| Species | as Species | Doubtful |
|---|
Connected successfully| Achnanthes brevipes C.A. Agardh, 1824 | | |
| Achnanthes brevipes var. intermedia (Kützing) P.T. Cleve, 1895 | ''Achnanthes subsessilis''; | |
| Achnanthes longipes Agardh, 1824 | | |
| Actinocyclus octonarius Ehrenberg, 1838 | ''Actinocyclus ehrenbergii''; | |
| Actinocyclus octonarius var. crassus (W. Smith) Hendey, 1954 | ''Actinocyclus crassus''; | |
| Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985 | ''Goniodoma ostenfeldii''; | |
| Amphidinium aculeatum Schröder | | |
| Amphidinium operculatum Claparède & Lachmann, 1859 | | |
| Amphidinium ovum Herdman, 1924 | | |
| Amphora angusta Gregory, 1857 | | |
| Amphora costata W. Smith, 1853 | | |
| Amphora hyalina Kützing, 1844 | | |
| Amphora marina W. Smith 1857 | | |
| Amphora ostrearia Brébisson, 1849 | | |
| Amphora ovalis (Kützing) Kützing, 1844 | | |
| Amylax triacantha (Jörgensen, 1899) Sournia, 1984 | ''Gonyaulax triacantha''; | |
| Anacanthoica acanthos (Schiller) Deflandre, 1952 | ''Acanthoica acanthos''; | |
| Aphanizomenon flos-aquae (Linnaeus) Ralfs ex Bornet & Flahault, 1888 | | |
| Ardissonea crystallina (C.A. Agardh) Grunow in Cleve & Grunow, 1880 | ''Synedra crystallina''; | |
| Ardissonea fulgens (Greville) Grunow in Cleve & Grunow, 1880 | ''Synedra fulgens''; | |
| Ardissonea robusta (Ralfs ex Pritchard) De Notaris | ''Synedra robusta''; | |
| Asterionella gracillima (Hantzsch) Heiberg, 1863 | | |
| Asteromphalus flabellatus (Brébisson) Greville, 1859 | | |
| Asteromphalus heptactis (Brébisson) Ralfs, 1861 | | |
| Asteromphalus robustus Castracane, 1875 | | |
| Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 | ''Bacillaria paradoxa''; | |
| Bacteriastrum hyalinum Lauder, 1864 | | |
| Biremis ambigua (Cleve) D.G.Mann, 1990 | ''Navicula retusa''; | |
| Calyptrosphaera incisa Schill. | | |
| Calyptrosphaera oblonga Lohman, 1902 | | |
| Campylodiscus fastuosus Ehrenberg, 1845 | ''Campylodiscus parvulus'' and ''Campylodiscus thuretii''; | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | ''Cerataulina bergonii''; | |
| Cerataulina velifera Mereschkowsky | | |
| Ceratium hirundinella (O.F. Müller) Dujardin, 1841 | | |
| Chaetoceros affinis Lauder, 1864 | also ''Chaetoceros angulatus''; | |
| Chaetoceros borealis J.W. Bailey, 1854 | | |
| Chaetoceros brevisetus Axent. | | |
| Chaetoceros ceratosporus Ostenfeld, 1910 | | |
| Chaetoceros compressus Lauder, 1864 | also ''Chaetoceros contortus''; | |
| Chaetoceros convolutus Castracane, 1886 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros danicus P.T.Cleve, 1889 | | |
| Chaetoceros debilis P.T. Cleve, 1894 | | |
| Chaetoceros decipiens P.T. Cleve, 1873 | | |
| Chaetoceros densus P.T. Cleve, 1901 | | |
| Chaetoceros diadema (Ehrenberg) Gran, 1897 | ''Chaetoceros subsecundus''; | |
| Chaetoceros diversus Cleve, 1873 | | |
| Chaetoceros holsaticus Schütt, 1895 | | |
| Chaetoceros knipowitschii A. Henckel | | |
| Chaetoceros laciniosus Schütt, 1895 | | |
| Chaetoceros lauderi Ralfs in Lauder, 1864 | | |
| Chaetoceros mitra (J.W. Bailey) P.T. Cleve, 1896 | | |
| Chaetoceros neogracilis VanLand., 1968 | ''Chaetoceros gracilis''; | |
| Chaetoceros odessanus Axentjev | | |
| Chaetoceros peruvianus Brightw. | | |
| Chaetoceros pseudocrinitus Ostenfeld, 1901 | | |
| Chaetoceros similis P.T. Cleve, 1896 | | |
| Chaetoceros simplex Ostenfeld, 1901 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chaetoceros socialis f. radians (F. Schütt) A.I. Proshkina-Lavrenko, 1963 | ''Chaetoceros radians''; | |
| Chaetoceros subtilis (Proschkina-Lavrenko) Proschkina-Lavrenko, 1961 | | |
| Chaetoceros wighamii Brightwell, 1856 | | |
| Chaetoceros willei Grunow, 1897 | | |
| Cocconeis placentula Ehrenberg, 1838 | | |
| Cocconeis scutellum (Grunow in Van Heurck) P.T. Cleve, 1896 | | |
| Cochlodinium archimedes (Pouchet, 1883) Lemmermann, 1899 | | |
| Cochlodinium citron Kofoid & Swezy, 1921 | | |
| Cochlodinium pirum (Schütt, 1895) Lemmermann, 1899 | ''Gymnodinium pirum''; | |
| Coscinodiscus biconicus Van Breemen | | |
| Coscinodiscus centralis Ehrenberg, 1844 | | |
| Coscinodiscus concinnus W. Smith, 1856 | | |
| Coscinodiscus gigas Ehrenb. 1841 | | |
| Coscinodiscus granii Gough, 1905 | | |
| Coscinodiscus marginatus Ehrenberg, 1841 (1843, 1844) | | |
| Coscinodiscus nitidus W. Gregory, 1857 | | |
| Coscinodiscus oculus-iridis (Ehrenberg) Ehrenberg, 1854 | | |
| Coscinodiscus perforatus (Forti) Hust., 1928 | | |
| Coscinodiscus radiatus Ehrenberg, 1841 | | |
| Ctenophora pulchella (Ralfs ex Kützing) Williams & Round, 1986 | ''Synedra pulchella''; | |
| Cyclotella caspia Grunow, 1878 | | |
| Cyclotella choctawhatcheeana Prasad, 1990 | ''Thalassiosira nana''; | |
| Cyclotella kuetzingiana Thwaites, 1848 | | |
| Cylindrotheca closterium (Ehrenberg) Reiman & Lewin, 1964 | ''Nitzschiella tenuirostris''; | |
| Cymatopleura elliptica (Brébisson ex Kützing) W. Smith, 1851 | | |
| Cymatopleura solea (Brébisson) W. Smith, 1851 | | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | ''Rhizosolenia fragillissima''; | |
| Dinophysis acuminata Claparède & Lachmann, 1859 | | |
| Dinophysis acuta Ehrenberg, 1841 | | |
| Dinophysis arctica Mereschkowsky, 1879 | | |
| Dinophysis caudata Saville-Kent, 1881 | | |
| Dinophysis fortii Pavillard, 1923 | | |
| Dinophysis hastata Stein, 1883 | | |
| Dinophysis ovata Claparède & Lachmann | | |
| Dinophysis ovum Schütt, 1895 | | |
| Dinophysis pulchella (Lebour) Balech | ''Phalacroma pulchellum''; | |
| Dinophysis sacculus Stein, 1883 | | |
| Dinophysis tripos Gourret, 1883 | | |
| Diploneis elliptica (Kützing) P.T. Cleve, 1894 | ''Navicula elliptica''; | |
| Diplopsalis lenticula Bergh, 1881 | ''Glenodinium lenticula''; | |
| Diplopsalopsis orbicularis (Paulsen, 1907) Meunier, 1910 | ''Peridinium orbiculare''; | |
| Distephanus speculum (Ehrenberg) Haeckel, 1887 | | |
| Ditylum brightwellii (T. West) Grunow in Van Heurck, 1883 | | |
| Ebria tripartita (Shumann) Lemmermann, 1899 | | |
| Emiliania huxleyi (Lohmann) Hay & Mohler, 1967 | | |
| Endictya oceanica Ehrenberg, 1845 | | |
| Entomoneis alata (Ehrenberg) Ehrenberg, 1845 | ''Amphiprora alata''; | |
| Entomoneis paludosa (W. Smith) Reimer, 1975 | ''Amphiprora paludosa''; | |
| Epithemia adnata (Kützing) Brébisson, 1838 | ''Epithemia zebra''; | |
| Glenodiniopsis steinii (Lemmermann) Woloszynska, 1916 | ''Glenodinium cinctum''; | |
| Glenodinium obliquum Pouchet | | |
| Glenodinium paululum Lindemann | | |
| Glenodinium pilula (Ostenfeld) Schiller | | |
| Glenodinium pulvisculus (Ehrenberg) Stein | | |
| Goniodoma acuminatum (Ehrenberg, 1838) Stein, 1883 | | |
| Goniodoma polyedricum (Pouchet, 1883) Jørgensen, 1899 | | |
| Gonyaulax diegensis Kofoid, 1911 | | |
| Gonyaulax digitale (Pouchet, 1883) Kofoid, 1911 | | |
| Gonyaulax minima Matzenauer, 1933 | | |
| Gonyaulax polygramma Stein, 1883 | | |
| Gonyaulax scrippsae Kofoid, 1911 | | |
| Gonyaulax spinifera (Claparède & Lachmann, 1859) Diesing, 1866 | also ''Peridinium spiniferum''; | |
| Grammatophora angulosa Ehrenberg, 1841 | | |
| Grammatophora marina (Lyngbye) Kützing, 1844 | | |
| Guinardia delicatula (Cleve) G.R. Hasle, 1996 | ''Rhizosolenia delicatula''; | |
| Gymnodinium agile Kofoid et Swezy | | |
| Gymnodinium agiliforme Schiller, 1928 | | |
| Gymnodinium helveticum Penard 1891 | ''Glenodinium apiculatum''; | |
| Gymnodinium najadeum Schiller, 1928 | | |
| Gymnodinium neapolitanum Schiller, 1928 | | |
| Gymnodinium rhomboides Schütt, 1895 | | |
| Gyrodinium fissum (Levander, 1894) Kofoid & Swezy, 1921 | ''Gymnodinium fissum''; | |
| Gyrodinium spirale (Bergh, 1881) Kofoid et Swezy, 1921 | also ''Spirodinium spirale''; | |
| Gyrosigma balticum (Ehrenberg) Rabenhorst | ''Pleurosigma balticum''; | |
| Gyrosigma spectabile (Grunow) Cleve | ''Nitzschia spectabilis''; | |
| Gyrosigma tenuissimum (W. Smith) Griffith & Henfrey, 1856 | ''Pleurosigma tenuissimum''; | |
| Halosphaera viridis Schmitz | | |
| Hemiaulus hauckii Grunow in Van Heurck, 1882 | | |
| Hermesinum adriaticum O.Zacharias, 1906 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | ''Peridinium triquetrum''; | |
| Hyalodiscus laevis Ehrenb., 1845 | | |
| Hypnodinium sphaericum Klebs, 1912 | | |
| Kryptoperidinium foliaceum (Stein, 1883) Lindemann, 1924 | ''Glenodinium foliaceum''; | |
| Leptocylindrus adriaticus Schroder | | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Licmophora abbreviata C.A. Agardh, 1831 | | |
| Licmophora ehrenbergii (Kützing) Grunow, 1867 | | |
| Licmophora flabellata C. Agardh, 1830 | | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | ''Gonyaulax polyedra''; | |
| Lohmannosphaera subclausa Gran et Braarud | | |
| Lyngbya semiplena (C. Agardh) J. Agardh, 1842 | | |
| Lyrella lyra (Ehrenb.) Karayeva, 1978 | ''Navicula lyra''; | |
| Melosira dubia C.G. Kützing, 1844 | | |
| Melosira lineata (Dillwyn) C.A. Agardh, 1824 | ''Melosira juergensi''; | |
| Melosira moniliformis (O.F. Müller) C. Agardh, 1824 | | |
| Melosira nummuloides C.A. Agardh, 1824 emend. Crawford, 1975 | | |
| Meridion circulare (Greville) C. Agardh, 1831 | | |
| Merismopedia tenuissima Lemmermann, 1898 | | |
| Mesoporos perforatus (Gran) Lillick 1937 | ''Exuviaella perforata''; | |
| Microcystis aeruginosa (Kützing) Kützing, 1846 | | |
| Microcystis ichthyoblabe Kützing, 1843 | | |
| Navicula cancellata Donkin, 1872 | | |
| Navicula digitoradiata (Gregory) Ralfs in Pritchard, 1861 | | |
| Navicula directa (W. Smith) Ralfs in Pritchard, 1861 | ''Pinnularia directa''; | |
| Navicula rhynchocephala Kützing, 1844 | | |
| Neoceratium extensum (Gourret) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium extensum''; | |
| Neoceratium furca (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium furca''; | |
| Neoceratium fusus (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium fusus''; | |
| Neoceratium tripos (O.F.Müller) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium tripos''; | |
| Nitzschia closterium (Ehrenberg) W. Smith, 1853 | | |
| Nitzschia constricta (Gregory) Grunow in Cleve & Grunow, 1880 | | |
| Nitzschia dissipata (Kützing) Grunow, 1862 | | |
| Nitzschia insignis | | |
| Nitzschia lanceolata W. Smith | | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Nitzschia lorenziana Grunow in Cleve & Grunow, 1880 | ''Nitzschiella lorenciana''; | |
| Nitzschia sigma (Kützing) W. Smith, 1853 | | |
| Noctiluca scintillans (Macartney, 1810) Kofoid, 1920 | ''Noctiluca miliaris''; | |
| Nodularia spumigena Mertens in Jürgens, 1822 | | |
| Oblea rotunda (Lebour, 1922) Balech, 1964 ex Sournia, 1973 | ''Glenodinium rotundum''; | |
| Odontella mobiliensis (J.W. Bailey) Grunow, 1884 | ''Biddulphia mobiliensis''; | |
| Opisthoaulax vorticella (F. Stein) Calado, 2011 | ''Gymnodinium vorticella''; | |
| Oscillatoria bonnemaisonii Crouan in Desmazières ex Gomont, 1892 | | |
| Paralia sulcata (Ehrenberg) P.T. Cleve, 1873 | ''Melosira sulcata''; | |
| Pediastrum boryanum (Turpin) Meneghini, 1840 | | |
| Pediastrum duplex Meyen, 1829 | | |
| Peridiniella danica (Paulsen, 1907) Okolodkov et Dogde, 1995 | ''Glenodinium danicum''; | |
| Peridinium bipes Stein | ''Peridinium tabulatum''; | |
| Peridinium willei Huitfeld-Kaas | | |
| Petrodictyon gemma (Ehrenberg) D.G. Mann in Round et al., 1990 | ''Surirella gemma''; | |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | also ''Dinophysis rotundata'' and ''Phalacroma rudgei''; | |
| Phalacroma sphaeroideum Schiller, 1928 | | |
| Phormidium nigroviride (Thwaites ex Gomont) Anagnostidis & Komárek, 1988 | | |
| Pleurosigma angulatum (Quekett, 1848) Wm. Smith, 1853 | | |
| Pleurosigma elongatum W. Smith, 1852 | | |
| Pleurosigma formosum Wm. Smith | | |
| Pleurosigma normanii Ralfs in Pritchard. | | |
| Pleurosira laevis (Ehrenberg) Compère, 1982 | ''Biddulphia laevis''; | |
| Pontosphaera bigelowi Gran & Braarud 1935 | | |
| Pontosphaera haeckelii Lohmann | | |
| Pontosphaera hartmanni Schiller | | |
| Porosira glacialis (Grunow) E. Jørgensen, 1905 | | |
| Proboscia alata (Brightwell) Sundström, 1986 | ''Rhizosolenia alata''; | |
| Prorocentrum balticum (Lohmann, 1908) Loeblich, 1970 | ''Exuviaella baltica''; | |
| Prorocentrum compressum (Bailey, 1850) Abé ex Dodge, 1975 | ''Exuviaella compressa''; | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | ''Exuviaella cordata''; | |
| Prorocentrum lima (Ehrenberg, 1860) Stein, 1975 | ''Exuviaella marina''; | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Prorocentrum nanum Schiller, 1918 | ''Exuviaella pusilla''; | |
| Prorocentrum scutellum Schröder, 1900 | | |
| Protoceratium reticulatum (Claparède et Lachmann, 1859) Bütschli, 1885 | | |
| Protoperidinium achromaticum (Levander, 1902) Balech, 1974 | ''Peridinium achromaticum''; | |
| Protoperidinium bipes (Paulsen, 1904) Balech, 1974 | ''Peridinium minusculum''; | |
| Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 | ''Peridinium brevipes''; | |
| Protoperidinium brochii (Kofoid & Swezy) Balech | ''Peridinium brochii''; | |
| Protoperidinium conicoides (Paulsen, 1905) Balech, 1973 | ''Peridinium conicoides''; | |
| Protoperidinium conicum (Gran, 1900) Balech, 1974 | ''Peridinium conicum''; | |
| Protoperidinium crassipes (Kofoid, 1907) Balech, 1974 | ''Peridinium crassipes''; | |
| Protoperidinium decipiens (Jørgensen, 1899) Parke et Dodge, 1976 | ''Peridinium decipiens''; | |
| Protoperidinium depressum (Bailey, 1850) Balech, 1974 | ''Peridinium depressum''; | |
| Protoperidinium diabolum (Cleve) Balech, 1974 | ''Peridinium diabolus''; | |
| Protoperidinium divergens (Ehrenberg, 1841) Balech, 1974 | ''Peridinium divergens''; | |
| Protoperidinium excentricum (Paulsen, 1907) Balech, 1974 | ''Peridinium excentricum''; | |
| Protoperidinium globulus (Stein, 1883) Balech, 1974 | ''Peridinium globulus''; | |
| Protoperidinium granii (Ostenfield, 1906) Balech, 1974 | ''Peridinium granii''; | |
| Protoperidinium oceanicum (VanHöffen, 1897) Balech, 1974 | ''Peridinium oceanicum''; | |
| Protoperidinium pallidum (Ostenfeld, 1899) Balech, 1973 | ''Peridinium pallidum''; | |
| Protoperidinium pedunculatum (Schütt) Balech, 1895 | ''Peridinium pedunculatum''; | |
| Protoperidinium pellucidum Bergh, 1882 | ''Peridinium pellucidum''; | |
| Protoperidinium pentagonum (Gran, 1902) Balech, 1974 | ''Peridinium pentagonum''; | |
| Protoperidinium solidicorne (Mangin, 1922) Balech, 1974 | ''Peridinium solidicorne''; | |
| Protoperidinium steinii (Jörgensen, 1899) Balech, 1974 | ''Peridinium steinii'' and ''Peridinium michaelis''; | |
| Protoperidinium subinerme (Paulsen, 1904) Loeblich III, 1970 | ''Peridinium subinerme''; | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | ''Rhizosolenia calcar-avis''; | |
| Pyrocystis lunula (Schütt) Schütt, 1896 | ''Diplodinium lunula''; | |
| Pyrophacus horologicum Stein, 1883 | | |
| Rafidium fasciculatum Kg. | | |
| Rhabdonema adriaticum Kützing, 1844 | | |
| Rhabdosphaera claviger Murray & Blackman, 1898 | | |
| Rhoicosphenia abbreviata (C.A. Agardh) Lange-Bertalot, 1980 | ''Rhoicosphenia curvata''; | |
| Richelia intracellularis J. Schmidt, 1901 | | |
| Scenedesmus acuminatus (Lagerheim) Chodat, 1902 | | |
| Scenedesmus communis E.H. Hegewald, 1977 | | |
| Scrippsiella trochoidea (Stein, 1883) Balech ex Loeblich III, 1965 | ''Glenodinium trochoideum''; | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Spirulina subsalsa Örstedt ex Gomont 1892 | | |
| Stauronella constricta (Ehrenberg) K.S.Mereschkowsky | | |
| Stephanodiscus hantzschii Grunow in P.T. Cleve & Grunow, 1880 | | |
| Striatella unipunctata (Lyngb.) Ag. | | |
| Surirella fastuosa (Ehrenberg) Kützing, 1844 | | |
| Surirella ovalis Brébisson, 1838 | | |
| Surirella spiralis Kützing, 1844 | | |
| Surirella striatula Turpin, 1828 | | |
| Synedra affinis Kützing, 1844 | | |
| Synedra brockmanii Hust. | | |
| Syracosphaera cordiformis Schiller, 1913 | | |
| Syracosphaera dentata Lohmann | | |
| Tabularia fasciculata (C. Agardh) D.M. Williams & Round, 1986 | ''Synedra tabulata''; | |
| Thalassionema frauenfeldii (Grunow) Hallegraeff, 1986 | ''Thalassiothrix frauenfeldii''; | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira angulata (Gregory) Hasle, 1978 | ''Thalassiosira decipiens''; | |
| Thalassiosira eccentrica (Ehrenberg) P.T. Cleve, 1903-1904 | ''Coscinodiscus excentricus''; | |
| Thalassiosira gravida P.T. Cleve, 1896 | | |
| Thalassiosira oestrupii (Ostenfeld) Hasle | ''Coscinosira oestrupii''; | |
| Toxarium hennedyanum (Gregory) Pelletan, 1889 | ''Synedra hennedyana''; | |
| Toxarium undulatum J.W. Bailey, 1854 | ''Synedra undulata''; | |
| Trachyneis aspera (Ehrenberg) Cleve | ''Stauroneis aspera''; | |
| Treubaria schmidlei (Schröder) Fott & Kovácik | | |
| Triceratium antediluvianum (Ehrenberg) Grunow in Hustedt, 1927 | | |
| Trochiscia brachiolata (Möbius) Lemmermann | | |
| Tryblionella apiculata Gregory, 1857 | ''Nitzschia apiculata''; | |
| Tryblionella compressa (J.W. Bailey) M. Poulin in Poulin et al., 1990 | ''Nitzschia punctata''; | |
| Tryblionella gracilis W. Smith, 1853 | ''Nitzschia tryblionella''; | |