| Species | as Species | Doubtful |
|---|
Connected successfully| Acanthoeca brevipoda Ellis, 1930 | | |
| Acanthoica quattrospina Lohman, 1903 | | |
| Achnanthes brevipes C.A. Agardh, 1824 | | |
| Achnanthes longipes Agardh, 1824 | | |
| Achradina pulchra Lohmann, 1902 | | |
| Actinastrum hantzschii Lagerheim, 1882 | | |
| Akashiwo sanguinea (K.Hirasaka) G.Hansen & Ø.Moestrup | | |
| Alexandrium minutum Halim, 1960 | | |
| Alexandrium monilatum (Howell, 1953) Balech, 1985 | | |
| Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985 | | |
| Alexandrium tamarense (Lebour, 1925) Balech, 1985 | | |
| Algirosphaera quadricornu (Schiller, 1914) Norris, 1984 | | |
| Amphidinium crassum Lohmann, 1908 | | |
| Amphidinium extensum Wulff, 1916 | | |
| Amphidinium globosum Schröder, 1911 | | |
| Amphidinium inflatum Kofoid, 1931 | | |
| Amphidinium longum Lohmann, 1908 | | |
| Amphidinium operculatum Claparède & Lachmann, 1859 | | |
| Amphidinium ovum Herdman, 1924 | | |
| Amphidinium sphenoides Wulff, 1916 | | |
| Amphora hyalina Kützing, 1844 | | |
| Amphora marina W. Smith 1857 | | |
| Amphora ovalis (Kützing) Kützing, 1844 | | |
| Amylax perpusila Meunier | | |
| Amylax triacantha (Jörgensen, 1899) Sournia, 1984 | | |
| Anabaenopsis arnoldii Apetk | | |
| Anacanthoica acanthos (Schiller) Deflandre, 1952 | ''Acanthoica acanthos''; | |
| Ankistrodesmus falcatus (Corda) Ralfs, 1848 | | |
| Apedinella radians (Lohmann) Campbell, 1973 | | |
| Archaeperidinium minutum (Kofoid) Jorgensen, 1912 | ''Protoperidinium minutum''; | |
| Asterionellopsis glacialis (Castracane) Round in Round et al., 1990 | | |
| Azadinium spinosum Elbrächter & Tillmann, 2009 | | |
| Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 | | |
| Bacteriastrum hyalinum Lauder, 1864 | | |
| Bacterosira bathyomphala (Cleve) E.E. Syvertsen & G.R. Hasle, 1993 | ''Bacterosira fragilis''; | |
| Bicosta antennigera Moestrup, 1979 | | |
| Bicosta spinifera (Throndsen, 1970) Leadbeater, 1978 | | |
| Braarudosphaera bigelowii (Gran & Braarud) Deflandre, 1947 | | |
| Caecitellus parvulus (Griessmann, 1913) Patterson, Nygaard, Steinberg & Turley, 1993 | | |
| Cafeteria minuta (Griessmann, 1913) Larsen & Patterson, 1990 | | |
| Calcidiscus leptoporus (Murray & Blackman, 1898) Loeblich & Tappan, 1978 | | |
| Calyptrosphaera globosa Lohman, 1902 | | |
| Calyptrosphaera sphaeroidea Schiller, 1913 | | |
| Campylodiscus fastuosus Ehrenberg, 1845 | | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | | |
| Ceratium fusus var. seta (Ehrenberg) Sournia, 1966 | | |
| Chaetoceros affinis Lauder, 1864 | | |
| Chaetoceros anastomosans Grunow | | |
| Chaetoceros compressus Lauder, 1864 | | |
| Chaetoceros costatus Pavillard, 1911 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros danicus P.T.Cleve, 1889 | | |
| Chaetoceros decipiens P.T. Cleve, 1873 | | |
| Chaetoceros diadema (Ehrenberg) Gran, 1897 | | |
| Chaetoceros didymus Ehrenberg, 1845 | | |
| Chaetoceros dubius Pr.-Lavrenko | | |
| Chaetoceros heterovalvatus Prosckina-Lavrenko | | |
| Chaetoceros holsaticus Schütt, 1895 | | |
| Chaetoceros insignis Prosckina-Lavrenko | | |
| Chaetoceros laciniosus Schütt, 1895 | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros muelleri Lemmermann, 1898 | | |
| Chaetoceros rigidus Ostenfeld | | |
| Chaetoceros scabrosus Prosckina-Lavrenko | | |
| Chaetoceros similis P.T. Cleve, 1896 | | |
| Chaetoceros similis f. solitarius Proschkina-Lavrenko | | |
| Chaetoceros simplex Ostenfeld, 1901 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chaetoceros subtilis (Proschkina-Lavrenko) Proschkina-Lavrenko, 1961 | | |
| Chaetoceros tenuissimus Meunier, 1913 | | |
| Chaetoceros teres P.T. Cleve, 1896 | | |
| Chaetoceros wighamii Brightwell, 1856 | | |
| Chaetoceros willei Grunow, 1897 | | |
| Chlorogonium elongatum (P.A.Dangeard) Francé 1897 | | |
| Chlorogonium fusiforme Matvienko 1938 | | |
| Chrysochromulina polylepis Manton & Parke, 1962 | | |
| Climaconeis inflexa (Brébisson ex Kützing) E.J.Cox, 1982 | ''Amphora inflexa''; | |
| Coccolithus pelagicus (Wallich, 1877) Schiller, 1930 | | |
| Cocconeis scutellum (Grunow in Van Heurck) P.T. Cleve, 1896 | | |
| Cochlodinium adriaticum Schiller, 1933 | | |
| Cochlodinium archimedes (Pouchet, 1883) Lemmermann, 1899 | | |
| Cochlodinium citron Kofoid & Swezy, 1921 | | |
| Cochlodinium pupa Lebour, 1925 | | |
| Coscinodiscus apiculatus Ehrenberg, 1844 | | |
| Coscinodiscus commutatus Grunow, 1884 | | |
| Coscinodiscus gigas Ehrenb. 1841 | | |
| Coscinodiscus granii Gough, 1905 | | |
| Coscinodiscus janischii Schmidt, 1878 | | |
| Coscinodiscus jonesianus (Greville) Ostenfeld, 1915 | | |
| Coscinodiscus nitidus W. Gregory, 1857 | | |
| Coscinodiscus perforatus (Forti) Hust., 1928 | | |
| Coscinodiscus radiatus Ehrenberg, 1841 | | |
| Cryptomonas erosa Ehrenberg, 1832 | | |
| Cryptomonas paramaecium (Ehrenberg) Hoef-Emden & Melkonian 2003 | | |
| Cyclotella caspia Grunow, 1878 | | |
| Cyclotella choctawhatcheeana Prasad, 1990 | | |
| Cyclotella meneghiniana Kützing, 1844 | | |
| Cylindrotheca closterium (Ehrenberg) Reiman & Lewin, 1964 | | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | | |
| Desmarella moniliformis Kent, 1880 | | |
| Detonula confervacea (P.T. Cleve) Gran, 1900 | | |
| Detonula pumila (Castracane) Gran, 1900 | | |
| Diaphanoeca grandis Ellis, 1930 | | |
| Diaphanoeca pedicellata Leadbeater, 1972 | | |
| Diatoma tenue C.A. Agardh, 1812 | | |
| Diatoma vulgare Bory de Saint-Vincent, 1824 | | |
| Dichotomococcus curvatus Korshikov 1939 | | |
| Dictyocha fibula Ehrenberg | | |
| Dictyocha speculum Ehrenberg | | |
| Dinobryon balticum (Schütt) Lemmermann, 1900 | ''Dinobryon pellucidum''; | |
| Dinobryon sertularia Ehrenberg, 1834 | | |
| Dinophysis acuminata Claparède & Lachmann, 1859 | | |
| Dinophysis acuta Ehrenberg, 1841 | | |
| Dinophysis caudata Saville-Kent, 1881 | | |
| Dinophysis norvegica Claparède & Lachmann, 1859 | | |
| Dinophysis pulchella (Lebour) Balech | | |
| Dinophysis pusilla Jörgensen, 1923 | | |
| Dinophysis sacculus Stein, 1883 | | |
| Diploneis didyma (Ehrenberg) P.T. Cleve, 1894 | | |
| Diploneis ovalis (Hilse in Rabenhorst) P.T. Cleve, 1891 | | |
| Diplopsalis lenticula Bergh, 1881 | | |
| Discosphaera tubifera (Murray & Blackman) Ostenfeld 1900 | | |
| Distephanus speculum (Ehrenberg) Haeckel, 1887 | | |
| Ditylum brightwellii (T. West) Grunow in Van Heurck, 1883 | | |
| Dunaliella salina (Dunal) Teodoresco, 1905 | | |
| Ebria tripartita (Shumann) Lemmermann, 1899 | | |
| Emiliania huxleyi (Lohmann) Hay & Mohler, 1967 | | |
| Entomoneis paludosa (W. Smith) Reimer, 1975 | | |
| Epithemia sorex Kützing, 1844 | | |
| Euglena acus Ehrenberg, 1830 | | |
| Euglena geniculata (F. Schmitz) Dujardin, 1841 | | |
| Euglena viridis (O.F. Müller) Ehrenberg, 1832 | | |
| Eunotia bilunaris (Ehrenberg) Mills, 1934 | | |
| Eutreptia lanowii Steuer, 1904 | | |
| Eutreptia viridis Perty | | |
| Eutreptiella hirudoidea Butcher, 1961 | | |
| Fallacia pygmaea (Kützing) Stickle & Mann in Round et al., 1990 | | |
| Glenodiniopsis steinii (Lemmermann) Woloszynska, 1916 | ''Glenodinium cinctum''; | |
| Glenodinium inflatum Meunier | | |
| Glenodinium paululum Lindemann | | |
| Glenodinium pilula (Ostenfeld) Schiller | | |
| Gloeocapsopsis crepidinum (Thuret) Geitler ex Komárek, 1993 | | |
| Gomphonema parvulum (Kützing) Kützing, 1849 | | |
| Goniodoma polyedricum (Pouchet, 1883) Jørgensen, 1899 | | |
| Gonyaulax apiculata (Pénard, 1891) Entz, 1904 | | |
| Gonyaulax cochlea Meunier, 1919 | | |
| Gonyaulax diegensis Kofoid, 1911 | | |
| Gonyaulax digitale (Pouchet, 1883) Kofoid, 1911 | | |
| Gonyaulax minuta Kofoid & Michener, 1911 | | Doubtful |
| Gonyaulax monacantha Pavillard, 1916 | | |
| Gonyaulax orientalis Lindemann, 1924 | | |
| Gonyaulax polygramma Stein, 1883 | | |
| Gonyaulax scrippsae Kofoid, 1911 | | |
| Gonyaulax spinifera (Claparède & Lachmann, 1859) Diesing, 1866 | | |
| Gonyaulax verior Sournia, 1973 | | |
| Grammatophora marina (Lyngbye) Kützing, 1844 | | |
| Guinardia delicatula (Cleve) G.R. Hasle, 1996 | | |
| Guinardia striata (Stoltherfoth) Hasle, 1997 | | |
| Gymnodinium agiliforme Schiller, 1928 | | |
| Gymnodinium flavum Kofoid & Swezy, 1921 | | |
| Gymnodinium fuscum (Ehrenberg, 1834) Stein, 1883 | | |
| Gymnodinium gracile Bergh, 1881 | | Doubtful |
| Gymnodinium hamulus Kofoid & Swezy 1921 | | |
| Gymnodinium helveticum Penard 1891 | ''Glenodinium apiculatum''; | |
| Gymnodinium heterostriatum Kofoid & Swezy, 1921 | | |
| Gymnodinium lacustre Schiller, 1933 | | |
| Gymnodinium lantzschii Utermöhl | | |
| Gymnodinium marinum Saville-Kent, 1881 | | |
| Gymnodinium najadeum Schiller, 1928 | | |
| Gymnodinium nanum Schiller, 1928 | | |
| Gymnodinium neapolitanum Schiller, 1928 | | |
| Gymnodinium punctatum Pouchet, 1887 | | |
| Gymnodinium rhomboides Schütt, 1895 | | |
| Gymnodinium simplex (Lohmann, 1911) Koifoid & Swezy, 1921 | | |
| Gymnodinium sulcatum Kofoid & Swezy, 1921 | | |
| Gymnodinium uberrimum (G.J. Allman) Kofoid & Swezy, 1921 | | |
| Gymnodinium variabile Herdman, 1924 | | |
| Gyrodinium flagellare Schiller, 1928 | | |
| Gyrodinium fusus (Meunier, 1910) Akselman, 1985 | | |
| Gyrodinium lachryma (Meunier, 1910) Kofoid & Swezy, 1921 | | |
| Gyrodinium nasutum (Wulff, 1916) Schiller, 1933 | | |
| Gyrodinium ovum (Schütt, 1895) Kofoid & Swezy, 1921 | | |
| Gyrodinium pingue (Schütt, 1895) Kofoid et Swezy, 1921 | | |
| Gyrodinium pusillum (Schilling) Kofoid & Swezy | | |
| Gyrodinium spirale (Bergh, 1881) Kofoid et Swezy, 1921 | | |
| Gyrodinium varians (Wulff, 1916) Schiller, 1933 | | |
| Gyrodinium wulffii Schiller, 1933 | | |
| Gyrosigma distortum (W. Smith) Griffith & Henfrey, 1856 | | |
| Helladosphaera cornifera (Schiller, 1913) Kamptner, 1937 | | |
| Hemiaulus hauckii Grunow in Van Heurck, 1882 | | |
| Herdmania litoralis Dodge, 1981 emend. Hoppenrath, 2000 | | |
| Hermesinum adriaticum O.Zacharias, 1906 | | |
| Heterocapsa rotundata (Lohmann, 1908) G. Hansen, 1995 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | | |
| Heterosigma akashiwo (Y. Hada, 1967) Y. Hada ex Y. Hara & M. Chihara, 1987 | | |
| Hillea fusiformis (Schiller) Schiller, 1925 | | |
| Katodinium fungiforme (Anisimova) Loeblich III, 1965 | | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Lessardia elongata Saldarriaga & F.J.R.Taylor, 2003 | | |
| Leucocryptos marina (Braarud) Butcher, 1967 | | |
| Licmophora ehrenbergii (Kützing) Grunow, 1867 | | |
| Licmophora gracilis (Ehrenberg) Grunow, 1867 | | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | | |
| Lioloma elongatum (Grunow) Hasle in Hasle & Syvertsen 1997 | | |
| Lioloma pacificum (Cupp) Hasle, 1996 | | |
| Lyngbya aestuarii (Mertens) Liebman ex Gomont, 1892 | | |
| Lyrella lyra (Ehrenb.) Karayeva, 1978 | | |
| Melosira moniliformis (O.F. Müller) C. Agardh, 1824 | | |
| Melosira nummuloides C.A. Agardh, 1824 emend. Crawford, 1975 | | |
| Merismopedia elegans A. Braun in Kützing, 1849 | | |
| Merismopedia glauca (Ehrenberg) Kützing, 1845 | | |
| Merismopedia tenuissima Lemmermann, 1898 | | |
| Micracanthodinium setiferum (Lohmann 1902) Deflandre, 1937 | | |
| Microcystis aeruginosa (Kützing) Kützing, 1846 | | |
| Micromonas pusilla (Butcher) Manton & Parke | | |
| Monoraphidium arcuatum (Korshikov) Hindák, 1970 | | |
| Monoraphidium contortum (Thuret) Komàrková-Legnerová, 1969 | | |
| Monoraphidium convolutum (Corda) Komárková-Legnerová | | |
| Monosiga brevicollis Ruinen, 1938 | | |
| Navicula cancellata Donkin, 1872 | | |
| Navicula directa (W. Smith) Ralfs in Pritchard, 1861 | | |
| Navicula distans (W. Smith) Ralfs, 1861 | | |
| Navicula forcipata Greville, 1859 | | |
| Navicula gregaria Donkin, 1861 | ''Navicula cryptocephala''; | |
| Navicula pennata A. Schmidt, 1876 | | |
| Navicula rhynchocephala Kützing, 1844 | | |
| Navicula transitans var. derasa (Grunow in Cleve & Grunow) P.T. Cleve, 1883 | | |
| Neoceratium divaricatum (Lemmermann) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium divaricatum''; | |
| Neoceratium furca (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium furca''; | |
| Neoceratium furca var. berghii (Jørg.) Krachmalny, 2011 | ''Ceratium furca var. berghii''; | |
| Neoceratium furca var. eugrammum (Ehrenb.) Krachmalny, 2011 | ''Ceratium furca var. eugrammum''; | |
| Neoceratium fusus (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium fusus''; | |
| Neoceratium lineatum (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium lineatum''; | |
| Neoceratium longipes (Bailey) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium longipes''; | |
| Neoceratium pulchellum (Schröder) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium pulchellum''; | |
| Neoceratium tripos (O.F.Müller) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium tripos''; | |
| Nitzschia holsatica Hust | | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Nitzschia obtusa W. Smith, 1853 | | |
| Nitzschia tenuirostris Mer. | | |
| Nodularia spumigena Mertens in Jürgens, 1822 | | |
| Oblea rotunda (Lebour, 1922) Balech, 1964 ex Sournia, 1973 | | |
| Octactis octonaria (Ehrenberg) Hovasse, 1946 | | |
| Oltmannsiella lineata Zimmermann 1930 | | |
| Oocystis solitaria Wittrock in Wittrock & Nordstedt, 1879 | | |
| Oscillatoria angusta Koppe 1924 | | |
| Oscillatoria princeps Vaucher ex Gomont, 1892 | | |
| Oxyphysis oxytoxoides Kofoid, 1926 | | |
| Oxyrrhis marina Dujardin, 1841 | | |
| Palusphaera vandeli Lecal, 1967 | ''Rhabdosphaera longistylis''; | |
| Paralia sulcata (Ehrenberg) P.T. Cleve, 1873 | | |
| Parapedinella reticulata Pedersen & Thomsen, 1986 | | |
| Parvicorbicula socialis (Meunier, 1910) Deflandre, 1960 | | |
| Pediastrum boryanum (Turpin) Meneghini, 1840 | | |
| Pediastrum duplex Meyen, 1829 | | |
| Peridiniella danica (Paulsen, 1907) Okolodkov et Dogde, 1995 | ''Glenodinium danicum''; | |
| Peridinium aciculiferum Lemmermann, 1900 | | |
| Peridinium cinctum (O.F.Müller) Ehrenberg | | |
| Peridinium quinquecorne Abé, 1927 | | |
| Peridinium umbonatum F. Stein, 1883 | | |
| Petrodictyon gemma (Ehrenberg) D.G. Mann in Round et al., 1990 | | |
| Phaeocystis pouchetii (M.P. Hariot, 1892) G. Lagerheim, 1896 | | |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | ''Dinophysis rotundata''; | |
| Pheopolykrikos hartmannii (Zimmermann, 1930) Matsuoka et Fukuyo, 1986 | | |
| Phormidium limosum (Dillwyn) P.C. Silva, 1996 | | |
| Plagioselmis nannoplanctica (H. Skuja) G. Novarino, I.A.N. Lucas & S. Morrall, 1994 | ''Rhodomonas minuta''; | |
| Planktoniella sol | | |
| Pleurosigma elongatum W. Smith, 1852 | | |
| Pleurosigma rigidum Smith, 1853 | | |
| Polykrikos kofoidii Chatton, 1914 | | |
| Pontosphaera borealis Ostenfeld | | |
| Pontosphaera nigra Schiller | | |
| Poropila dubia Schiller, 1925 | | |
| Porosira glacialis (Grunow) E. Jørgensen, 1905 | | |
| Preperidinium meunierii (Pavillard, 1907) Elbrächter, 1993 | | |
| Proboscia alata (Brightwell) Sundström, 1986 | | |
| Pronoctiluca pelagica Fabre-Domerque, 188 | | |
| Pronoctiluca spinifera (Lohmann, 1920) Schiller, 1933 | | |
| Prorocentrum balticum (Lohmann, 1908) Loeblich, 1970 | | |
| Prorocentrum compressum (Bailey, 1850) Abé ex Dodge, 1975 | | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | ''Prorocentrum minimum''; | |
| Prorocentrum gracile Schütt, 1895 | | |
| Prorocentrum lima (Ehrenberg, 1860) Stein, 1975 | | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Prorocentrum obtusum Ostenfeld, 1908 | | |
| Prorocentrum triestinum Schiller, 1918 | | |
| Protoceratium reticulatum (Claparède et Lachmann, 1859) Bütschli, 1885 | | |
| Protoperidinium achromaticum (Levander, 1902) Balech, 1974 | | |
| Protoperidinium bipes (Paulsen, 1904) Balech, 1974 | | |
| Protoperidinium breve Paulsen, 1907 | | |
| Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 | | |
| Protoperidinium brochii (Kofoid & Swezy) Balech | | |
| Protoperidinium claudicans (Paulsen, 1907) Balech, 1974 | | |
| Protoperidinium conicoides (Paulsen, 1905) Balech, 1973 | | |
| Protoperidinium conicum (Gran, 1900) Balech, 1974 | | |
| Protoperidinium crassipes (Kofoid, 1907) Balech, 1974 | | |
| Protoperidinium depressum (Bailey, 1850) Balech, 1974 | | |
| Protoperidinium divergens (Ehrenberg, 1841) Balech, 1974 | | |
| Protoperidinium excentricum (Paulsen, 1907) Balech, 1974 | | |
| Protoperidinium globulus (Stein, 1883) Balech, 1974 | | |
| Protoperidinium granii (Ostenfield, 1906) Balech, 1974 | | |
| Protoperidinium knipowitschii (Usachev) Balech 1974 | | |
| Protoperidinium leonis (Pavillard, 1916) Balech, 1974 | | |
| Protoperidinium oceanicum (VanHöffen, 1897) Balech, 1974 | | |
| Protoperidinium pallidum (Ostenfeld, 1899) Balech, 1973 | | |
| Protoperidinium pedunculatum (Schütt) Balech, 1895 | | |
| Protoperidinium pellucidum Bergh, 1882 | | |
| Protoperidinium pentagonum (Gran, 1902) Balech, 1974 | | |
| Protoperidinium pyriforme (Paulsen, 1907) Balech, 1974 | | |
| Protoperidinium quarnerense (Schröder, 1900) Balech, 1974 | | |
| Protoperidinium solidicorne (Mangin, 1922) Balech, 1974 | | |
| Protoperidinium steinii (Jörgensen, 1899) Balech, 1974 | | |
| Protoperidinium subinerme (Paulsen, 1904) Loeblich III, 1970 | | |
| Prymnesium parvum N. Carter, 1937 | | |
| Pseudo-nitzschia delicatissima (P.T. Cleve, 1897) Heiden, 1928 | | |
| Pseudo-nitzschia pungens (Grunow ex P.T. Cleve, 1897) Hasle, 1993 | | |
| Pseudo-nitzschia seriata (P.T. Cleve, 1883) H. & M. Peragallo, 1900 | | |
| Pseudopedinella pyriformis N. Carter, 1937 | also ''Pseudopedinella variabilis''; | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | | |
| Pterosperma cristatum Schiller, 1925 | | |
| Pterosperma jorgensii Shiller | | |
| Ptychodiscus noctiluca Stein, 1883 | | |
| Pyrophacus horologicum Stein, 1883 | | |
| Pyrophacus steinii (Schiller, 1935) Wall & Dale, 1971 | | |
| Rebecca salina (N.Carter) J.C.Green in Edvardsen et al., 2000 | ''Nephrochloris salina''; | |
| Rhabdosphaera claviger Murray & Blackman, 1898 | | |
| Rhizosolenia setigera Brightwell, 1858 | | |
| Rhizosolenia styliformis Brightwell, 1858 | | |
| Rhodomonas lens Pascher & Ruttner, 1913 | | |
| Rhodomonas marina (Dangeard) Lemmermann, 1899 | | |
| Scenedesmus acuminatus (Lagerheim) Chodat, 1902 | | |
| Scenedesmus armatus (R. Chodat) R. Chodat, 1913 | | |
| Scenedesmus communis E.H. Hegewald, 1977 | | |
| Scenedesmus obliquus (Turpin) Kützing, 1833 | | |
| Schroederia setigera (Schröder) Lemmermann, 1898 | | |
| Scrippsiella trochoidea (Stein, 1883) Balech ex Loeblich III, 1965 | | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Spatulodinium pseudonoctiluca (Pouchet, 1885) J. Cachon & Cachon ex Loeblich & Loeblich III, 1969 | | |
| Spirulina major Kützing ex Gomont, 1892 | | |
| Spirulina tenuissima Kutzing | | |
| Staurastrum furcatum Brébisson 1856 | | |
| Stephanodiscus hantzschii Grunow in P.T. Cleve & Grunow, 1880 | | |
| Stephanoeca diplocostata Ellis, 1930 | | |
| Striatella delicatula (Kützing) Grunow ex Van Heurck, 1881 | | |
| Striatella unipunctata (Lyngb.) Ag. | | |
| Surirella fastuosa (Ehrenberg) Kützing, 1844 | | |
| Synechococcus elongatus (Nägeli) Nägeli 1849 | | |
| Synedra goulardi Brébisson | | |
| Synedra parva Kützing | | |
| Syracosphaera histrica Kamptner, 1941 | | |
| Tabularia fasciculata (C. Agardh) D.M. Williams & Round, 1986 | | |
| Tetraedron trilobatum (Reinsch) Hansgirg 1889 | | |
| Tetraselmis cordiformis (N. Carter) S.F.N. Stein, 1878 | ''Carteria cordiformis''; | |
| Thalassionema frauenfeldii (Grunow) Hallegraeff, 1986 | | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira angulata (Gregory) Hasle, 1978 | | |
| Thalassiosira anguste-lineata (A. Schmidt) Fryxell et Hasle, 1977 | | |
| Thalassiosira antarctica Comber, 1896 | | |
| Thalassiosira baltica (Grunow in P.T. Cleve & Grunow) Ostenfeld, 1901 | | |
| Thalassiosira eccentrica (Ehrenberg) P.T. Cleve, 1903-1904 | | |
| Thalassiosira nordenskioeldii P.T. Cleve, 1873 | | |
| Thalassiosira parva Proshk.-Lavr., 1955 | | |
| Thalassiosira pseudonana Hasle & Heimdal, 1970 | | |
| Thalassiosira rotula Meunier, 1910 | | |
| Thalassiosira subtilis (Ostenfeld) Gran, 1900 | | |
| Thalassiothrix antarctica | | |
| Thalassiothrix longissima P.T. Cleve & Grunow, 1880 | | |
| Torodinium robustum Kofoid & Swezy, 1921 | | |
| Trachyneis aspera (Ehrenberg) Cleve | | |
| Trochiscia aciculifera (Lagerheim) Hansgirg 1888 | | |
| Trochiscia granulata (Reinsch) Hansgirg, 1888 | | |
| Tryblionella acuminata W. Smith, 1853 | | |
| Ulnaria acus (Kütz.) Aboal, 2003 | | |
| Ulnaria ulna (Nitzsch) P. Compère in Jahn et al., 2001 | | |
| Warnowia maculata (Kofoid et Swezy, 1921) Lindemann, 1928 | | |