| Species | as Species | Doubtful |
|---|
Connected successfully| Achnanthes brevipes C.A. Agardh, 1824 | | |
| Aphanizomenon flos-aquae (Linnaeus) Ralfs ex Bornet & Flahault, 1888 | | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros danicus P.T.Cleve, 1889 | | |
| Chaetoceros insignis Prosckina-Lavrenko | | |
| Chaetoceros karianus Grunow, 1880 | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros socialis Lauder, 1864 | | |
| Chroococcus minimus (von Keissler) Lemmermann, 1904 | ''Gloeocapsa minima''; | |
| Cocconeis scutellum (Grunow in Van Heurck) P.T. Cleve, 1896 | | |
| Cochlodinium adriaticum Schiller, 1933 | | |
| Cyclotella caspia Grunow, 1878 | | |
| Cylindrotheca closterium (Ehrenberg) Reiman & Lewin, 1964 | | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | ''Rhizosolenia fragillissima''; | |
| Dictyosphaerium pulchellum Wood, 1873 | | |
| Dinobryon balticum (Schütt) Lemmermann, 1900 | ''Dinobryon pellucidum''; | |
| Dinophysis sacculus Stein, 1883 | | |
| Ditylum brightwellii (T. West) Grunow in Van Heurck, 1883 | | |
| Emiliania huxleyi (Lohmann) Hay & Mohler, 1967 | | |
| Eutreptia lanowii Steuer, 1904 | | |
| Gonyaulax minima Matzenauer, 1933 | | |
| Gonyaulax spinifera (Claparède & Lachmann, 1859) Diesing, 1866 | | |
| Gymnodinium variabile Herdman, 1924 | | |
| Gymnodinium wulffii Schiller, 1933 | | |
| Gyrodinium fusiforme Koifoid & Swezy, 1921 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | | |
| Hillea fusiformis (Schiller) Schiller, 1925 | | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Licmophora ehrenbergii (Kützing) Grunow, 1867 | | |
| Limnothrix planctonica (Woloszynska) Meffert, 1988 | ''Oscillatoria planctonica''; | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | | |
| Merismopedia glauca (Ehrenberg) Kützing, 1845 | | |
| Merismopedia minima Beck, 1897 | | |
| Micractinium pusillum Fresenius, 1858 | | |
| Microcystis aeruginosa (Kützing) Kützing, 1846 | | |
| Microcystis pulverea (Wood) Forti in De Toni, 1907 sensu auct. | | |
| Monoraphidium arcuatum (Korshikov) Hindák, 1970 | ''Ankistrodesmus arcuatus''; | |
| Navicula pennata var. pontica Mer. | | |
| 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 longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | ''Pseudo-nitzschia longissima''; | |
| Oocystis elliptica West, 1892 | | |
| Prorocentrum balticum (Lohmann, 1908) Loeblich, 1970 | | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| Protoperidinium bipes (Paulsen, 1904) Balech, 1974 | | |
| Protoperidinium longipes Balech, 1974 | | |
| Protoperidinium pellucidum Bergh, 1882 | | |
| Protoperidinium pyriforme (Paulsen, 1907) Balech, 1974 | | |
| Pseudo-nitzschia delicatissima (P.T. Cleve, 1897) Heiden, 1928 | | |
| Pseudo-nitzschia seriata (P.T. Cleve, 1883) H. & M. Peragallo, 1900 | | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | ''Rhizosolenia calcar-avis''; | |
| Pyrophacus horologicum Stein, 1883 | | |
| Scenedesmus quadricauda (Turpin) Brébisson in Brébisson & Godey, 1835 | | |
| Scrippsiella trochoidea (Stein, 1883) Balech ex Loeblich III, 1965 | | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira angulata (Gregory) Hasle, 1978 | ''Thalassiosira decipiens''; | |
| Thalassiosira baltica (Grunow in P.T. Cleve & Grunow) Ostenfeld, 1901 | ''Thalassiosira subsalina'' Proschkina-Lavrenko, 1955; | |
| Thalassiosira parva Proshk.-Lavr., 1955 | | |