| Species | as Species | Doubtful |
|---|
Connected successfully| Achnanthes brevipes C.A. Agardh, 1824 | | |
| Achnanthes longipes Agardh, 1824 | | |
| Achradina pulchra Lohmann, 1902 | | |
| Akashiwo sanguinea (K.Hirasaka) G.Hansen & Ø.Moestrup | | |
| Alexandrium minutum Halim, 1960 | | |
| Alexandrium ostenfeldii (Paulsen) Balech & Tangen, 1985 | | |
| Amphidinium operculatum Claparède & Lachmann, 1859 | | |
| Amphidinium ovum Herdman, 1924 | | |
| Amphora hyalina Kützing, 1844 | | |
| Ankistrodesmus falcatus (Corda) Ralfs, 1848 | | |
| Aphanizomenon flos-aquae (Linnaeus) Ralfs ex Bornet & Flahault, 1888 | ''Anabaena flos-aquae''; | |
| Aphanocapsa planctonica (G.M.Smith) Komárek & Anagnostidis | ''Microcystis pulverea f. planctonica''; | |
| Archaeperidinium minutum (Kofoid) Jorgensen, 1912 | ''Protoperidinium minutum''; | |
| Ardissonea crystallina (C.A. Agardh) Grunow in Cleve & Grunow, 1880 | ''Synedra crystallina''; | |
| Asterionella formosa Hassall, 1850 | | |
| Aulacoseira granulata (Ehrenberg) Simonsen, 1979 | ''Melosira granulata''; | |
| Aulacoseira italica (Ehrenberg) Simonsen 1979 | ''Melosira italica''; | |
| Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 | ''Bacillaria paradoxa''; | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | | |
| Ceratium hirundinella (O.F. Müller) Dujardin, 1841 | | |
| Chaetoceros affinis Lauder, 1864 | | |
| Chaetoceros borgei Lemmermann, 1904 | | |
| Chaetoceros compressus Lauder, 1864 | | |
| Chaetoceros coronatus Gran, 1897 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros danicus P.T.Cleve, 1889 | | |
| Chaetoceros decipiens P.T. Cleve, 1873 | | |
| Chaetoceros densus P.T. Cleve, 1901 | | |
| Chaetoceros dubius Pr.-Lavrenko | | |
| Chaetoceros insignis Prosckina-Lavrenko | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros neogracilis VanLand., 1968 | ''Chaetoceros gracilis''; | |
| Chaetoceros rigidus Ostenfeld | | |
| Chaetoceros similis P.T. Cleve, 1896 | | |
| Chaetoceros simplex Ostenfeld, 1901 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chromulina ovalis G.A.Klebs | | |
| Chromulina stellata Pascher | | |
| Chroococcus dimidiatus (Kützing) Nägeli, 1849 | ''Gloeocapsa turgida''; | |
| Chroococcus minimus (von Keissler) Lemmermann, 1904 | ''Gloeocapsa minima''; | |
| Climaconeis inflexa (Brébisson ex Kützing) E.J.Cox, 1982 | ''Amphora inflexa''; | |
| Cochlodinium brandtii Wulff, 1916 | | |
| Cochlodinium geminatum (Schütt, 1895) Schütt, 1896 | also ''Gymnodinium geminatum''; | |
| Coscinodiscus gigas Ehrenb. 1841 | | |
| Coscinodiscus granii Gough, 1905 | | |
| Coscinodiscus jonesianus (Greville) Ostenfeld, 1915 | | |
| Coscinodiscus radiatus Ehrenberg, 1841 | | |
| Cosmarium conspersum var. rotundatum Wittrock | | |
| Crucigenia tetrapedia (Kirchner) W. & G.S. West, 1902 | | |
| Cyclotella caspia Grunow, 1878 | | |
| Cylindrotheca closterium (Ehrenberg) Reiman & Lewin, 1964 | | |
| Cymbella affinis Kützing, 1844 | | |
| Cymbella lanceolata (Ehrenberg) Kirchner, 1878 | | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | | |
| Detonula confervacea (P.T. Cleve) Gran, 1900 | | |
| Detonula pumila (Castracane) Gran, 1900 | | |
| Diatoma tenue C.A. Agardh, 1812 | ''Diatoma elongatum''; | |
| Dictyocha speculum Ehrenberg | | |
| Dinobryon balticum (Schütt) Lemmermann, 1900 | | |
| Dinobryon behningii D.O.Svirenko | | |
| Dinobryon divergens O.E. Imhof, 1887 | | |
| Dinophysis acuminata Claparède & Lachmann, 1859 | | |
| Dinophysis caudata Saville-Kent, 1881 | | |
| Dinophysis ovum Schütt, 1895 | | |
| Dinophysis sacculus Stein, 1883 | | |
| Dinophysis tripos Gourret, 1883 | | |
| Diplopsalis lenticula Bergh, 1881 | | |
| Ditylum brightwellii (T. West) Grunow in Van Heurck, 1883 | | |
| Euglena acusformis J. Schiller | | |
| Euglena viridis (O.F. Müller) Ehrenberg, 1832 | | |
| Fragilaria capucina Desmazières, 1825 | | |
| Fragilaria striatula Lyngbye, 1819 | | |
| Gomphonema olivaceum (Hornemann) Brébisson, 1838 | | |
| Goniodoma polyedricum (Pouchet, 1883) Jørgensen, 1899 | | |
| Gonyaulax apiculata (Pénard, 1891) Entz, 1904 | | |
| Gonyaulax cochlea Meunier, 1919 | | |
| Gonyaulax minima Matzenauer, 1933 | | |
| Gonyaulax polygramma Stein, 1883 | | |
| Gonyaulax scrippsae Kofoid, 1911 | | |
| Gonyaulax spinifera (Claparède & Lachmann, 1859) Diesing, 1866 | | |
| Grammatophora marina (Lyngbye) Kützing, 1844 | | |
| Grammatophora oceanica Ehrenberg, 1841 | | |
| Gymnodinium agiliforme Schiller, 1928 | | |
| Gymnodinium fusus Schütt, 1896 | | |
| Gymnodinium heterostriatum Kofoid & Swezy, 1921 | | |
| Gymnodinium lantzschii Utermöhl | ''Gymnodinium albulum''; | |
| Gymnodinium najadeum Schiller, 1928 | | |
| Gymnodinium simplex (Lohmann, 1911) Koifoid & Swezy, 1921 | | |
| Gymnodinium stellatum Hulbult, 1957 | | |
| Gymnodinium wulffii Schiller, 1933 | | |
| Gyrodinium estuariale Hulbert, 1957 | | Doubtful |
| Gyrodinium fissum (Levander, 1894) Kofoid & Swezy, 1921 | | |
| Gyrodinium pingue (Schütt, 1895) Kofoid et Swezy, 1921 | | |
| Gyrodinium spirale (Bergh, 1881) Kofoid et Swezy, 1921 | | |
| Hemiaulus hauckii Grunow in Van Heurck, 1882 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | | |
| Hillea fusiformis (Schiller) Schiller, 1925 | | |
| Hillea marina Butcher, 1952 | | |
| Hyalodiscus ambiguus (Grun.) Temp. Et Perag. 1890 | | |
| Hyalodiscus scoticus (Kützing) Grunow, 1879 | | |
| Hyaloraphidium contortum var. tenuissimum Korshikov | | |
| Karenia brevis (Davis, 1948) G. Hansen & Moestrup, 2000 | ''Gymnodinium breve''; | |
| Kirchneriella lunaris (Kirchner) K. Möbius, 1894 | | |
| Lepocinclis spirogyroides (Ehrenberg) Marin & Melkonian | ''Euglena spirogyra var. laticlavius''; | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Leptolyngbya fragilis (Gomont) Anagnostidis & Komárek 1988 | ''Phormidium fragile''; | |
| Licmophora ehrenbergii (Kützing) Grunow, 1867 | | |
| Licmophora gracilis (Ehrenberg) Grunow, 1867 | | |
| Limnothrix planctonica (Woloszynska) Meffert, 1988 | ''Oscillatoria planctonica''; | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | ''Gonyaulax polyedra''; | |
| Lioloma pacificum (Cupp) Hasle, 1996 | | |
| Lyngbya aestuarii (Mertens) Liebman ex Gomont, 1892 | | |
| Mastigocoleus testarum Lagerheim ex Bornet & Falhault, 1886 | | |
| Melosira interrupta K.E.Lohman & G.W.Andrews | | |
| 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 | | |
| Melosira octogona A. Schmidt, 1874 | | |
| Melosira undulata (Ehrenberg) Kützing, 1844 | | |
| Merismopedia glauca (Ehrenberg) Kützing, 1845 | | |
| Merismopedia punctata Meyen, 1939 | | |
| Merismopedia tenuissima Lemmermann, 1898 | | |
| Mesoporos perforatus (Gran) Lillick 1937 | | |
| Microcystis aeruginosa (Kützing) Kützing, 1846 | | |
| Monoraphidium arcuatum (Korshikov) Hindák, 1970 | | |
| Monoraphidium griffithii (Berkeley) Komárková-Legnerová, 1969 | ''Ankistrodesmus acicularis''; | |
| Monoraphidium obtusum Korshikov | ''Ankistrodesmus obtusus''; | |
| Navicula cancellata Donkin, 1872 | | |
| Navicula minima Grunow in Van Heurck, 1880 | | |
| Navicula pennata var. pontica Mer. | | |
| Navicula transitans var. derasa (Grunow in Cleve & Grunow) P.T. Cleve, 1883 | ''Navicula transitans var. derasa f. delicatula''; | |
| Neoceratium declinatum (Karsten) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium declinatum''; | |
| Neoceratium furca (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium furca''; | |
| Neoceratium furca var. eugrammum (Ehrenb.) Krachmalny, 2011 | ''Ceratium furca var. eugrammum''; | |
| Neoceratium lineatum (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium lineatum''; | |
| Neoceratium tripos (O.F.Müller) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium tripos''; | |
| Neoceratium tripos var. ponticum (Jørg.) Krachmalny, 2011 | ''Ceratium tripos var. ponticum''; | |
| Nitzschia holsatica Hust | | |
| Nitzschia incerta (Grunow) M.Peragallo 1903 | ''Nitzschia reversa''; | |
| Nitzschia linearis (C.A. Agardh) W. Smith, 1853 | | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Nitzschia palea (Kützing) W. Smith, 1856 | | |
| Nitzschia sigmoidea (Ehrenberg) W. Smith | | |
| Nitzschia vermicularis (Kützing) Hantzsch in Rabenhorst, 1860 (1859) | | |
| Noctiluca scintillans (Macartney, 1810) Kofoid, 1920 | | |
| Nodularia spumigena Mertens in Jürgens, 1822 | | |
| Oblea rotunda (Lebour, 1922) Balech, 1964 ex Sournia, 1973 | | |
| Ochromonas crenata Klebs, 1893 | | |
| Ochromonas minima Throndsen, 1969 | | |
| Ochromonas mutablis Klebs | | |
| Odontella aurita (Lyngbye) C. A. Agardh, 1832 | | |
| Odontella sinensis (Greville) Grunow, 1884 | | |
| Oocystis borgei J. Snow, 1903 | | |
| Oocystis lacustris Chodat, 1897 | | |
| Oocystis parva W. West & G.S. West, 1898 | | |
| Oocystis solitaria Wittrock in Wittrock & Nordstedt, 1879 | | |
| Oscillatoria margaritifera Kützing ex Gomont, 1892 | | |
| Oxyrrhis marina Dujardin, 1841 | | |
| Paralia sulcata (Ehrenberg) P.T. Cleve, 1873 | | |
| Pediastrum duplex Meyen, 1829 | | |
| Peridinium cinctum (O.F.Müller) Ehrenberg | | |
| Peridinium lomnickii Woloszynska, 1916 | | Doubtful |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | ''Dinophysis rudgei''; | |
| Phormidium hormoides Setchell & Gardner 1918 | | |
| Phormidium laetevirens (P.L. Crouan & H.M. Crouan ex Gomont) Anagnostidis & Komárek, 1988 | ''Oscillatoria laetevirens''; | |
| Phormidium limosum (Dillwyn) P.C. Silva, 1996 | ''Oscillatoria limosa''; | |
| Pleurosigma angulatum (Quekett, 1848) Wm. Smith, 1853 | | |
| Pleurosigma elongatum W. Smith, 1852 | | |
| Pleurosigma rigidum Smith, 1853 | | |
| Podolampas bipes Stein, 1883 | | Doubtful |
| Podolampas elegans Schütt, 1895 | | |
| Polykrikos kofoidii Chatton, 1914 | | |
| Porphyrosiphon luteus (Gomont) Anagnostidis & Komárek | ''Lyngbya lutea''; | |
| Proboscia alata (Brightwell) Sundström, 1986 | | |
| Prorocentrum compressum (Bailey, 1850) Abé ex Dodge, 1975 | | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | ''Prorocentrum minimum''; | |
| Prorocentrum dentatum Stein, 1883 | | |
| Prorocentrum gracile Schütt, 1895 | | |
| Prorocentrum lima (Ehrenberg, 1860) Stein, 1975 | ''Prorocentrum marinum''; | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Prorocentrum scutellum Schröder, 1900 | | |
| Prosoaulax lacustris (F.Stein) Calado & Moestrup, 2005 | ''Amphidinium lacustre''; | |
| Protoceratium reticulatum (Claparède et Lachmann, 1859) Bütschli, 1885 | | |
| Protoperidinium bipes (Paulsen, 1904) Balech, 1974 | | |
| Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 | | |
| Protoperidinium decipiens (Jørgensen, 1899) Parke et Dodge, 1976 | | |
| Protoperidinium divergens (Ehrenberg, 1841) Balech, 1974 | | |
| Protoperidinium elegans (Cleve, 1900) Balech, 1974 | | |
| Protoperidinium excentricum (Paulsen, 1907) Balech, 1974 | | |
| Protoperidinium granii (Ostenfield, 1906) Balech, 1974 | | |
| Protoperidinium oceanicum (VanHöffen, 1897) Balech, 1974 | | |
| Protoperidinium ovatum Pouchet, 1883 | ''Protoperidinium globulus var. ovatum''; | |
| Protoperidinium pellucidum Bergh, 1882 | | |
| Protoperidinium spiniferum (Schiller) Balech, 1974 | | |
| Protoperidinium steinii (Jörgensen, 1899) Balech, 1974 | | |
| Protoperidinium subinerme (Paulsen, 1904) Loeblich III, 1970 | | |
| Protoperidinium thorianum (Paulsen, 1905) Balech, 1974 | | |
| Pseudanabaena limnetica (Lemmermann) Komárek, 1974 | ''Oscillatoria limnetica''; | |
| Pseudo-nitzschia delicatissima (P.T. Cleve, 1897) Heiden, 1928 | | |
| Pseudo-nitzschia seriata (P.T. Cleve, 1883) H. & M. Peragallo, 1900 | | |
| Pseudokephyrion undulatum (G.A.Klebs) Pascher | | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | | |
| Rhaphoneis amphiceros (Ehrenberg) Ehrenberg, 1844 | | |
| Rhizosolenia setigera Brightwell, 1858 | | |
| Rhodomonas salina (Wislouch) Hill et Wetherbee | | |
| Rhopalodia musculus (Kützing) O.F. Müller, 1900 | | |
| Scenedesmus acuminatus (Lagerheim) Chodat, 1902 | | |
| Scenedesmus quadricauda (Turpin) Brébisson in Brébisson & Godey, 1835 | | |
| Scrippsiella trochoidea (Stein, 1883) Balech ex Loeblich III, 1965 | also ''Peridinium trochoideum''; | |
| Selenastrum gracile Reinsch, 1867 | ''Ankistrodesmus gracilis''; | |
| Skeletonema barbadense Greville, 1865 | | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Spirulina okensis (C.Meyer) Geitler | | |
| Staurastrum ophiura P.Lundell | | |
| Striatella delicatula (Kützing) Grunow ex Van Heurck, 1881 | | |
| Striatella unipunctata (Lyngb.) Ag. | | |
| Surirella capronii Brébisson in Kitton, 1869 | | |
| Surirella minuta Brébisson in Kützing, 1849 | ''Surirella ovata''; | |
| Synedra curvata Pr. Lavrenko | | |
| Synedra parva Kützing | ''Synedra tabulata var. parva''; | |
| Tabularia fasciculata (C. Agardh) D.M. Williams & Round, 1986 | ''Synedra tabulata var. fasciculata'' and ''Synedra tabulata''; | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira angulata (Gregory) Hasle, 1978 | | |
| Thalassiosira eccentrica (Ehrenberg) P.T. Cleve, 1903-1904 | | |
| Thalassiosira parva Proshk.-Lavr., 1955 | | |
| Torodinium robustum Kofoid & Swezy, 1921 | | |
| Toxarium undulatum J.W. Bailey, 1854 | | |
| Trachelomonas ornata (Svirenko) Skvortzov | | |
| Trachelomonas volvocina Ehrenberg, 1833 | | |
| Tribonema ambiguum Skuja | | |
| Tribonema angustissimum Pascher | | |
| Tribonema crassum Pascher | | |
| Tribonema minus (Wille) Hazen | | |
| Tribonema vulgare Pascher, 1923 | | |
| Tryblionella compressa (J.W. Bailey) M. Poulin in Poulin et al., 1990 | ''Nitzschia punctata''; | |
| Ulnaria ulna (Nitzsch) P. Compère in Jahn et al., 2001 | ''Synedra ulna''; | |
| Xenococcus elenkinii Pohribniak | | |