1778 accepted as Metacallophyllis laciniata (Hudson) A.Vergés & L.Le Gall, 2017 (unaccepted)
  » Species Fucus minimus Hering, 1841 accepted as Chnoospora minima (Hering) Papenfuss, 1956 (unaccepted)
  » Species Fucus moniliformis Esper, 1804 accepted as Cystophora moniliformis (Esper) Womersley & Nizamuddin, 1964 (unaccepted)
  » Species Fucus moniliformis Labillardière, 1807 accepted as Hormosira banksii (Turner) Decaisne, 1842 (unaccepted)
  » Species Fucus mucronatus Turner accepted as Cystoseira nodicaulis (Withering) M.Roberts, 1967 (unaccepted)
  » Species Fucus multifidus Hudson, 1778 accepted as Osmundea osmunda (S.G.Gmelin) K.W.Nam & Maggs, 1994 (unaccepted)
  » Species Fucus multipartitus Clemente, 1807 accepted as Gracilaria multipartita (Clemente) Harvey, 1846 (unaccepted)
  » Species Fucus muricatus Turner, 1808 accepted as Cystoseira trinodis (Forsskål) C.Agardh, 1820 (unaccepted)
  » Species Fucus muricatus S.G.Gmelin, 1768 accepted as Eucheuma denticulatum (N.L.Burman) Collins & Hervey, 1917 (unaccepted)
  » Species Fucus musciformis Wulfen, 1791 accepted as Hypnea musciformis (Wulfen) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus muscoides (A.D.Cotton) Feldmann & Magne, 1964 accepted as Fucus cottonii M.J.Wynne & Magne, 1991 (unaccepted, synonym)
  » Species Fucus muscoides Linnaeus, 1753 accepted as Acanthophora muscoides (Linnaeus) Bory de Saint-Vincent, 1828 (unaccepted)
  » Species Fucus muscoides Hudson, 1762 accepted as Desmarestia aculeata (Linnaeus) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus muscoides Forsskål, 1775 accepted as Carradoriella elongata (Hudson) A.M.Savoie & G.W.Saunders, 2019 (unaccepted, synonym)
  » Species Fucus myagroides Mertens ex Turner, 1809 accepted as Myagropsis myagroides (Mertens ex Turner) Fensholt, 1955 (unaccepted)
  » Species Fucus myrica S.G.Gemlin, 1768 accepted as Polycladia myrica (S.G.Gmelin) Draima, Ballesteros, F.Rousseau & T.Thibaut, 2010 (unaccepted, synonym)
  » Species Fucus mytili Nienburg, 1932 accepted as Fucus vesiculosus f. mytili (Nienburg) Mathieson & Dawes, 2017 (unaccepted, synonym)
  » Species Fucus natans Linnaeus, 1753 accepted as Sargassum natans (Linnaeus) Gaillon, 1828 (unaccepted, synonym)
  » Species Fucus nayadiformis Delile, 1813 accepted as Acanthophora nayadiformis (Delile) Papenfuss, 1968 (unaccepted, synonym)
  » Species Fucus nemalion Bertoloni, 1818 accepted as Nemalion elminthoides (Velley) Batters, 1902 (unaccepted, synonym)
  » Species Fucus nervosus A.P.de Candolle, 1805 accepted as Phyllophora crispa (Hudson) P.S.Dixon, 1964 (unaccepted)
  » Species Fucus nitens N.L.Gardner, 1922 accepted as Fucus distichus Linnaeus, 1767 (unaccepted)
  » Species Fucus nodicaulis Withering, 1796 accepted as Cystoseira nodicaulis (Withering) M.Roberts, 1967 (unaccepted)
  » Species Fucus nodosus Linnaeus, 1753 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863 (unaccepted, synonym)
  » Species Fucus nodularius Mertens, 1819 accepted as Hormophysa cuneiformis (J.F.Gmelin) P.C.Silva, 1987 (unaccepted)
  » Species Fucus nootkanus Esper, 1802 accepted as Hypnea nidifica J.Agardh, 1852 (unaccepted)
  » Species Fucus norvegicus Gunnerus, 1772 accepted as Chondrus crispus Stackhouse, 1797 (unaccepted)
  » Species Fucus obtusatus Labillardière, 1807 accepted as Melanthalia obtusata (Labillardière) J.Agardh, 1852 (unaccepted)
  » Species Fucus obtusus Hudson, 1778 accepted as Laurencia obtusa (Hudson) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus ocellatus J.V.Lamouroux, 1802 accepted as Nitophyllum punctatum (Stackhouse) Greville, 1830 (unaccepted)
  » Species Fucus oederi Gunnerus, 1772 accepted as Osmundea oederi (Gunnerus) G.Furnari, 2008 (unaccepted)
  » Species Fucus oederi Esper, 1802 accepted as Gigartina pistillata (S.G.Gmelin) Stackhouse, 1809 (unaccepted, synonym)
  » Species Fucus onustus Mertens, 1819 accepted as Sirophysalis trinodis (Forsskal) Kützing, 1849 (unaccepted)
  » Species Fucus opuntia Goodenough & Woodward, 1797 accepted as Catenella caespitosa (Withering) L.M.Irvine, 1976 (unaccepted)
  » Species Fucus ornatus Linnaeus, 1771 accepted as Suhria vittata (Linnaeus) Endlicher, 1843 (unaccepted)
  » Species Fucus osmunda S.G.Gmelin, 1768 accepted as Osmundea osmunda (S.G.Gmelin) K.W.Nam & Maggs, 1994 (unaccepted)
  » Species Fucus osmundaceus Turner, 1809 accepted as Stephanocystis osmundacea (Turner) Trevisan, 1843 (unaccepted, synonym)
  » Species Fucus osmundus S.G.Gmelin, 1768 accepted as Osmundea osmunda (S.G.Gmelin) K.W.Nam & Maggs, 1994 (unaccepted)
  » Species Fucus ovalis Hudson, 1778 accepted as Gastroclonium ovatum (Hudson) Papenfuss, 1944 (unaccepted)
  » Species Fucus ovatus Hudson, 1762 accepted as Gastroclonium ovatum (Hudson) Papenfuss, 1944 (unaccepted)
  » Species Fucus ovinus Gunnerus, 1766 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted)
  » Species Fucus pallidus Turner, 1808 accepted as Sargassum pallidum (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus palmatus Linnaeus, 1753 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted, synonym)
  » Species Fucus palmetta Stackhouse, 1801 accepted as Rhodymenia pseudopalmata (J.V.Lamouroux) P.C.Silva, 1952 (unaccepted, synonym)
  » Species Fucus paniculatus Turner, 1811 accepted as Acrocarpia paniculata (Turner) Areschoug, 1854 (unaccepted)
  » Species Fucus papillosus Forsskål, 1775 accepted as Palisada perforata (Bory) K.W.Nam, 2007 (unaccepted)
  » Species Fucus paradoxus R.Brown ex Turner, 1811 accepted as Sargassum paradoxum (R.Brown ex Turner) Gaillon, 1828 (unaccepted)
  » Species Fucus parvifolius Turner, 1811 accepted as Sargassum parvifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus patens C.Agardh, 1815 accepted as Sargassum patens C.Agardh, 1820 (unaccepted)
  » Species Fucus patens Goodenough & Woodward, 1797 accepted as Chondrus crispus Stackhouse, 1797 (unaccepted)
  » Species Fucus pavonicus Linnaeus, 1753 accepted as Padina pavonica (Linnaeus) Thivy, 1960 (unaccepted, synonym)
  » Species Fucus pavonius Linnaeus, 1759 accepted as Padina pavonica (Linnaeus) Thivy, 1960 (unaccepted)
  » Species Fucus pectinatus Gunnerus, 1772 accepted as Ptilota serrata Kützing, 1847 (unaccepted)
  » Species Fucus pedunculatus Hudson, 1778 accepted as Sporochnus pedunculatus (Hudson) C.Agardh, 1817 (unaccepted)
  » Species Fucus peniculus R.Brown ex Turner, 1819 accepted as Acetabularia peniculus (R.Brown ex Turner) Solms-Laubach, 1895 (unaccepted)
  » Species Fucus peperocarpos Poiret, 1808 accepted as Phacelocarpus peperocarpos (Poiret) M.J.Wynne, Ardré & P.C.Silva, 1993 (unaccepted)
  » Species Fucus perforatus Bory de Saint-Vincent, 1803 accepted as Palisada perforata (Bory) K.W.Nam, 2007 (unaccepted, synonym)
  » Species Fucus peronii Mertens, 1819 accepted as Sargassum peronii C.Agardh, 1820 (unaccepted)
  » Species Fucus pertusus K.H.Mertens, 1829 accepted as Agarum pertusum (K.H.Mertens) Postels & Ruprecht, 1840 (unaccepted, synonym)
  » Species Fucus phenax Sprengel, 1809 accepted as Rytiphlaea tinctoria (Clemente) C.Agardh, 1824 (unaccepted, synonym)
  » Species Fucus phyllanthus Turner, 1819 accepted as Carpophyllum flexuosum (Esper) Greville, 1830 (unaccepted, synonym)
  » Species Fucus phyllitis Stackhouse, 1796 accepted as Saccharina latissima (Linnaeus) C.E.Lane, C.Mayes, Druehl & G.W.Saunders, 2006 (unaccepted)
  » Species Fucus pilularia S.G.Gmelin, 1768 accepted as Bonnemaisonia pilularia (S.G.Gmelin) C.Agardh, 1822 (unaccepted, synonym)
  » Species Fucus pilulifer Turner, 1808 accepted as Sargassum piluliferum (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus pinastroides S.G.Gmelin, 1768 accepted as Halopithys incurva (Hudson) Batters, 1902 (unaccepted, synonym)
  » Species Fucus pinnatifidus Hudson, 1762 accepted as Osmundea pinnatifida (Hudson) Stackhouse, 1809 (unaccepted, synonym)
  » Species Fucus pinnatifidus Strøm, 1788 accepted as Osmundea ramosissima Athanasiadis, 1996 (unaccepted)
  » Species Fucus pinnatifidus Hornemann, 1813 accepted as Osmundea ramosissima Athanasiadis, 1996 (unaccepted)
  » Species Fucus pinnatifidus Oeder, 1767 accepted as Odonthalia dentata (Linnaeus) Lyngbye, 1819 (unaccepted)
  » Species Fucus pinnatifolius C.Agardh, 1815 accepted as Sargassum piluliferum (Turner) C.Agardh, 1820 (unaccepted, synonym)
  » Species Fucus pinnatus Linnaeus f., 1782 accepted as Caulerpa pinnata C.Agardh, 1817 (unaccepted)
  » Species Fucus pinnatus Gunnerus, 1766 accepted as Alaria esculenta (Linnaeus) Greville, 1830 (unaccepted)
  » Species Fucus pinnatus Hudson, 1762 accepted as Pterocladiella capillacea (S.G.Gmelin) Santelices & Hommersand, 1997 (unaccepted)
  » Species Fucus pistillatus S.G.Gmelin, 1768 accepted as Gigartina pistillata (S.G.Gmelin) Stackhouse, 1809 (unaccepted)
  » Species Fucus platycarpus Turner, 1809 accepted as Botryoglossum platycarpum (Turner) Kützing, 1843 (unaccepted)
  » Species Fucus platycarpus Thuret, 1851 accepted as Fucus guiryi Zardi, Nicastro, E.S.Serrão & G.A.Pearson, 2011 (unaccepted, illegitimate name (later homonym))
  » Species Fucus platylobium Mertens, 1819 accepted as Cystophora platylobium (Mertens) J.Agardh, 1848 (unaccepted)
  » Species Fucus plicatus Hudson, 1762 accepted as Ahnfeltia plicata (Hudson) Fries, 1836 (unaccepted, synonym)
  » Species Fucus plicatus Esper, 1798 accepted as Ahnfeltia plicata (Hudson) Fries, 1836 (unaccepted)
  » Species Fucus plocamium S.G.Gmelin, 1768 accepted as Plocamium cartilagineum (Linnaeus) P.S.Dixon, 1967 (unaccepted)
  » Species Fucus plumaris Forsskål, 1775 accepted as Caulerpa sertularioides (S.G.Gmelin) M.Howe, 1905 (unaccepted)
  » Species Fucus plumosus Hudson, 1762 accepted as Plumaria plumosa (Hudson) Kuntze, 1891 (unaccepted)
  » Species Fucus plumosus Linnaeus, 1767 accepted as Ptilota gunneri P.C.Silva, Maggs & L.M.Irvine, 1993 (unaccepted)
  » Species Fucus poiteaui J.V.Lamouroux, 1805 accepted as Yuzurua poiteaui (J.V.Lamouroux) Martin-Lescanne, 2010 (unaccepted)
  » Species Fucus polypodioides Desfontaines, 1799 accepted as Dictyopteris polypodioides (A.P.De Candolle) J.V.Lamouroux, 1809 (unaccepted)
  » Species Fucus polypodioides S.G.Gmelin, 1768 accepted as Gastroclonium ovatum (Hudson) Papenfuss, 1944 (unaccepted)
  » Species Fucus polyschides Lightfoot, 1777 accepted as Saccorhiza polyschides (Lightfoot) Batters, 1902 (unaccepted)
  » Species Fucus potatorum Labillardière, 1807 accepted as Durvillaea potatorum (Labillardière) Areschoug, 1854 (unaccepted)
  » Species Fucus pristoides Turner, 1807 accepted as Gelidium pristoides (Turner) Kützing, 1843 (unaccepted)
  » Species Fucus procerrimus Esper, 1800 accepted as Gracilaria gracilis (Stackhouse) Steentoft, L.M.Irvine & Farnham, 1995 (unaccepted)
  » Species Fucus prolifer M.Blanco, 1837 accepted as Halimeda opuntia (Linnaeus) J.V.Lamouroux, 1816 (unaccepted)
  » Species Fucus prolifer Lightfoot, 1777 accepted as Phyllophora crispa (Hudson) P.S.Dixon, 1964 (unaccepted, synonym)
  » Species Fucus prolifer Forsskål, 1775 accepted as Caulerpa prolifera (Forsskål) J.V.Lamouroux, 1809 (unaccepted)
  » Species Fucus pruniformis Gunnerus, 1772 accepted as Himanthalia elongata (Linnaeus) S.F.Gray, 1821 (unaccepted)
  » Species Fucus pseudoceranoïdes S.G.Gmelin, 1768 accepted as Phyllophora pseudoceranoïdes (S.G.Gmelin) Newroth & A.R.A.Taylor ex P.S.Dixon & L.M.Irvine, 1977 (unaccepted)
  » Species Fucus pseudociliatus J.V.Lamouroux accepted as Taonia pseudociliata (J.V.Lamouroux) Nizamuddin & Godeh, 1993 (unaccepted)
  » Species Fucus pseudocrispus Clemente, 1807 accepted as Scinaia furcellata (Turner) J.Agardh, 1851 (unaccepted)
  » Species Fucus pseudopalmatus J.V.Lamouroux, 1805 accepted as Rhodymenia pseudopalmata (J.V.Lamouroux) P.C.Silva, 1952 (unaccepted)
  » Species Fucus ptilotus Gunnerus, 1772 accepted as Ptilota gunneri P.C.Silva, Maggs & L.M.Irvine, 1993 (unaccepted)
  » Species Fucus pumilus Vahl, 1792 accepted as Fimbrifolium dichotomum (Lepechin) G.I.Hansen, 1980 (unaccepted)
  » Species Fucus punctatus Stackhouse, 1796 accepted as Nitophyllum punctatum (Stackhouse) Greville, 1830 (unaccepted)
  » Species Fucus purpurascens Hudson, 1778 accepted as Cystoclonium purpureum (Hudson) Batters, 1902 (unaccepted, synonym)
  » Species Fucus purpureus Hudson, 1762 accepted as Cystoclonium purpureum (Hudson) Batters, 1902 (unaccepted)
  » Species Fucus purpureus Turner, 1807-1808 accepted as Rytiphlaea tinctoria (Clemente) C.Agardh, 1824 (unaccepted, synonym)
  » Species Fucus pusillus Stackhouse, 1795 accepted as Gelidium pusillum (Stackhouse) Le Jolis, 1863 (unaccepted)
  » Species Fucus pygmaeus Lightfoot, 1777 accepted as Lichina pygmaea (Lightf.) C. Agardh, 1817 (unaccepted)
  » Species Fucus pyrifer Linnaeus, 1771 accepted as Macrocystis pyrifera (Linnaeus) C.Agardh, 1820 (unaccepted)
  » Species Fucus quercifolius R.Brown ex Turner, 1809 accepted as Platythalia quercifolia (R.Brown ex Turner) Sonder, 1848 (unaccepted)
  » Species Fucus racemosus Forsskål, 1775 accepted as Caulerpa racemosa (Forsskål) J.Agardh, 1873 (unaccepted)
  » Species Fucus radiatus Goodenough & Woodward, 1797 accepted as Polyides rotunda (Hudson) Gaillon, 1828 (unaccepted)
  » Species Fucus radiatus Turner, 1808 accepted as Ecklonia radiata (C.Agardh) J.Agardh, 1848 (unaccepted)
  » Species Fucus radiciformis R.Brown ex Turner, 1809 accepted as Sporochnus radiciformis (R.Brown ex Turner) C.Agardh, 1817 (unaccepted)
  » Species Fucus radula Esper, 1802 accepted as Sarcothalia radula (Esper) Edyvane & Womersley, 1994 (unaccepted)
  » Species Fucus ramentaceus Linnaeus, 1767 accepted as Devaleraea ramentacea (Linnaeus) Guiry, 1982 (unaccepted)
  » Species Fucus ramosissimus Oeder, 1766 accepted as Osmundea oederi (Gunnerus) G.Furnari, 2008 (unaccepted, synonym)
  » Species Fucus rangiferina R.Brown ex Turner, 1811 accepted as Callophyllis rangiferina (R.Brown ex Turner) Womersley, 1973 (unaccepted)
  » Species Fucus reniformis Turner, 1809 accepted as Kallymenia reniformis (Turner) J.Agardh, 1842 (unaccepted)
  » Species Fucus repens Lightfoot, 1777 accepted as Catenella caespitosa (Withering) L.M.Irvine, 1976 (unaccepted, synonym)
  » Species Fucus retortus Mertens, 1819 accepted as Cystophora retorta (Mertens) J.Agardh, 1848 (unaccepted)
  » Species Fucus retroflexus Labillardière, 1807 accepted as Cystophora retroflexa (Labillardière) J.Agardh, 1848 (unaccepted)
  » Species Fucus rhizodes Ehrhart ex Turner, 1819 accepted as Stilophora tenella (Esper) P.C.Silva, 1996 (unaccepted)
  » Species Fucus rigidus Vahl, 1802 accepted as Gelidiella acerosa (Forsskål) Feldmann & Hamel, 1934 (unaccepted)
  » Species Fucus rosa-marina S.G.Gmelin, 1768 accepted as Constantinea rosa-marina (S.G.Gmelin) Postels & Ruprecht, 1840 (unaccepted)
  » Species Fucus roseus O.F.Müller, 1775 accepted as Phycodrys rubens (Linnaeus) Batters, 1902 (unaccepted)
  » Species Fucus rotundatus Hudson, 1762 accepted as Bifurcaria bifurcata R.Ross, 1958 (unaccepted)
  » Species Fucus rotundifolius Draparnaud, 1815 accepted as Kallymenia reniformis (Turner) J.Agardh, 1842 (unaccepted, synonym)
  » Species Fucus rotundus Hudson, 1762 accepted as Polyides rotunda (Hudson) Gaillon, 1828 (unaccepted)
  » Species Fucus rubens Linnaeus, 1753 accepted as Phycodrys rubens (Linnaeus) Batters, 1902 (unaccepted, synonym)
  » Species Fucus rubens Esper, 1799 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted)
  » Species Fucus rubescens Sommerfelt, 1826 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted)
  » Species Fucus ruscifolius Turner, 1802 accepted as Apoglossum ruscifolium (Turner) J.Agardh, 1898 (unaccepted, synonym)
  » Species Fucus saccatus Lepechin, 1775 accepted as Halosaccion saccatum (Lepechin) Kützing, 1866 (unaccepted)
  » Species Fucus saccharinus Linnaeus, 1753 accepted as Saccharina latissima (Linnaeus) C.E.Lane, C.Mayes, Druehl & G.W.Saunders, 2006 (unaccepted)
  » Species Fucus salicifolius S.G.Gmelin, 1768 accepted as Sargassum vulgare C.Agardh, 1820 (unaccepted)
  » Species Fucus saltii Turner, 1819 accepted as Sargassum saltii (Turner) C.Agardh, 1824 (unaccepted)
  » Species Fucus sanguineus Hudson, 1762 accepted as Delesseria sanguinea (Hudson) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus sargasso S.G.Gmelin, 1768 accepted as Sargassum natans (Linnaeus) Gaillon, 1828 (unaccepted)
  » Species Fucus sarniensis Mertens in Roth, 1806 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted)
  » Species Fucus scalpelliformis R.Brown ex Turner, 1809 accepted as Caulerpa scalpelliformis (R.Brown ex Turner) C.Agardh, 1817 (unaccepted)
  » Species Fucus scoparius Mertens ex Turner, 1809 accepted as Sargassum siliquastrum (Mertens ex Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus scoparius Strøm, 1762 accepted as Laminaria hyperborea (Gunnerus) Foslie, 1884 (unaccepted, synonym)
  » Species Fucus scorpioides Hudson, 1762 accepted as Bostrychia scorpioides (Hudson) Montagne, 1842 (unaccepted)
  » Species Fucus scorpioides O.F.Müller, 1782 accepted as Cystoclonium purpureum (Hudson) Batters, 1902 (unaccepted)
  » Species Fucus scorpioides Hornemann, 1813 accepted as Ascophyllum nodosum f. scorpioides Hauck, 1883 (unaccepted)
  » Species Fucus seaforthii Turner, 1808 accepted as Alsidium seaforthii (Turner) J.Agardh, 1841 (unaccepted)
  » Species Fucus sedoides Desfontaines, 1799 accepted as Cystoseira sedoides (Desfontaines) C.Agardh, 1820 (unaccepted)
  » Species Fucus sedoides R.Brown ex Turner, 1809 accepted as Caulerpa sedoides C.Agardh, 1817 (unaccepted)
  » Species Fucus selaginoides Linnaeus, 1759 accepted as Cystoseira tamariscifolia (Hudson) Papenfuss, 1950 (unaccepted)
  » Species Fucus selago Turner, 1808 accepted as Caulerpa selago (Turner) C.Agardh, 1817 (unaccepted)
  » Species Fucus sericeus S.G.Gmelin, 1768 accepted as Plumaria sericea (S.G.Gmelin) Ruprecht, 1850 (unaccepted)
  » Species Fucus serra S.G.Gmelin, 1768 accepted as Gelidium bipectinatum G.Furnari, 1999 (unaccepted)
  » Species Fucus serratifolius C.Agardh, 1815 accepted as Sargassum serratifolium (C.Agardh) C.Agardh, 1820 (unaccepted)
  » Species Fucus serratifolius Thunberg, 1815 accepted as Sargassum siliquastrum (Mertens ex Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus serrulatus Forsskål, 1775 accepted as Caulerpa serrulata (Forsskål) J.Agardh, 1837 (unaccepted)
  » Species Fucus sertolara Bertoloni, 1819 accepted as Halimeda sertolara (Bertoloni) Zanardini, 1840 (unaccepted, synonym)
  » Species Fucus sertularioides S.G.Gmelin, 1768 accepted as Caulerpa sertularioides (S.G.Gmelin) M.Howe, 1905 (unaccepted)
  » Species Fucus siliculosus Stackhouse, 1796 accepted as Halidrys siliquosa (Linnaeus) Lyngbye, 1819 (unaccepted)
  » Species Fucus siliquastrus Mertens ex Turner, 1809 accepted as Sargassum siliquastrum (Mertens ex Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus siliquosus Linnaeus, 1753 accepted as Halidrys siliquosa (Linnaeus) Lyngbye, 1819 (unaccepted)
  » Species Fucus simpliciuscula R.Brown ex Turner, 1809 accepted as Caulerpa simpliciuscula (R.Brown ex Turner) C.Agardh, 1823 (unaccepted)
  » Species Fucus sinuosus Goodenough & Woodward, 1797 accepted as Phycodrys rubens (Linnaeus) Batters, 1902 (unaccepted)
  » Species Fucus sisymbryoides Turner, 1809 accepted as Myagropsis myagroides (Mertens ex Turner) Fensholt, 1955 (unaccepted)
  » Species Fucus soboliferus M.Vahl, 1792 accepted as Palmaria palmata (Linnaeus) F.Weber & D.Mohr, 1805 (unaccepted)
  » Species Fucus spartioides Turner, 1819 accepted as Cystophora moniliformis (Esper) Womersley & Nizamuddin, 1964 (unaccepted)
  » Species Fucus spiciferus M.Vahl, 1802 accepted as Acanthophora spicifera (M.Vahl) Børgesen, 1910 (unaccepted)
  » Species Fucus spiniformis J.V.Lamouroux, 1805 accepted as Gelidiella acerosa (Forsskål) Feldmann & Hamel, 1934 (unaccepted)
  » Species Fucus spinosus Linnaeus, 1771 accepted as Eucheuma denticulatum (N.L.Burman) Collins & Hervey, 1917 (unaccepted)
  » Species Fucus spinosus S.G.Gmelin, 1768 accepted as Gelidium spinosum (S.G.Gmelin) P.C.Silva, 1996 (unaccepted)
  » Species Fucus squamarius S.G.Gmelin, 1768 accepted as Peyssonnelia squamaria (S.G.Gmelin) Decaisne ex J.Agardh, 1842 (unaccepted)
  » Species Fucus stackhousei Clemente, 1807 accepted as Helminthocladia stackhousei (Clemente) J.Cremades, 1993 (unaccepted)
  » Species Fucus stellatus Stackhouse, 1796 accepted as Mastocarpus stellatus (Stackhouse) Guiry, 1984 (unaccepted)
  » Species Fucus stiriata Turner, 1807 accepted as Sarcothalia stiriata (Turner) Leister, 1993 (unaccepted)
  » Species Fucus stiriatus Turner, 1808 accepted as Sarcothalia stiriata (Turner) Leister, 1993 (unaccepted)
  » Species Fucus striatus Draparnaud, 1824 accepted as Rytiphlaea tinctoria (Clemente) C.Agardh, 1824 (unaccepted, synonym)
  » Species Fucus subfarcinatus Mertens, 1819 accepted as Cystophora subfarcinata (Mertens) J.Agardh, 1848 (unaccepted)
  » Species Fucus subfuscus Woodward, 1791 accepted as Rhodomela confervoides (Hudson) P.C.Silva, 1952 (unaccepted)
  » Species Fucus subrepandus Forsskål, 1775 accepted as Sargassum subrepandum (Forsskål) C.Agardh, 1820 (unaccepted)
  » Species Fucus swartzii C.Agardh, 1815 accepted as Sargassum thunbergii (Mertens ex Roth) Kuntze, 1880 (unaccepted)
  » Species Fucus swartzii Turner, 1811 accepted as Sargassum swartzii C.Agardh, 1820 (unaccepted)
  » Species Fucus tamariscifolius Hudson, 1762 accepted as Cystoseira tamariscifolia (Hudson) Papenfuss, 1950 (unaccepted)
  » Species Fucus taxifolius M.Vahl, 1802 accepted as Caulerpa taxifolia (M.Vahl) C.Agardh, 1817 (unaccepted)
  » Species Fucus taxiformis Delile, 1813 accepted as Asparagopsis taxiformis (Delile) Trevisan de Saint-Léon, 1845 (unaccepted)
  » Species Fucus telephifolius Turner, 1808 accepted as Sargassum telephifolium (Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus tenax Turner, 1806 accepted as Gloiopeltis tenax (Turner) Decaisne, 1842 (unaccepted)
  » Species Fucus tenellus Esper, 1800 accepted as Stilophora tenella (Esper) P.C.Silva, 1996 (unaccepted)
  » Species Fucus tenellus M.Vahl, 1802 accepted as Bostrychia tenella (J.V.Lamouroux) J.Agardh, 1863 (unaccepted)
  » Species Fucus tenerrimus Esper, 1800 accepted as Lomentaria tenerrima (Esper) P.C.Silva, 1996 (unaccepted)
  » Species Fucus tenerrimus Clemente, 1807 accepted as Palisada tenerrima (Cremades) D.Serio, M.Cormaci, G.Furnari & F.Boisset, 2010 (unaccepted)
  » Species Fucus tentaculatus Bertoloni, 1818 accepted as Gymnogongrus griffithsiae (Turner) C.Martius, 1833 (unaccepted, synonym)
  » Species Fucus tenuissimus Withering, 1796 accepted as Chondria capillaris (Hudson) M.J.Wynne, 1991 (unaccepted)
  » Species Fucus teres Goodenough & Woodward, 1797 accepted as Alaria esculenta (Linnaeus) Greville, 1830 (unaccepted)
  » Species Fucus tetragonus Delile, 1813 accepted as Sargassum dentifolium (Turner) C.Agardh, 1820 (unaccepted, synonym)
  » Species Fucus textilis Clemente, 1807 accepted as Codium textile (Clemente) C.Agardh, 1817 (unaccepted)
  » Species Fucus thunbergii Mertens ex Roth, 1800 accepted as Sargassum thunbergii (Mertens ex Roth) Kuntze, 1880 (unaccepted, synonym)
  » Species Fucus thyrsoides Turner, 1808 accepted as Laurencia thyrsoides (Turner) Gaillon, 1828 (unaccepted)
  » Species Fucus tilesii C.Agardh, 1812 accepted as Coccophora langsdorfii (Turner) Greville, 1830 (unaccepted)
  » Species Fucus tinctorius Clemente, 1807 accepted as Rytiphlaea tinctoria (Clemente) C.Agardh, 1824 (unaccepted)
  » Species Fucus tomentosus Hudson, 1778 accepted as Codium tomentosum Stackhouse, 1797 (unaccepted)
    » Variety Fucus tomentosus var. elongatus Turner, 1809 accepted as Codium decorticatum (Woodward) M.A.Howe, 1911
    » Variety Fucus tomentosus var. marginifer Turner, 1811 accepted as Codium tomentosum Stackhouse, 1797
    » Variety Fucus tomentosus var. subpalmatus Turner, 1809 (uncertain, uncertain taxonomic status subjected to verification)
  » Species Fucus tortilis C.Agardh, 1812 accepted as Sargassum siliquastrum (Mertens ex Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus torulosus R.Brown ex Turner, 1811 accepted as Cystophora torulosa (R.Brown ex Turner) J.Agardh, 1848 (unaccepted)
  » Species Fucus tournefortii J.V.Lamouroux, 1805 accepted as Zonaria tournefortii (J.V.Lamouroux) Montagne, 1846 (unaccepted)
  » Species Fucus triangularis J.F.Gmelin, 1792 accepted as Alsidium triquetrum (S.G.Gmelin) Trevisan, 1845 (unaccepted)
  » Species Fucus tridens Mertens ex Turner, 1811 accepted as Dictyomenia tridens (Mertens ex Turner) Greville, 1830 (unaccepted)
  » Species Fucus trigonus Clemente, 1807 accepted as Scinaia furcellata (Turner) J.Agardh, 1851 (unaccepted)
  » Species Fucus trinodis Forsskål, 1775 accepted as Sirophysalis trinodis (Forsskal) Kützing, 1849 (unaccepted, synonym)
  » Species Fucus triqueter Linnaeus, 1771 accepted as Hormophysa cuneiformis (J.F.Gmelin) P.C.Silva, 1987 (unaccepted)
  » Species Fucus triqueter S.G.Gmelin, 1768 accepted as Alsidium triquetrum (S.G.Gmelin) Trevisan, 1845 (unaccepted)
  » Species Fucus truncatus Pallas, 1776 accepted as Coccotylus truncatus (Pallas) M.J.Wynne & J.N.Heine, 1992 (unaccepted)
  » Species Fucus tuberculatus Hudson, 1778 accepted as Bifurcaria bifurcata R.Ross, 1958 (unaccepted)
  » Species Fucus tuberculatus Solander, 1777 accepted as Cystoclonium purpureum (Hudson) Batters, 1902 (unaccepted, synonym)
  » Species Fucus tubulosus Lepechin, 1775 accepted as Devaleraea ramentacea (Linnaeus) Guiry, 1982 (unaccepted)
  » Species Fucus tuniformis Bertoloni, 1819 accepted as Cryptonemia tuniformis (Bertoloni) Zanardini, 1868 (unaccepted)
  » Species Fucus turbinatus Linnaeus, 1753 accepted as Turbinaria turbinata (Linnaeus) Kuntze, 1898 (unaccepted)
  » Species Fucus usnea R.Brown ex Turner, 1811 accepted as Hymenocladia usnea (R.Brown ex Turner) J.Agardh, 1852 (unaccepted)
  » Species Fucus usneoides Linnaeus, 1759 accepted as Cystoseira usneoides (Linnaeus) M.Roberts, 1968 (unaccepted)
  » Species Fucus uvarius J.A.Murray, 1774 accepted as Botryocladia botryoides (Wulfen) Feldmann, 1941 (unaccepted, synonym)
  » Species Fucus uvifer Turner, 1811 accepted as Caulerpa racemosa (Forsskål) J.Agardh, 1873 (unaccepted)
  » Species Fucus uvifer Forsskål, 1775 accepted as Laurencia uvifera (Forsskål) Børgesen, 1932 (unaccepted)
  » Species Fucus valentiae Turner, 1809 accepted as Hypnea valentiae (Turner) Montagne, 1841 (unaccepted)
  » Species Fucus variabilis Goodenough & Woodward, 1797 accepted as Rhodomela confervoides (Hudson) P.C.Silva, 1952 (unaccepted)
  » Species Fucus venosus Linnaeus, 1771 accepted as Hymenena venosa (Linnaeus) C.Krauss, 1846 (unaccepted)
  » Species Fucus vermicularis Turner, 1815 accepted as Ahnfeltiopsis vermicularis (C.Agardh) P.C.Silva & DeCew, 1992 (unaccepted)
  » Species Fucus vermicularis (Scopoli) Bertoloni, 1819 accepted as Dasycladus vermicularis (Scopoli) Krasser, 1898 (unaccepted)
  » Species Fucus verrucosus Hudson, 1762 accepted as Gracilariopsis longissima (S.G.Gmelin) Steentoft, L.M.Irvine & Farnham, 1995 (unaccepted, synonym)
  » Species Fucus verruculosus Bertoloni, 1818 accepted as Rissoella verruculosa (Bertoloni) J.Agardh, 1851 (unaccepted)
  » Species Fucus verruculosus Mertens, 1819 accepted as Phyllotricha verruculosa (C.Agardh) R.R.M.Dixon & Huisman, 2012 (unaccepted)
  » Species Fucus versicolor S.G.Gmelin, 1768 accepted as Gelidium versicolor (S.G.Gmelin) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus verticillatus Lightfoot, 1777 accepted as Chylocladia verticillata (Lightfoot) Bliding, 1928 (unaccepted)
  » Species Fucus vestitus R.Brown ex Turner, 1811 accepted as Sargassum vestitum (R.Brown ex Turner) C.Agardh, 1820 (unaccepted)
  » Species Fucus virgatus Mertens, 1819 accepted as Sargassum virgatum C.Agardh, 1820 (unaccepted)
  » Species Fucus virgatus Gunnerus, 1766 accepted as Desmarestia aculeata (Linnaeus) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus viridis O.F.Müller, 1782 accepted as Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813 (unaccepted)
  » Species Fucus viscidus Forsskål, 1775 accepted as Liagora viscida (Forsskål) C.Agardh, 1822 (unaccepted)
  » Species Fucus vitifolius Bonpland, 1809 accepted as Caulerpa vitifolia (Bonpland) J.V.Lamouroux (unaccepted, synonym)
  » Species Fucus vittatus Linnaeus, 1767 accepted as Gelidium vittatum (Linnaeus) Kützing, 1843 (unaccepted)
  » Species Fucus volubilis Linnaeus, 1759 accepted as Osmundaria volubilis (Linnaeus) R.E.Norris, 1991 (unaccepted, synonym)
  » Species Fucus wiggii Turner, 1802 accepted as Naccaria wiggii (Turner) Endlicher ex J.Agardh, 1842 (unaccepted)
  » Species Fucus woodwardia R.Brown ex Turner, 1811 accepted as Dictyopteris woodwardia (R.Brown ex Turner) C.Agardh, 1817 (unaccepted)
  » Species Fucus wrightii Harvey, 1860 accepted as Silvetia babingtonii (Harvey) E.A.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999 (unaccepted)
  » Species Fucus wrightii Turner, 1811 accepted as Gracilaria wrightii (Turner) J.Agardh, 1852 (unaccepted, synonym)
  » Species Fucus zonalis J.V.Lamouroux, 1805 accepted as Stypopodium zonale (J.V.Lamouroux) Papenfuss, 1940 (unaccepted)
  » Species Fucus zosteroides Turner, 1819 accepted as Cystoseira zosteroides (Turner) C.Agardh, 1821 (unaccepted)
  » Species Fucus zosteroides J.V.Lamouroux, 1805 accepted as Dictyota dichotoma (Hudson) J.V.Lamouroux, 1809 (unaccepted, synonym)
  » Species Fucus acutus 'Turner'
  » Species Fucus albus Esper, 1798
  » Species Fucus allantoides Brown ex Turner, 1819
  » Species Fucus angulatus S.G.Gmelin, 1768
  » Species Fucus angulatus Roussel, 1806
  » Species Fucus articulatus S.G.Gmelin, 1768
  » Species Fucus atomarius S.G.Gmelin, 1768
  » Species Fucus barbulatus Poiret
  » Species Fucus bastera S.G.Gmelin, 1768
  » Species Fucus bicornis Gmelin
  » Species Fucus bicornis De la Pylaie
    » Variety Fucus bicornis var. anomalus De la Pylaie (uncertain)
  » Species Fucus bipinnatus Desfontaines, 1799
  » Species Fucus brevifolius Poiret
  » Species Fucus buxbaumii C.Agardh
  » Species Fucus callopilophorus Forsskål, 1775
  » Species Fucus capensis Areschoug, 1860
  » Species Fucus cartilagineus Gunnerus, 1772
  » Species Fucus caulescens Gmelin
  » Species Fucus cirrhifolius West
  » Species Fucus clavatus C.Agardh, 1822
  » Species Fucus coarctatus Schousboe
  » Species Fucus conoides Forssk.
  » Species Fucus deformis Esper, 1800
  » Species Fucus denudatus 'Turner'
  » Species Fucus diaphanus Raffeneau Delile
  » Species Fucus dichotomus Sauvageau, 1915
  » Species Fucus diffusus Hudson, 1778
  » Species Fucus disciplinalis Bory de Saint-Vincent
  » Species Fucus divaricatus Gunnerus, 1772
  » Species Fucus emarginatus Vahl
  » Species Fucus felinus Raffeneau Delile
  » Species Fucus fibrilla Esper, 1804
  » Species Fucus filicinus Hudson, 1762
  » Species Fucus fimbriatus S.G.Gmelin, 1768
  » Species Fucus flaccidus J.V.Lamouroux, 1802
  » Species Fucus flagellaris Esper, 1800
  » Species Fucus flexilis Wulfen, 1803
  » Species Fucus forsskaolii Mertens
  » Species Fucus friabilis Clemente, 1807 (synonym)
  » Species Fucus fulvescens Esper, 1802
  » Species Fucus furcatus Stackhouse, 1802
    » Forma Fucus furcatus f. abbreviatus N.L.Gardner, 1922 accepted as Fucus distichus Linnaeus, 1767
    » Forma Fucus furcatus f. angustus Unknown authority accepted as Fucus distichus Linnaeus, 1767
    » Forma Fucus furcatus f. elongatus Unknown authority accepted as Fucus distichus Linnaeus, 1767
    » Forma Fucus furcatus f. luxurians Unknown authority accepted as Fucus distichus Linnaeus, 1767
    » Forma Fucus furcatus f. typicus N.L.Gardner, 1922 accepted as Fucus distichus Linnaeus, 1767
    » Forma Fucus furcatus f. contortus Gardner (uncertain)
    » Forma Fucus furcatus f. cornutus Gardner (uncertain)
    » Forma Fucus furcatus f. latifrons Gardner (uncertain)
    » Forma Fucus furcatus f. linearis Gardner (uncertain)
    » Forma Fucus furcatus f. nigricans Gardner (uncertain)
    » Forma Fucus furcatus f. reflexus Gardner (uncertain)
    » Forma Fucus furcatus f. rigidus Gardner (uncertain)
    » Forma Fucus furcatus f. variabilis Gardner (uncertain)
  » Species Fucus geniculatus S.G.Gmelin, 1768
  » Species Fucus globulifer Turner, 1819 (uncertain taxonomic status subjected to verification)
  » Species Fucus gramineus A.P.de Candolle, 1807
  » Species Fucus hirtus Bonpland, 1809
  » Species Fucus humboldtii Bonpland, 1809
  » Species Fucus humilis Schousboe
  » Species Fucus hypnoides Wulfen, 1787 (uncertain taxonomic status subjected to verification)
  » Species Fucus imbricatus Schousboe
  » Species Fucus intermedius van Goor, 1923
  » Species Fucus lagascae Clemente, 1807
  » Species Fucus lichenoides S.G.Gmelin, 1768
  » Species Fucus lichenoides Goodenough & Woodward, 1797
  » Species Fucus ligulatus S.G.Gmelin, 1768
  » Species Fucus lobatus Schousboe
  » Species Fucus lubricus Schousboe
  » Species Fucus mamillaris Esper, 1802
  » Species Fucus marginalis Schousboe
  » Species Fucus marginalis Wulfen, 1791 (uncertain taxonomic status subjected to verification)
  » Species Fucus membranaceus N.L.Burman, 1768
  » Species Fucus membranifolius Withering, 1796
  » Species Fucus mesembrianthemi Schousboe
  » Species Fucus nereideus Lightfoot, 1777
  » Species Fucus ovifrons Weber & D.Mohr, 1805
  » Species Fucus palmetta S.G.Gmelin, 1768
  » Species Fucus papillosus S.G.Gmelin, 1768
  » Species Fucus parksii N.L.Gardner, 1940
  » Species Fucus pinnatus N.L.Burman, 1768
  » Species Fucus plumula Esper, 1800
  » Species Fucus polyphyllus S.G.Gmelin, 1768
  » Species Fucus potamogetifolius Turra, 1780
  » Species Fucus pumilus Hudson, 1778
  » Species Fucus racemosus Esper, 1800
  » Species Fucus rigidus Turra, 1780
  » Species Fucus rissoanus Schousboe
  » Species Fucus seta Sprengel, 1809
  » Species Fucus setaceus Esper, 1808
  » Species Fucus setaceus Hudson, 1778
  » Species Fucus setaceus Poiret, 1808
  » Species Fucus setaceus Wulfen, 1803
  » Species Fucus siliculosus Linnaeus, 1767
  » Species Fucus spataeformis Esper, 1808
  » Species Fucus spermophorus Linnaeus, 1767
  » Species Fucus sphaerocephalus Esper, 1804
  » Species Fucus squamulosus Turner, 1809
  » Species Fucus tendo Linnaeus, 1753
  » Species Fucus tenuissimus Esper, 1800
  » Species Fucus tetragonus Goodenough & Woodward, 1797
  » Species Fucus ulvoides Turner, 1809
  » Species Fucus uncialis Schousboe
  » Species Fucus undulatus J.F.Gmelin, 1792
  » Species Fucus uniformis Esper, 1800
  » Species Fucus vermicularis S.G.Gmelin, 1768 (uncertain taxonomic status subjected to verification)
  » Species Fucus virens Schousboe
  » Species Fucus vulpinus Esper, 1800
  » Species Fucus zeylanicus Retzius, 1791
Genus Hesperophycus Setchell & Gardner, 1910
Genus Pelvetia Decaisne & Thuret, 1845
  » Species Pelvetia calaliculata
  » Species Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845
    » Forma Pelvetia canaliculata f. acultilobata (Lami) Ardré, 1961 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845
    » Forma Pelvetia canaliculata f. acutilobata (Lami) Ardré, 1961 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845 (synonym)
    » Forma Pelvetia canaliculata f. interposita Lami, 1939 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845
    » Forma Pelvetia canaliculata f. minima Simmons, 1897 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845 (synonym)
    » Forma Pelvetia canaliculata f. radicans Foslie, 1894 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845
    » Variety Pelvetia canaliculata var. acutilobata Lami, 1939 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845
    » Variety Pelvetia canaliculata var. coralloides S.M.Baker, 1912 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845 (synonym)
    » Variety Pelvetia canaliculata var. libera S.M.Baker, 1912 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845
    » Variety Pelvetia canaliculata var. typica Lami, 1939 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845 (synonym)
  » Species Pelvetia minor Noda
  » Species Pelvetia babingtonii (Harvey) De Toni, 1895 accepted as Silvetia babingtonii (Harvey) E.A.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999
  » Species Pelvetia capensis (Areschoug) De Toni accepted as Bifurcariopsis capensis (Areschoug) Papenfuss, 1940 (synonym)
  » Species Pelvetia compressa (J.Agardh) De Toni, 1895 accepted as Silvetia compressa (J.Agardh) E.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999
  » Species Pelvetia fastigiata (J.Agardh) De Toni, 1895 accepted as Silvetia compressa (J.Agardh) E.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999 (synonym)
  » Species Pelvetia galapagensis (Piccone & Grunow) De Toni, 1895 accepted as Bifurcaria galapagensis (Piccone & Grunow) Womersley, 1964
  » Species Pelvetia siliquosa C.K.Tseng & C.F.Chang, 1953 accepted as Silvetia siliquosa (C.K.Tseng & C.F.Chang) E.A.Serrão, T.O.Cho, S.M.Boo & S.H.Brawley, 1999
  » Species Pelvetia wrightii Okamura, 1902 accepted as Silvetia babingtonii (Harvey) E.A.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999
  » Species Pelvetia wrigtii accepted as Pelvetia wrightii Okamura, 1902
  » Species Pelvetia japonica Yendo (uncertain)
Genus Pelvetiopsis N.L.Gardner, 1910
Genus Silvetia E.Serrão, T.O.Cho, S.M.Boo & S.H.Brawley, 1999
Genus Thaumasia C. Agardh, 1824
  » Species Thaumasia flavia (Linnaeus) C.Agardh, 1824 (uncertain)

Genus Fucodium J.Agardh, 1848 accepted as Ascophyllum Stackhouse, 1809 (synonym)
  » Species Fucodium canaliculatum (Linnaeus) J.Agardh, 1848 accepted as Pelvetia canaliculata (Linnaeus) Decaisne & Thuret, 1845
  » Species Fucodium capense Areschoug, 1854 accepted as Bifurcariopsis capensis (Areschoug) Papenfuss, 1940
  » Species Fucodium chondrophyllum (R.Brown ex Turner) J.Agardh, 1848 accepted as Xiphophora chondrophylla (R.Brown ex Turner) Montagne ex Harvey, 1855
  » Species Fucodium compressum J.Agardh, 1848 accepted as Silvetia compressa (J.Agardh) E.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999
  » Species Fucodium constrictum J.Agardh, 1848 accepted as Axillariella constricta (Kützing) Gruber, 1896 (synonym)
  » Species Fucodium fastigiatum J.Agardh, 1848 accepted as Silvetia compressa (J.Agardh) E.Serrão, T.O.Cho, S.M.Boo & Brawley, 1999 (synonym)
  » Species Fucodium galapagense Piccone & Grunow, 1886 accepted as Bifurcaria galapagensis (Piccone & Grunow) Womersley, 1964
  » Species Fucodium gladiatum (Labillardière) J.Agardh, 1848 accepted as Xiphophora gladiata (Labillardière) Montagne ex Kjellman, 1893
  » Species Fucodium nodosum (Linnaeus) J.Agardh, 1848 accepted as Ascophyllum nodosum (Linnaeus) Le Jolis, 1863
Genus Halicoccus Areschoug, 1847 accepted as Ascophyllum Stackhouse, 1809 (synonym)
Genus Ozothallia Decaisne & Thuret, 1845 accepted as Ascophyllum Stackhouse, 1809 (synonym)
marine, brackish
Not documented
Guiry, M.D. & Guiry, G.M. (2021). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Fucaceae Adanson, 1763. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=143723 on 2021-08-01
Date
action
by
2004-12-21 15:54:05Z
created
2008-10-22 09:06:10Z
checked

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context source (Bermuda) Schneider, C. W. (2003). An annotated checklist and bibliography of the marine macroalgae of the Bermuda Islands. Nova Hedwigia, 76(3-4): 275-361 [details]   

basis of record Guiry, M.D. (2001). Macroalgae of Rhodophycota, Phaeophycota, Chlorophycota, and two genera of Xanthophycota, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 20-38 (look up in IMIS[details]   
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
LanguageName 
Japanese ヒバマタ科  [details]