| Species | as Species | Doubtful |
|---|
Connected successfully| Achnanthes brevipes C.A. Agardh, 1824 | | |
| Achnanthes longipes Agardh, 1824 | | |
| Achnanthes microcephala (Kützing) Grunow, 1880 | | |
| Actinastrum hantzschii Lagerheim, 1882 | | |
| Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 | ''Actinoptychus undulatus''; | |
| Akashiwo sanguinea (K.Hirasaka) G.Hansen & Ø.Moestrup | ''Gymnodinium splendens''; | |
| Amphisolenia bidentata Schröder, 1900 | | |
| Amphora hyalina Kützing, 1844 | | |
| Amphora marina W. Smith 1857 | | |
| Ankistrodesmus falcatus (Corda) Ralfs, 1848 | | |
| Aphanizomenon flos-aquae (Linnaeus) Ralfs ex Bornet & Flahault, 1888 | | |
| Asterionella bleakeleyi W. Smith, 1856 | | |
| Asterionella formosa Hassall, 1850 | | |
| Asterionella gracillima (Hantzsch) Heiberg, 1863 | | |
| Aulacoseira granulata (Ehrenberg) Simonsen, 1979 | ''Melosira granulata''; | |
| Aulacoseira granulata var. angustissima (O. Müller) Simonsen, 1979 | ''Melosira granulata var. angustissima''; | |
| Azpeitia nodulifera (A.W.F. Schmidt) G.A. Fryxell & P.A. Sims, 1986 | ''Coscinodiscus nodulifer''; | |
| Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 | ''Bacillaria paradoxa''; ''Nitzschia paradoxa''; | |
| Ceratium fusus var. seta (Ehrenberg) Sournia, 1966 | | |
| Ceratium horridum var. buceros (Zacharias) Sournia, 1966 | | |
| Ceratoneis arcus (Ehrenberg) Kützing 1844 | | |
| Chaetoceros diadema (Ehrenberg) Gran, 1897 | also ''Chaetoceros subsecundus''; | |
| Chaetoceros didymus Ehrenberg, 1845 | | |
| Chaetoceros diversus Cleve, 1873 | | |
| Chaetoceros holsaticus Schütt, 1895 | | |
| Chaetoceros laciniosus Schütt, 1895 | | |
| Chaetoceros lauderi Ralfs in Lauder, 1864 | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros pseudocurvisetus Mangin, 1910 | | |
| Chaetoceros seiracanthus Gran, 1897 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Climacosphenia moniligera C.G. Ehrenberg | | |
| Cocconeis scutellum (Grunow in Van Heurck) P.T. Cleve, 1896 | | |
| Coscinodiscus centralis Ehrenberg, 1844 | | |
| Coscinodiscus concinnus W. Smith, 1856 | | |
| Coscinodiscus gigas Ehrenb. 1841 | | |
| Coscinodiscus granii Gough, 1905 | | |
| Coscinodiscus janischii Schmidt, 1878 | | |
| Coscinodiscus jonesianus (Greville) Ostenfeld, 1915 | | |
| Coscinodiscus oculus-iridis (Ehrenberg) Ehrenberg, 1854 | | |
| Coscinodiscus perforatus (Forti) Hust., 1928 | | |
| Coscinodiscus radiatus Ehrenberg, 1841 | | |
| Coscinodiscus symmetricus Grev., 1861 | | |
| Craticula cuspidata (Kutzing) D.G. Mann in Round, Crawford & Mann, 1990 | ''Navicula cuspidata''; | |
| Crucigenia tetrapedia (Kirchner) W. & G.S. West, 1902 | | |
| Cyclotella caspia Grunow, 1878 | | |
| Cymatopleura elliptica (Brébisson ex Kützing) W. Smith, 1851 | | |
| Cymbella cistula (Hemprich & Ehrenberg) O. Kirchner, 1878 | | |
| Cymbella tumida (Brébisson) Van Heurck, 1880 | | |
| Dactyliosolen blavyanus Hasle, 1975 | ''Guinardia blavyana''; | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | ''Rhizosolenia fragillissima''; | |
| Detonula confervacea (P.T. Cleve) Gran, 1900 | | |
| Detonula schroederi (Bergon) Gran, 1905 | | |
| Diatoma hiemale (Lyngb.) Heiberg, 1863 | | |
| Diatoma tenue C.A. Agardh, 1812 | ''Diatoma elongatum''; | |
| Diatoma vulgare Bory de Saint-Vincent, 1824 | | |
| Dictyocha fibula Ehrenberg | | |
| Dictyocha octonaria (Ehr.) | | |
| Didymosphenia geminata (Lyngbye) M. Schmidt, 1899 | ''Gomphonema gemiatum''; | |
| Dinophysis acuminata Claparède & Lachmann, 1859 | | |
| Dinophysis acuta Ehrenberg, 1841 | | |
| Dinophysis caudata Saville-Kent, 1881 | also ''Dinophysis homunculus'' and ''Dinophysis caudata var. caudata''; | |
| Dinophysis dentata Schiller, 1928 | | |
| Dinophysis fortii Pavillard, 1923 | | |
| Dinophysis hastata Stein, 1883 | | |
| Dinophysis ovata Claparède & Lachmann | | |
| Dinophysis ovum Schütt, 1895 | | |
| Dinophysis parva Schiller, 1928 | | |
| Dinophysis punctata Jörgensen, 1923 | | |
| Dinophysis sacculus Stein, 1883 | | |
| Dinophysis similis Kofoid & Skogsberg, 1928 | | |
| Dinophysis sphaerica Stein 1883 | | |
| Diploneis smithii (Brébisson in W. Smith) P.T. Cleve, 1894 | | |
| Diplopsalopsis bomba (Stein, 1883) J. D. Dodge & S. Toriumi, 1993 | ''Dissodium asymmetricum''; | |
| 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 | | |
| Encyonema minutum (Hilse in Rabenhorst) D.G. Mann in Round et al., 1990 | ''Cymbella ventricosa''; | |
| Epithemia adnata (Kützing) Brébisson, 1838 | ''Epithemia zebra''; | |
| Fragilaria capucina Desmazières, 1825 | | |
| Fragilaria crotonensis Kitton, 1869 | | |
| Gomphonema angustatum (Kützing) Rabenhorst, 1864 | | |
| Goniodoma polyedricum (Pouchet, 1883) Jørgensen, 1899 | | |
| Gonyaulax africana Schiller, 1929 | | |
| Gonyaulax diegensis Kofoid, 1911 | | |
| Gonyaulax digitale (Pouchet, 1883) Kofoid, 1911 | | |
| Gonyaulax elegans Rampi, 1951 | | |
| Gonyaulax grindleyi Reinecke, 1967 | | |
| Gonyaulax monacantha Pavillard, 1916 | | |
| Gonyaulax monospina Rampi, 1951 | | |
| Gonyaulax polygramma Stein, 1883 | | |
| Gonyaulax spinifera (Claparède & Lachmann, 1859) Diesing, 1866 | | |
| Gonyaulax verior Sournia, 1973 | also ''Gonyaulax diacantha''; | |
| Grammatophora angulosa Ehrenberg, 1841 | | |
| Grammatophora marina (Lyngbye) Kützing, 1844 | | |
| Guinardia delicatula (Cleve) G.R. Hasle, 1996 | ''Rhizosolenia delicatula''; | |
| Guinardia flaccida (Castracane) Peragallo, 1892 | | |
| Guinardia striata (Stoltherfoth) Hasle, 1997 | ''Rhizosolenia stolterfothii''; | |
| Gymnodinium biconicum Schiller, 1928 | | |
| Gymnodinium simplex (Lohmann, 1911) Koifoid & Swezy, 1921 | | |
| Gymnodinium uberrimum (G.J. Allman) Kofoid & Swezy, 1921 | ''Gymnodinium rotundatum''; | |
| Gyrodinium fusiforme Koifoid & Swezy, 1921 | | |
| Gyrodinium lachryma (Meunier, 1910) Kofoid & Swezy, 1921 | | |
| Gyrodinium pellucidum (Wulff, 1916) Schiller, 1933 | | |
| Gyrodinium pusillum (Schilling) Kofoid & Swezy | | |
| Gyrosigma acuminatum (Kützing) Rabenhorst, 1853 | | |
| Gyrosigma balticum (Ehrenberg) Rabenhorst | | |
| Hantzschia amphioxys (Ehrenberg) Grunow in Cleve & Grunow, 1880 | | |
| Hemiaulus hauckii Grunow in Van Heurck, 1882 | | |
| Hemiaulus sinensis Greville, 1865 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | | |
| Heterodinium murrayi Kofoid, 1906 | | |
| Hillea fusiformis (Schiller) Schiller, 1925 | | |
| Hippodonta hungarica (Grunow) Lange-Bertalot, Metzeltin & Witkowski, 1996 | ''Navicula hungarica''; | |
| Hyalodiscus scoticus (Kützing) Grunow, 1879 | | |
| Lagerheimia genevensis (Chodat) Chodat, 1895 | ''Lagerheimia quadriseta''; | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Licmophora abbreviata C.A. Agardh, 1831 | | |
| Licmophora dalmatica (Kütz.) Grun. 1867 | | |
| Licmophora ehrenbergii (Kützing) Grunow, 1867 | | |
| Licmophora gracilis (Ehrenberg) Grunow, 1867 | | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | ''Gonyaulax polyedra''; | |
| Lithodesmium undulatum Ehrenberg, 1841 | | |
| Melosira arenaria Moore ex Ralfs, 1843 | | |
| 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 undulata (Ehrenberg) Kützing, 1844 | | |
| Mesoporos perforatus (Gran) Lillick 1937 | | |
| Navicula forcipata Greville, 1859 | | |
| Navicula gregaria Donkin, 1861 | ''Navicula cryptocephala''; | |
| Navicula pennata A. Schmidt, 1876 | | |
| Navicula radiosa Kützing, 1844 | | |
| Navicula tripunctata (O.F. Müller) Bory, 1822 | ''Navicula gracilis''; | |
| Neoceratium candelabrum (Ehrenberg) F.Gómez, D.Moreira & P.López-Garcia, 2001 | ''Ceratium candelabrum''; | |
| Neoceratium falcatum (Kofoid) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium falcatum''; | |
| Neoceratium furca (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium furca'' and ''Ceratium furca var. furca''; | |
| Neoceratium furca var. eugrammum (Ehrenb.) Krachmalny, 2011 | ''Ceratium furca var. eugrammum''; | |
| Neoceratium fusus (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium fusus'' and ''Ceratium fusus var. fusus''; | |
| Neoceratium hexacanthum (Gourret) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium hexacanthum''; | |
| Neoceratium horridum (Gran) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium horridum''; | |
| Neoceratium inflatum (Kofoid) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium inflatum''; | |
| Neoceratium longipes (Bailey) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium longipes''; | |
| Neoceratium longirostrum (Gourret) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium longirostrum''; | |
| Neoceratium macroceros (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium macroceros''; | |
| Neoceratium pentagonum (Gourret) F.Gomez & P.Lopez-Garcia, 2009 | ''Ceratium pentagonum''; | |
| Neoceratium pulchellum (Schröder) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium pulchellum''; ''Ceratium tripos var. puchellum''; | |
| Neoceratium tripos (O.F.Müller) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium tripos''; | |
| Nitzschia bilobata W. Smith | | |
| Nitzschia closterium (Ehrenberg) W. Smith, 1853 | | |
| Nitzschia distans W. Gregory, 1857 | | |
| Nitzschia hybrida Grunow in Cleve & Grunow, 1880 | | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Nitzschia sigma (Kützing) W. Smith, 1853 | | |
| Nitzschia sigmoidea (Ehrenberg) W. Smith | | |
| Noctiluca scintillans (Macartney, 1810) Kofoid, 1920 | | |
| Octactis octonaria (Ehrenberg) Hovasse, 1946 | ''Dictyocha octonaria''; | |
| Oxytoxum milneri Murray & Whitting, 1899 | | |
| Oxytoxum mitra Stein, 1883 | | |
| Paralia sulcata (Ehrenberg) P.T. Cleve, 1873 | also ''Melosira sulcata''; | |
| Pediastrum simplex Meyen, 1829 | | |
| Peridinium cinctum (O.F.Müller) Ehrenberg | | |
| Petrodictyon gemma (Ehrenberg) D.G. Mann in Round et al., 1990 | ''Surirella gemma''; | |
| Phalacroma parvulum (Schütt, 1895) Jørgensen, 1923 | | |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | ''Dinophysis rotundata''; | |
| Pinnularia sillimanorum Ehrenberg | | |
| Planktoniella sol | | |
| Plectodinium nucleovolvatum Biecheler, 1934 | | |
| Pleurosigma angulatum (Quekett, 1848) Wm. Smith, 1853 | | |
| Pleurosigma elongatum W. Smith, 1852 | | |
| Pleurosigma normanii Ralfs in Pritchard. | | |
| Pleurosigma rigidum Smith, 1853 | | |
| Podolampas elegans Schütt, 1895 | | |
| Polykrikos schwartzii Bütschli 1873 | | |
| Porosira glacialis (Grunow) E. Jørgensen, 1905 | | |
| Proboscia alata (Brightwell) Sundström, 1986 | ''Rhizosolenia alata'' and ''Rhizosolenia alata f. gracillima''; | |
| Pronoctiluca pelagica Fabre-Domerque, 188 | | |
| Pronoctiluca spinifera (Lohmann, 1920) Schiller, 1933 | | |
| Prorocentrum aporum (Schiller, 1918) Dodge, 1975 | | |
| Prorocentrum balticum (Lohmann, 1908) Loeblich, 1970 | ''Exuviaella baltica''; | |
| Prorocentrum compressum (Bailey, 1850) Abé ex Dodge, 1975 | also ''Exuviaella compressa''; | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | ''Exuviaella cordata'' and ''Prorocentrum minimum''; | |
| Prorocentrum dentatum Stein, 1883 | | |
| Prorocentrum lima (Ehrenberg, 1860) Stein, 1975 | | |
| Prorocentrum maximum (Gourret, 1883) Schiller, 1937 | | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Prorocentrum ovum (Schiller, 1918) Dodge, 1975 | | |
| Prorocentrum pyriforme (Schiller) Taylor | | |
| Prorocentrum rotundatum Schiller, 1928 | | |
| Prorocentrum scutellum Schröder, 1900 | | |
| Protoceratium areolatum Kofoid, 1907 | | |
| Protoceratium reticulatum (Claparède et Lachmann, 1859) Bütschli, 1885 | | |
| Protoperidinium bipes (Paulsen, 1904) Balech, 1974 | ''Minuscula bipes'' and ''Peridinium minusculum''; | |
| Protoperidinium brevipes (Paulsen, 1908) Balech, 1974 | ''Peridinium brevipes''; | |
| Protoperidinium claudicans (Paulsen, 1907) Balech, 1974 | ''Peridinium claudicans''; | |
| Protoperidinium conicum (Gran, 1900) Balech, 1974 | ''Peridinium conicum''; | |
| Protoperidinium crassipes (Kofoid, 1907) Balech, 1974 | ''Peridinium crassipes''; | |
| Protoperidinium curtipes (Jørgensen, 1912) Balech, 1974 | ''Peridinium curtipes''; | |
| Protoperidinium curvipes (Ostenfeld, 1906) Balech, 1974 | ''Peridinium curvipes''; | |
| Protoperidinium deficiens (Meunier, 1919) Balech, 1974 | ''Peridinium deficiens''; | |
| 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 grande (Kofoid, 1907) Balech, 1974 | ''Peridinium grande''; | |
| Protoperidinium granii (Ostenfield, 1906) Balech, 1974 | ''Peridinium granii''; | |
| Protoperidinium leonis (Pavillard, 1916) Balech, 1974 | ''Peridinium leonis''; | |
| Protoperidinium mariaelebouriae (Paulsen, 1931) Balech, 1974 | | |
| Protoperidinium oblongum (Aurivillius, 1898) Parke & Dodge, 1976 | ''Peridinium divergens''; | |
| 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 punctulatum (Paulsen, 1908) Balech, 1974 | | |
| Protoperidinium pyriforme (Paulsen, 1907) Balech, 1974 | ''Peridinium pyriforme''; | |
| Protoperidinium solidicorne (Mangin, 1922) Balech, 1974 | ''Peridinium solidicorne''; | |
| Protoperidinium steinii (Jörgensen, 1899) Balech, 1974 | ''Peridinium steinii''; | |
| Protoperidinium subinerme (Paulsen, 1904) Loeblich III, 1970 | ''Peridinium subinerme''; | |
| Pseudo-nitzschia delicatissima (P.T. Cleve, 1897) Heiden, 1928 | ''Nitzschia delicatissima''; | |
| Pseudo-nitzschia prolongatoides (G.R. Hasle) G.R. Hasle 1993 | ''Nitzschia prolongatoides''; | |
| Pseudo-nitzschia pungens (Grunow ex P.T. Cleve, 1897) Hasle, 1993 | ''Nitzschia pungens''; | |
| Pseudo-nitzschia seriata (P.T. Cleve, 1883) H. & M. Peragallo, 1900 | ''Nitzschia seriata''; | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | ''Rhizosolenia calcar-avis''; | |
| Pterosperma cristatum Schiller, 1925 | | |
| Pyrocystis fusiformis (Wyville Thomson, 1876 ex Haeckel, 1890) Blackman, 1902 | | |
| Pyrophacus horologicum Stein, 1883 | | |
| Pyrophacus steinii (Schiller, 1935) Wall & Dale, 1971 | | |
| Rhabdonema adriaticum Kützing, 1844 | | |
| Rhizosolenia imbricata Brightwell, 1858 | ''Rhizosolenia shrubsolei''; | |
| Rhizosolenia setigera Brightwell, 1858 | | |
| Rhizosolenia styliformis Brightwell, 1858 | | |
| Rhoicosphenia abbreviata (C.A. Agardh) Lange-Bertalot, 1980 | ''Rhoicosphenia curvata''; | |
| Rhopalodia gibba (Ehrenberg) G.F.O. Müller, 1895 | | |
| Scenedesmus quadricauda (Turpin) Brébisson in Brébisson & Godey, 1835 | | |
| Scrippsiella trochoidea (Stein, 1883) Balech ex Loeblich III, 1965 | ''Peridinium trochoideum''; | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Spirogyra protecta H.C.Wood 1872 | | |
| Spirulina subsalsa Örstedt ex Gomont 1892 | | |
| Staurastrum limneticum Schmidle | | |
| Stellarima stellaris (Roper) G.R. Hasle & P.A. Sims, 1986 | ''Coscinodiscus stellaris''; | |
| Striatella delicatula (Kützing) Grunow ex Van Heurck, 1881 | | |
| Surirella fastuosa (Ehrenberg) Kützing, 1844 | | |
| Synedra limnetica Lemmermann 1900 | | |
| 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 anguste-lineata (A. Schmidt) Fryxell et Hasle, 1977 | ''Coscinosira polychorda'' and ''Coscinodiscus polychordus'' and ''Thalassiosira polychorda''; | |
| Thalassiosira antarctica Comber, 1896 | ''Thalassiosira fallax''; | |
| Thalassiosira eccentrica (Ehrenberg) P.T. Cleve, 1903-1904 | ''Coscinodiscus eccentricus''; | |
| Thalassiosira gravida P.T. Cleve, 1896 | | |
| Thalassiosira leptopus (Grunow In Van Heurck) Fryxell et Hasle, 1977 | ''Coscinodiscus lineatus''; | |
| Thalassiosira levanderi van Goor, 1924 | | |
| Thalassiosira nordenskioeldii P.T. Cleve, 1873 | | |
| Thalassiosira rotula Meunier, 1910 | | |
| Ulnaria acus (Kütz.) Aboal, 2003 | ''Synedra acus''; | |
| Ulnaria ulna (Nitzsch) P. Compère in Jahn et al., 2001 | ''Synedra ulna''; | |