| Species | as Species | Doubtful |
|---|
Connected successfully| Ankistrodesmus falcatus (Corda) Ralfs, 1848 | | |
| Aphanocapsa orae (Kosinskaja) Komárek & Anagnostidis 1995 | ''Microcystis orae''; | |
| Aulacoseira granulata var. angustissima (O. Müller) Simonsen, 1979 | ''Melosira granulata var. angustissima''; | |
| Aulacoseira italica (Ehrenberg) Simonsen 1979 | ''Melosira italica''; | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chroococcus minutus (Kützing) Nägeli, 1849 | | |
| Crucigenia tetrapedia (Kirchner) W. & G.S. West, 1902 | | |
| Crucigeniella rectangularis (Nägeli) Komárek, 1974 | ''Crucigenia rectangularis''; | |
| Cyclotella caspia Grunow, 1878 | | |
| Cymbella affinis Kützing, 1844 | | |
| Diatoma vulgare Bory de Saint-Vincent, 1824 | | |
| Ditylum brightwellii (T. West) Grunow in Van Heurck, 1883 | | |
| Emiliania huxleyi (Lohmann) Hay & Mohler, 1967 | | |
| Eutreptia lanowii Steuer, 1904 | | |
| Fragilaria capucina Desmazières, 1825 | | |
| Fragilaria crotonensis Kitton, 1869 | | |
| Glenodinium paululum Lindemann | | |
| Gloeocapsopsis magma (Brébisson) Komárek & Anagnostidis 1986 | ''Gloeocapsa magma''; | |
| Gyrodinium lachryma (Meunier, 1910) Kofoid & Swezy, 1921 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Melosira nummuloides C.A. Agardh, 1824 emend. Crawford, 1975 | | |
| Microcystis pulverea (Wood) Forti in De Toni, 1907 sensu auct. | | |
| Monoraphidium irregulare (G.M.Smith) Komárková-Legnerová | ''Dactylococcopsis irregularis''; | |
| Navicula lanceolata (C.A. Agardh) Ehrenberg, 1838 | | |
| Navicula rhynchocephala Kützing, 1844 | | |
| Neoceratium fusus (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium fusus''; | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Nitzschia tenuirostris Mer. | | |
| Oocystis pelagica Lemmermann | | |
| Peridiniella danica (Paulsen, 1907) Okolodkov et Dogde, 1995 | ''Glenodinium danicum''; | |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | | |
| Phormidium hormoides Setchell & Gardner 1918 | | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | | |
| Protoperidinium bipes (Paulsen, 1904) Balech, 1974 | ''Peridinium minusculum''; | |
| Protoperidinium granii (Ostenfield, 1906) Balech, 1974 | ''Peridinium granii''; | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | ''Rhizosolenia calcar-avis''; | |
| Raciborskiella salina S.Wislouch 1924 | | |
| Rhoicosphenia abbreviata (C.A. Agardh) Lange-Bertalot, 1980 | ''Rhoicosphenia curvata''; | |
| Schroederia setigera (Schröder) Lemmermann, 1898 | | |
| Scrippsiella trochoidea (Stein, 1883) Balech ex Loeblich III, 1965 | | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Skeletonema subsalsum (A.Cleve) Bethge, 1928 | | |
| Snowella lacustris (Chodat) Komárek & Hindák, 1988 | ''Gomphosphaeria lacustris''; | |
| Tabularia fasciculata (C. Agardh) D.M. Williams & Round, 1986 | ''Synedra tabulata''; | |
| Thalassiosira baltica (Grunow in P.T. Cleve & Grunow) Ostenfeld, 1901 | ''Thalassiosira subsalina''; | |
| Tryblionella hungarica (Grunow) Frenguelli, 1942 | ''Nitzschia hungarica''; | |