Marine Makroalgen (marine Chlorophyta, Phaeophyceae & Rhodophyta)

German Red List

Schories, D.; Kuhlenkamp, R.; Schubert, H. & Selig, U. (2013): Rote Liste und Gesamtartenliste der marinen Makroalgen (Chlorophyta, Phaeophyceae et Rhodophyta) Deutschlands. – In: Becker, N., Haupt, H., Hofbauer, N., Ludwig, G. & Nehring, S. (Bearb.): Rote Liste gefährdeter Tiere, Pflanzen und Pilze Deutschlands. Band 2: Meeresorganismen. – Bonn (Bundesamt für Naturschutz). – Naturschutz und Biologische Vielfalt 70 (2): 179–229.

 

Comment: The German national Red List threat categories do not correspond with the international IUCN categories.

Checklist

Scientific name German name Threat Category
A
Acinetospora crinita (Carmich. ex Harv.) Kornmann 1953 Not Threatened
Acrochaete elegans Not established
Acrochaete flustrae (Reinke) O'Kelly 2006 Not Threatened
Acrochaete repens Pringsh. 1863 Not Threatened
Acrochaete wittrockii (Wille) R. Nielsen 1983 Not Threatened
Acrochaetium balticum (Rosenv.) Aleem & Schulz 1952 Data Deficient
Acrochaetium efflorescens (J. Agardh) Nägeli 1861 Not Threatened
Acrochaetium kylinii Hamel 1927 Not established
Acrochaetium minimum Collins 1908 Data Deficient
Acrochaetium moniliforme (Rosenv.) Børgesen 1915 Data Deficient
Acrochaetium parvulum (Kylin) Hoyt 1920 Data Deficient
Acrochaetium reductum (Rosenv.) Hamel 1927 Data Deficient
Acrochaetium rosulatum (Rosenv.) Papenf. 1945 Data Deficient
Acrochaetium secundatum (Lyngb.) Nägeli 1862 Not Threatened
Acrochaetium seiriolanum (R.J.H. Gibson) Rosenv. 1924 Threat of Unknown Extent
Acrochaetium virgatulum (Harv.) Batters 1902 Not Threatened
Acrosiphonia arcta (Dillwyn) Gain 1912 Zweigfadenalge Data Deficient
Acrosiphonia sonderi (Kütz.) Kornmann 1962 Data Deficient
Acrosiphonia spinescens (Kütz.) Kjellm. 1883 Data Deficient
Actinema scutellum Reinsch 1875 Data Deficient
Aegagropila linnaei Kütz. 1843 Data Deficient
Aglaothamnion hookeri (Dillwyn) Maggs & Hommers. 1993 Not Threatened
Aglaothamnion roseum (Roth) Maggs & L'Hardy-Halos 1993 Threat of Unknown Extent
Aglaothamnion tenuissimum (Bonnem.) Feldm.-Maz. 1941 Not Threatened
Ahnfeltia plicata (Huds.) Fr. 1836 Faltentang Threat of Unknown Extent
Antithamnion cruciatum (C. Agardh) Nägeli 1847 Kreuzförmiges Antithamnion Extinct or Lost
Antithamnionella floccosa (O.F. Müll.) Whittick 1980 Extremely Rare
Aphanochaete repens A. Braun 1849 Extinct or Lost
Apoglossum ruscifolium (Turner) J. Agardh 1898 Extinct or Lost
Arthrocladia villosa (Huds.) Duby 1830 Zottentang Extinct or Lost
Ascophyllum nodosum (L.) Le Jol. 1863 Knotentang Not Threatened
Asperococcus fistulosus (Huds.) Hook. 1833 Data Deficient
B
Bangia fuscopurpurea (Dillwyn) Lyngb. 1819 Threat of Unknown Extent
Binuclearia lauterbornii (Schmidle) Proschk.-Lavr. 1966 Not Threatened
Blastophysa rhizopus Reinke 1889 Not Threatened
Blidingia chadefaudii (Feldmann) Bliding 1963 Extremely Rare
Blidingia marginata (J. Agardh) P.J.L. Dang. ex Bliding 1963 Not Threatened
Blidingia minima (Nägeli ex Kütz.) Kylin 1947 Kleiner Darmtang Not Threatened
Blidingia subsalsa (Kjellman) Kornmann & Sahling ex Scagel & al. 1989 Data Deficient
Bolbocoleon piliferum Pringsh. 1862 Data Deficient
Bonnemaisonia hamifera Har. 1891 Data Deficient
Botryoglossum platycarpum (Turner) Kütz. 1843 Data Deficient
Botrytella micromora Bory 1822 Data Deficient
Botrytella reinboldii (Reinke) Kornmann & Sahling 1988 Data Deficient
Brongniartella byssoides (Gooden. & Woodw.) F. Schmitz 1893 Threat of Unknown Extent
Bryopsis hypnoides J.V. Lamour. 1809 Not Threatened
Bryopsis lyngbyei Hornem. 1818 Data Deficient
Bryopsis plumosa (Huds.) C. Agardh 1823 Grüner Federtang Not Threatened
C
Callithamnion corymbosum (Sm.) Lyngb. 1819 Doldentraubiges Callithamnion Threat of Unknown Extent
Callithamnion repens (Dillwyn) Lyngb. 1819 Data Deficient
Callithamnion tetricum (Dillwyn) Gray 1821 Extinct or Lost
Capsosiphon fulvescens (C. Agardh) Setch. & N.L. Gardner 1920 Not Threatened
Ceramium deslongchampsii Chauv. ex Duby 1830 Not Threatened
Ceramium diaphanum (Lightf.) Roth 1806 Not Threatened
Ceramium echionotum J. Agardh 1844 Threat of Unknown Extent
Ceramium gracillium Griff. & Harvey Not established
Ceramium siliquosum (Kütz.) Maggs & Hommers. 1993 Data Deficient
Ceramium tenuicorne (Kütz.) Waern 1952 Not Threatened
Ceramium virgatum Roth 1797 Roter Horntang Not Threatened
Ceratocolax hartzii Rosenv. 1898 Data Deficient
Chaetomorpha ligustica (Kütz.) Kütz. 1849 Not Threatened
Chaetomorpha linum (O.F. Müll.) Kütz. 1845 Not Threatened
Chaetomorpha melagonium (F. Weber & D. Mohr) Kütz. 1845 Not Threatened
Chilionema ocellatum (Kütz.) Kornmann 1953 Data Deficient
Chlorochytrium cohnii E.P. Wright 1877 Data Deficient
Chlorochytrium dermatocolax Reinke 1889 Data Deficient
Chondria dasyphylla (Woodw.) C. Agardh 1817 Extinct or Lost
Chondrus crispus Stackh. 1797 var. crispus Knorpeltang Not Threatened
Chorda filum (L.) Stackh. 1797 Meersaite Not Threatened
Chordaria flagelliformis (O.F. Müll.) C. Agardh 1817 Geißeltang Data Deficient
Chroodactylon ornatum (C. Agardh) Basson 1979 Data Deficient
Cladophora albida (Nees) Kütz. 1843 Not Threatened
Cladophora cristata Kütz. 1843 Data Deficient
Cladophora dalmatica Kütz. 1843 Data Deficient
Cladophora fracta (O.F. Müll. ex Vahl) Kütz. 1843 var. fracta Data Deficient
Cladophora fracta var. intricata (Lyngb.) C. Hoek 1963 Data Deficient
Cladophora glomerata (L.) Kütz. 1843 Seidige Cladophora Data Deficient
Cladophora laetevirens (Dillwyn) Kütz. 1843 Data Deficient
Cladophora lehmanniana (Lindenb.) Kütz. 1843 Data Deficient
Cladophora pygmaea Reinke 1888 Data Deficient
Cladophora rupestris (L.) Kütz. 1843 Felsen-Zweigfadenalge Not Threatened
Cladophora sericea (Huds.) Kütz. 1843 Not Threatened
Cladophora vagabunda (L.) C. Hoek 1963 Data Deficient
Cladosiphon zosterae (J. Agardh) Kylin 1940 Not Threatened
Cladostephus spongiosus (Huds.) C. Agardh 1817 Extremely Rare
Cladostephus verticillatus (Lightf.) Lyngb. 1819 Data Deficient
Coccotylus truncatus (Pall.) M.J. Wynne & J.N. Heine 1992 Gemeine Phyllophora Not Threatened
Codiolum gregarium A. Braun 1855 Data Deficient
Codium fragile (Suringar) Har. 1889 Not Threatened
Colaconema daviesii (Dillwyn) Stegenga 1985 Data Deficient
Colaconema emergens (Rosenv.) R. Nielsen 1994 Data Deficient
Colaconema hallandicum (Kylin) Afonso-Car. & al. 2007 Data Deficient
Colaconema membranaceum (Magnus) Woelk. 1973 Data Deficient
Colaconema nemalionis (De Not. ex L. Dufour) Stegenga 1985 Not Threatened
Compsonema saxicola (Kuck.) Kornmann 1953 Data Deficient
Corallina officinalis L. 1758 Offizinelles Korallenmoos Not Threatened
Corynophlaea crispa (Harv.) Kuck. 1929 Extinct or Lost
Cruoria pellita (Lyngb.) Fr. 1835 Threatened with Extinction
Cutleria multifida (Turner) Grev. 1830 Gabeltang Extinct or Lost
Cystoclonium purpureum (Huds.) Batters 1902 Purpurtang Not Threatened
D
Dasya baillouviana (S.G. Gmel.) Mont. 1841 Not Threatened
Delesseria sanguinea (Huds.) J.V. Lamour. 1813 Blutroter Seeampfer Not Threatened
Derbesia marina (Lyngb.) Kjellman 1883 Büschelalge Extremely Rare
Desmarestia aculeata (L.) J.V. Lamour. 1813 Stacheltang Not Threatened
Desmarestia viridis (O.F. Müll.) J.V. Lamour. 1813 Federige Desmarestia Not Threatened
Dictyosiphon chordaria Aresch. 1847 Threat of Unknown Extent
Dictyosiphon foeniculaceus (Huds.) Grev. 1830 Highly Threatened
Dictyota dichotoma (Huds.) J.V. Lamour. 1809 Gabelzunge Extremely Rare
Dudresnaya verticillata (With.) Le Jol. 1863 Extremely Rare
Dumontia contorta (S.G. Gmel.) Rupr. 1850 Wurmblatt Not Threatened
E
Ectocarpus fasciculatus Harv. 1841 var. fasciculatus Data Deficient
Ectocarpus siliculosus (Dillwyn) Lyngb. 1819 var. siliculosus Felsen-Faseralge Not Threatened
Ectocarpus siliculosus var. dasycarpus (Kuck.) T. Gallardo 1992 Data Deficient
Ectocarpus tomentosus (Huds.) Lyngb. 1819 Data Deficient
Elachista fucicola (Velley) Aresch. 1842 Near Threatened
Elachista stellaris Aresch. 1842 Extinct or Lost
Enteromorpha flexuosa subsp. linziformis (Bliding) Bliding 1963 Not Threatened
Epicladia perforans (Huber) R. Nielsen 1980 Extinct or Lost
Epicladia phillipsii (Batters) R. Nielsen 1984 Not Threatened
Epicladia testarum (Kylin) R. Nielsen 1980 Not Threatened
Erythrocladia elegans Not established
Erythrocladia irregularis Rosenv. 1909 Data Deficient
Erythrocladia reflexa Not established
Erythrodermis traillii (Holmes ex Batters) Guiry & Garbary 1990 Data Deficient
Erythropeltis discigera (Berthold) F. Schmitz 1896 Data Deficient
Erythrotrichia carnea (Dillwyn) J. Agardh 1883 Not Threatened
Erythrotrichia reflexa (P. Crouan & H. Crouan) Thur. ex De Toni 1897 Extremely Rare
Eudesme virescens (Carmich. ex Berk.) J. Agardh 1880 Threatened
Eugomontia sacculata Kornmann 1960 Not Threatened
F
Fucus ceranoides L. 1753 Data Deficient
Fucus evanescens C. Agardh 1820 Not Threatened
Fucus serratus L. 1753 Sägetang Threat of Unknown Extent
Fucus spiralis L. 1753 Spiraltang Not Threatened
Fucus vesiculosus L. 1753 f. vesiculosus Blasentang Near Threatened
Fucus vesiculosus f. mytili (Nienb.) Nienhuis 1970 Threatened
Furcellaria lumbricalis (Huds.) J.V. Lamour. 1813 Gabeltang Not Threatened
G
Gayralia oxysperma (Kütz.) K.L. Vinogr. ex Scagel & al. 1989 Data Deficient
Giraudia sphacelarioides Derbès & Solier 1851 Data Deficient
Gloiosiphonia capillaris (Huds.) Carmich. 1833 Extremely Rare
Gomontia polyrhiza (Lagerh.) Bornet & Flahault 1888 Not Threatened
Gracilaria gracilis (Stackh.) Steentoft & al. 1995 Besentang Extremely Rare
Gracilaria vermiculophylla (Ohmi) Papenf. 1967 Not Threatened
Gracilariopsis longissima (S.G. Gmel.) Steentoft & al. 1995 Extremely Rare
Gymnogongrus crenulatus (Turner) J. Agardh 1851 Data Deficient
H
Haemescharia hennedyi (Harv.) K.L. Vinogr. & Yacovleva 1989 Data Deficient
Halarachnion ligulatum (Woodw.) Kütz. 1843 Gefranster Spinnentang Not Threatened
Halidrys siliquosa (L.) Lyngb. 1819 Schotentang, Meereiche Threatened with Extinction
Halochlorococcum dilatatum Kornmann & Sahling 1983 Data Deficient
Halochlorococcum marinum P.A. Dang. 1965 Data Deficient
Halochlorococcum moorei (N.L. Gardner) Kornmann & Sahling 1983 Data Deficient
Halorhiza vaga Kütz. 1843 Data Deficient
Halosiphon tomentosus (Lyngb.) Jaasund 1957 Not Threatened
Halothrix lumbricalis (Kütz.) Reinke 1888 Not established
Halurus flosculosus (J.Ellis) Maggs & Hommers. 1993 Not Threatened
Haplospora globosa Kjellman 1872 Data Deficient
Harveyella mirabilis (Reinsch) F. Schmitz & Reinke 1889 Data Deficient
Hecatonema terminale (Kütz.) Kylin 1937 Threat of Unknown Extent
Helminthocladia calvadosii (J.V. Lamour. ex Duby) Setch. 1925 Extinct or Lost
Helminthora divaricata (C. Agardh) J. Agardh 1852 Extinct or Lost
Herponema velutinum (Grev.) J. Agardh 1890 Data Deficient
Hildenbrandia crouanii J. Agardh 1852 Data Deficient
Hildenbrandia rubra (Sommerf.) Menegh. 1841 Not Threatened
Himanthalia elongata (L.) Gray 1821 Riementang Extremely Rare
Hincksia fuscata (Zanardini) P.C. Silva 1987 Data Deficient
Hincksia granulosa (Sm.) P.C. Silva 1987 Data Deficient
Hincksia hincksiae (Harv.) P.C. Silva 1987 Data Deficient
Hincksia ovata (Kjellman) P.C. Silva 1987 Extremely Rare
Hincksia sandriana (Zanardini) P.C. Silva 1987 Threatened with Extinction
Hormotrichum vermiculare Kütz. 1849 Data Deficient
Hydrolithon farinosum (J.V. Lamour.) Penrose & Y.M. Chamb. 1993 Extinct or Lost
I
Isthmoplea sphaerophora (Carmich.) Kjellman 1879 Data Deficient
J
Jania rubens (L.) J.V. Lamour. 1816 var. rubens Extinct or Lost
Jania rubens var. corniculata (L.) Yendo 1905 Data Deficient
K
Kornmannia leptoderma (Kjellman) Bliding 1969 Extinct or Lost
Kuckuckia spinosa (Kütz.) Kornmann 1958 Data Deficient
Kuetzingiella holmesii (Batters) Kornmann 1956 Data Deficient
Kuetzingiella maculans (Kuck.) Kornmann Data Deficient
Kylinia humilis (Rosenv.) Papenf. 1947 Data Deficient
Kylinia kylinoides (Feldmann) Pankow 1971 Data Deficient
L
Laminaria digitata (Huds.) J.V. Lamour. 1813 Fingertang Not Threatened
Laminaria hyperborea (Gunnerus) Foslie 1884 Palmentang Not Threatened
Laminariocolax aecidioides (Rosenv.) E. Burkhardt & A.F. Peters 1998 Data Deficient
Laminariocolax tomentosoides (Farl.) Kylin 1947 Not Threatened
Laminarionema elsbetiae H. Kawai & Tokuyama 1995 Data Deficient
Laurencia pinnatifida (Huds.) J. V. Lamour. 1813 Not established
Leathesia marina (Lyngb.) Decsn. 1842 Threatened
Leptonematella fasciculata (Reinke) P.C. Silva 1959 Not Threatened
Lithophyllum orbiculatum (Foslie) Foslie 1900 Data Deficient
Lithothamnion sonderi Hauck 1883 Not Threatened
Litosiphon laminariae (Lyngb.) Harv. 1849 Kleine Schlauchalge Data Deficient
Lomentaria clavellosa (Turner) Gaillon 1828 Extremely Rare
Lomentaria orcadensis (Harv.) F.S. Collins ex W.R. Taylor 1937 Extremely Rare
Lophosiphonia obscura (C. Agardh) Falkenb. 1897 Data Deficient
M
Mastocarpus stellatus (Stackh.) Guiry 1984 Sterntang Not Threatened
Melobesia membranacea (Esper) J.V. Lamour. 1812 Data Deficient
Membranoptera alata (Huds.) Stackh. 1809 Flügel-Seeampfer Threat of Unknown Extent
Mesogloia vermiculata (Sm.) Gray 1821 Würmchentang Extremely Rare
Microspongium gelatinosum Reinke 1888 Not Threatened
Microspongium globosum Reinke 1888 Not Threatened
Microspongium tenuissimum (Hauck) A.F. Peters 2003 Data Deficient
Mikrosyphar polysiphoniae Kuck. 1897 Data Deficient
Mikrosyphar porphyrae Kuck. 1897 Data Deficient
Monostroma arcticum Wittr. 1866 Data Deficient
Monostroma balticum (Aresch.) Wittr. 1866 Not Threatened
Monostroma grevillei (Thur.) Wittr. 1866 Trompetenalge Not Threatened
Myrionema balticum (Reinke) Foslie 1894 Data Deficient
Myrionema magnusii (Sauv.) Loiseaux 1967 Not Threatened
Myrionema seriatum (Reinke) Kylin 1947 Data Deficient
Myrionema strangulans Grev. 1827 Data Deficient
Myriotrichia clavaeformis Harv. 1834 Extinct or Lost
N
Nemalion helminthoides (Velley) Batters 1902 Wurmtang Extinct or Lost
Neosiphonia elongella (Harv.) M.S. Kim & I.K. Lee 1999 Data Deficient
Neosiphonia harveyi (J. Bailey) M.S. Kim & al. 2001 Data Deficient
O
Ochlochaete hystrix Thwaites ex Harv. 1849 var. hystrix Data Deficient
Ochlochaete hystrix var. ferox (Huber) R. Nielsen 1978 Not Threatened
Odonthalia dentata (L.) Lyngb. 1819 Not established
Ostreobium quekettii Bornet & Flahault 1889 Data Deficient
P
Palmaria palmata (L.) O. Kuntze 1898 Not established
Pelvetia canaliculata (L.) Decaisne & Thuret 1845. Not established
Percursaria percursa (C. Agardh) Rosenv. 1893 Not Threatened
Petalonia fascia (O.F. Müll.) Kuntze 1898 Bandblatt Not Threatened
Petalonia zosterifolia (Reinke) Kuntze 1898 Not Threatened
Petroderma maculiforme (Wollny) Kuck. 1897 Not Threatened
Petrospongium berkeleyi (Grev.) Nägeli ex Kütz. 1858 Extinct or Lost
Peyssonnelia dubyi P. Crouan & H. Crouan 1844 Data Deficient
Phaeophila dendroides (P. Crouan & H. Crouan) Batters 1902 Data Deficient
Phaeostroma pustulosum Kuck. 1893 Data Deficient
Phycocelis foecunda Strömf. 1888 Data Deficient
Phycodrys rubens (L.) Batters 1902 Ausgebuchteter Seeampfer, Ausgebuchtete Delesseria Not Threatened
Phyllophora crispa (Huds.) P.S. Dixon 1964 Krauser Tang Threatened with Extinction
Phyllophora pseudoceranoides (S.G. Gmel.) Newroth & A.R.A. Taylor 1971 Hautblättriger Tang Not Threatened
Phymatolithon calcareum (Pall.) W.H. Adey & D.L. McKibbin 1970 Knolliger Kalktang Data Deficient
Phymatolithon laevigatum (Foslie) Foslie 1898 Data Deficient
Phymatolithon lenormandii (Aresch.) W.H. Adey 1966 Threat of Unknown Extent
Phymatolithon purpureum (P. Crouan & H. Crouan) Woelk. & L.M. Irvine 1986 Data Deficient
Pilinia rimosa Kütz. 1843 Not Threatened
Planophila microcystis (P.J.L. Dang.) Kornmann & Sahling 1983 Data Deficient
Pleurocladia lucifuga (Kuck.) R.T. Wilce 1966 Data Deficient
Plocamium cartilagineum (L.) P.S. Dixon 1967 Kammtang Extremely Rare
Plumaria plumosa (Huds.) Kuntze 1891 Zierliche Seefeder Not Threatened
Pneophyllum fragile Kütz. 1843 Data Deficient
Pneophyllum myriocarpum (P. Crouan & H. Crouan) Y.M. Chamb. 1983 Data Deficient
Pogotrichum filiforme Reinke 1892 Data Deficient
Polyides rotundus (Huds.) Grev. 1830 Scherentang Not Threatened
Polysiphonia boldii M.J. Wynne & P. Edwards Data Deficient
Polysiphonia elongata (Huds.) Spreng. 1827 Not Threatened
Polysiphonia fibrillosa (Dillwyn) Spreng. 1827 Not Threatened
Polysiphonia fucoides (Huds.) Grev. 1824 Not Threatened
Polysiphonia lanosa (L.) Tandy 1931 Data Deficient
Polysiphonia nigra (Huds.) Batters 1902 Data Deficient
Polysiphonia stricta (Dillwyn) Grev. 1824 Not Threatened
Porphyra dioica J. Brodie & L.M. Irvine 1997 Data Deficient
Porphyra laciniata C. Agardh 1824 Near Threatened
Porphyra leucosticta Thur. 1863 Data Deficient
Porphyra linearis Grev. 1830 Not Threatened
Porphyra ochotensis Nagai 1941 Data Deficient
Porphyra purpurea (Roth) C. Agardh 1824 Data Deficient
Porphyra umbilicalis (L.) Kütz. 1843 Not Threatened
Porphyra yezoensis Ueda 1932 Data Deficient
Porphyropsis coccinea (J. Agardh ex Aresch.) Rosenv. 1909 Data Deficient
Porphyropsis imperfecta Kornmann & Sahling 1985 Data Deficient
Porphyrostromium ciliare (Carmich.) M.J. Wynne 1986 Data Deficient
Prasiola calophylla (Carmich. ex Grev.) Kütz. 1845 Data Deficient
Prasiola furfuracea (Mert. ex Hornem.) Kütz. 1843 Data Deficient
Prasiola stipitata Suhr ex Jess. 1848 Gestielte Prasiola Not Threatened
Pringsheimiella scutata (Reinke) Höhn. ex Marchew. 1925 Data Deficient
Protectocarpus hecatonemoides Kuck. 1955 Extinct or Lost
Protectocarpus speciosus (Børgesen) Kornmann 1955 Not Threatened
Protomonostroma undulatum (Wittr.) K.L. Vinogr. 1969 Data Deficient
Pseudendoclonium dynamenae R. Nielsen 1985 Data Deficient
Pseudendoclonium fucicola (Rosenv.) R. Nielsen 1980 Not Threatened
Pseudendoclonium marinum (Reinke) Aleem & E. Schulz 1952 Not Threatened
Pseudendoclonium submarinum Wille 1901 Near Threatened
Pseudolithoderma extensum (P. Crouan & H. Crouan) S. Lund 1959 Not Threatened
Pseudolithoderma rosenvingei (Waern) S. Lund 1959 Not Threatened
Pseudolithoderma subextensum (Waern) S. Lund 1959 Not Threatened
Pterothamnion plumula (J. Ellis) Nägeli 1855 Extremely Rare
Punctaria latifolia Grev. 1830 Breitblättriger Meerwegerich Extremely Rare
Punctaria plantaginea (Roth) Grev. 1830 Data Deficient
Punctaria tenuissima (C. Agardh) Grev. 1830 Data Deficient
Pylaiella littoralis (L.) Kjellman 1872 Not Threatened
Pylaiella varia Kjellman 1883 Data Deficient
R
Ralfsia bornetii Kuck. 1894 Data Deficient
Ralfsia lucida S. Lund 1967 Data Deficient
Ralfsia verrucosa (Aresch.) Aresch. 1845 Warzige Braunalge Not Threatened
Rhizoclonium hieroglyphicum (C. Agardh) Kütz. 1843 Data Deficient
Rhizoclonium riparium (Roth) Harv. 1849 var. riparium Not Threatened
Rhizoclonium riparium var. implexum (Dillwyn) Rosenv. 1893 Data Deficient
Rhodochorton purpureum (Lightf.) Rosenv. 1900 Data Deficient
Rhodomela confervoides (Huds.) P.C. Silva 1952 Not Threatened
Rhodophysema elegans (P. Crouan & H. Crouan ex J. Agardh) P.S. Dixon 1964 Not Threatened
Rhodophysema georgei Batters 1900 Not Threatened
Rhodothamniella floridula (Dillwyn) Feldmann 1978 Not Threatened
Rosenvingiella constricta (Setch. & N.L. Gardner) P.C. Silva 1957 Extremely Rare
Rosenvingiella polyrhiza (Rosenv.) P.C. Silva 1957 Data Deficient
Ruthnielsenia tenuis (Kylin) O'Kelly & al. 2004 Data Deficient
S
Saccharina latissima (L.) C.E. Lane & al. 2006 Zuckertang Not Threatened
Sahlingia subintegra (Rosenv.) Kornmann 1989 Data Deficient
Sargassum muticum (Yendo) Fensholt 1955 Not Threatened
Sauvageaugloia divaricata (Clemente) Cremades 1990 Extinct or Lost
Scagelia pylaisaei (Mont.) M.J. Wynne 1985 Extinct or Lost
Scagelothamnion pusillum (Rupr.) Athanas. 1996 Not Threatened
Scinaia furcellata (Turner) J. Agardh 1852 subsp. furcellata Extinct or Lost
Scinaia furcellata subsp. scandinavica (Maggs & Guiry) Athanas. 1996 Data Deficient
Scytosiphon lomentaria (Lyngb.) Link 1833 Geschnürter Schlauchtang Not Threatened
Sorapion simulans Kuck. 1894 Extremely Rare
Spermatochnus paradoxus (Roth) Kütz. 1843 Extinct or Lost
Spermothamnion repens (Dillwyn) Rosenv. 1924 Threat of Unknown Extent
Sphacelaria arctica Harv. 1858 Data Deficient
Sphacelaria caespitula Lyngb. 1819 Data Deficient
Sphacelaria cirrosa (Roth) C. Agardh 1824 Threat of Unknown Extent
Sphacelaria nana Nägeli ex Kütz. 1855 Threatened with Extinction
Sphacelaria plumigera Holmes ex Hauck 1884 Not Threatened
Sphacelaria plumosa Lyngb. 1819 Data Deficient
Sphacelaria plumula Zanardini 1865 Extinct or Lost
Sphacelaria racemosa Grev. 1824 Data Deficient
Sphacelaria radicans (Dillwyn) C. Agardh 1824 Not Threatened
Sphacelaria reticulata Lyngb. 1818 Data Deficient
Sphacelaria rigidula Kütz. 1843 Data Deficient
Sphaerotrichia divaricata (C. Agardh) Kylin 1940 Threat of Unknown Extent
Spongomorpha aeruginosa (L.) C. Hoek 1963 Wollige Zweigfadenalge Not Threatened
Spongomorpha tomentosa (Lightf.) Kütz. 1845 Data Deficient
Spongonema tomentosum (Huds.) Kütz. 1849 Filzige Braunalge Not Threatened
Sporochnus pedunculatus (Huds.) C. Agardh 1820 Stieltang Extinct or Lost
Stictyosiphon soriferus (Reinke) Rosenv. 1935 Data Deficient
Stictyosiphon tortilis (Rupr.) Reinke 1889 Schlauchalge Not Threatened
Stigeoclonium protensum (Dillwyn) Kütz. 1845 Not Threatened
Stigeoclonium tenue (C. Agardh) Kütz. 1843 Not Threatened
Stilophora nodulosa (C. Agardh) P.C. Silva 1996 Not Threatened
Stilophora tenella (Esper) P.C. Silva 1996 Not Threatened
Stragularia clavata (Harv.) Hamel 1931 Data Deficient
Streblonema fasciculatum Thur. 1863 Extinct or Lost
Streblonema maculans (P.A. Dang.) South & Tittley 1986 Data Deficient
Striaria attenuata (C. Agardh) Grev. 1828 Threatened with Extinction
Stromatella monostromatica (P.J.L. Dang.) Kornmann & Sahling 1985 Data Deficient
Stromatella papillosa (P.J.L. Dang.) Kornmann & Sahling 1985 Data Deficient
Stylonema alsidii (Zanardini) K.M. Drew 1956 Data Deficient
Stypocaulon scoparium (L.) Kütz. 1843 Pinsel-Halopteris Extinct or Lost
Sykidion droebakense Wille 1901 Data Deficient
Symphyocarpus strangulans Rosenv. 1893 Extinct or Lost
Syncoryne reinkei R. Nielsen & P.M. Pedersen 1977 Data Deficient
T
Tilopteris mertensii (Turner) Kütz. 1849 Extremely Rare
Titanoderma corallinae (P. Crouan & H. Crouan) Woelk. & al. 1985 Extinct or Lost
Titanoderma laminariae (P. Crouan & H. Crouan) Y.M. Chamb. 1991 Extinct or Lost
Titanoderma pustulatum (J.V. Lamour.) Nägeli 1858 Data Deficient
Tsengia bairdii (Farl.) K.C. Fan & Y.P. Fan 1962 Extremely Rare
U
Ulonema rhizophorum Foslie 1894 Not Threatened
Ulothrix flacca (Dillwyn) Thur. 1863 Kraushaaralge Not Threatened
Ulothrix implexa (Kütz.) Kütz. 1849 Not Threatened
Ulothrix speciosa (Carmich.) Kütz. 1849 Data Deficient
Ulothrix subflaccida Wille 1901 Data Deficient
Ulothrix zonata (Weber & Mohr) Kütz. 1843 Not Threatened
Ulva clathrata (Roth) C. Agardh 1811 Not Threatened
Ulva compressa L. 1753 Flacher Darmtang Not Threatened
Ulva curvata (Kütz.) De Toni 1889 Not Threatened
Ulva flexuosa Wulfen 1803 Not Threatened
Ulva intestinalis L. 1753 Darmtang Not Threatened
Ulva lactuca L. 1753 Meersalat Not Threatened
Ulva linza L. 1753 Gewellter Darmtang Not Threatened
Ulva prolifera O.F. Müll. 1778 Not Threatened
Ulva pseudocurvata Koeman & C. Hoek 1981 Extremely Rare
Ulva radiata (J. Agardh) H.S. Hayden & al. 2003 Not Threatened
Ulva ralfsii (Harv.) Le Jol. 1863 Not Threatened
Ulva rigida C. Agardh 1823 Data Deficient
Ulva scandinavica Bliding 1968 Data Deficient
Ulva simplex (K.L. Vinogr.) H.S. Hayden & al. 2003 Data Deficient
Ulva tenera Kornmann & Sahling 1994 Extremely Rare
Ulva torta (Mert.) Trev. 1841 Not Threatened
Ulvaria splendens (Rupr.) K.L. Vinogr. 1979 Not Threatened
Ulvella lens P. Crouan & H. Crouan 1859 Data Deficient
Urospora bangioides (Harv.) Holmes & Batters 1891 Data Deficient
Urospora curvata (Printz) Kornmann 1994 Data Deficient
Urospora neglecta (Kornmann) Lokhorst & Trask 1981 Data Deficient
Urospora penicilliformis (Roth) Aresch. 1866 Not Threatened
Urospora wormskioldii (Mert. ex Hornem.) Rosenv. 1893 Data Deficient