| Species | as Species | Doubtful |
|---|
Connected successfully| Achnanthes longipes Agardh, 1824 | | |
| Amphora hyalina Kützing, 1844 | | |
| Anabaenopsis arnoldii Apetk | | |
| Asterionella gracillima (Hantzsch) Heiberg, 1863 | | |
| Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 | ''Bacillaria paradoxa''; | |
| Bacteriastrum delicatulum Cleve, 1897 | | |
| Biddulphia rhombus (Ehrenberg) W. Smith, 1856 | | |
| Campylodiscus thuretii var. lineolatum Pr.-Lavr., 1955 | | |
| Cerataulina pelagica (Cleve) Hendey, 1937 | ''Cerataulina bergonii''; | |
| Chaetoceros abnormis Proschkina-Lavrenko, 1953 | | |
| Chaetoceros affinis Lauder, 1864 | | |
| Chaetoceros compressus Lauder, 1864 | | |
| Chaetoceros curvisetus P.T. Cleve, 1889 | | |
| Chaetoceros danicus P.T.Cleve, 1889 | | |
| Chaetoceros densus P.T. Cleve, 1901 | | |
| Chaetoceros diadema (Ehrenberg) Gran, 1897 | ''Chaetoceros subsecundus''; | |
| Chaetoceros insignis Prosckina-Lavrenko | | |
| Chaetoceros laciniosus Schütt, 1895 | | |
| Chaetoceros lauderi Ralfs in Lauder, 1864 | | |
| Chaetoceros lorenzianus Grunow, 1863 | | |
| Chaetoceros peruvianus Brightw. | | |
| Chaetoceros scabrosus Prosckina-Lavrenko | | |
| Chaetoceros similis P.T. Cleve, 1896 | | |
| Chaetoceros socialis f. autumnalis A.I. Proshkina-Lavrenko | | |
| Chaetoceros socialis f. vernalis A.I. Proshkina-Lavrenko | | |
| Chaetoceros subtilis (Proschkina-Lavrenko) Proschkina-Lavrenko, 1961 | | |
| Chaetoceros teres P.T. Cleve, 1896 | | |
| Chaetoceros wighamii Brightwell, 1856 | | |
| Chaetoceros willei Grunow, 1897 | ''Chaetoceros affinis var. willei''; | |
| Cocconeis scutellum (Grunow in Van Heurck) P.T. Cleve, 1896 | | |
| Coscinodiscus commutatus Grunow, 1884 | ''Coscinodiscus jonesianus var. commutatus''; | |
| Coscinodiscus granii Gough, 1905 | | |
| Coscinodiscus oculus-iridis (Ehrenberg) Ehrenberg, 1854 | | |
| Cyclotella caspia Grunow, 1878 | | |
| Cymatopleura elliptica (Brébisson ex Kützing) W. Smith, 1851 | | |
| Dactyliosolen fragilissimus (Bergon) G. R. Hasle, 1991 | ''Rhizosolenia fragillissima''; | |
| Detonula confervacea (P.T. Cleve) Gran, 1900 | | |
| Diatoma vulgare Bory de Saint-Vincent, 1824 | | |
| Dictyocha speculum Ehrenberg | ''Dictyocha (Distephanus) speculum''; | |
| Dictyocha speculum var. aculeata (Ehrenberg) J.Frenguelli | ''Dictyocha (Distephanus) speculum var. aculeata''; | |
| Dictyocha speculum var. octonarius (Ehrenberg) F.J.Taylor | ''Dictyocha (Distephanus) speculum var. octonarius''; | |
| Dinophysis acuminata Claparède & Lachmann, 1859 | also ''Dinophysis baltica''; | |
| Dinophysis acuta Ehrenberg, 1841 | | |
| Dinophysis caudata Saville-Kent, 1881 | | |
| Dinophysis hastata Stein, 1883 | | |
| Dinophysis ovum Schütt, 1895 | | |
| Dinophysis sacculus Stein, 1883 | | |
| Diplopsalis lenticula Bergh, 1881 | ''Glenodinium lenticula''; | |
| Distephanus speculum f. polyactis (Ehrenberg) Jørgensen | Dictyocha speculum f. polyactis; | |
| Distephanus speculum var. septenarius (Ehrenberg) Jørgensen | ''Dictyocha (Distephanus) speculum f. septenarius''; | |
| Ditylum brightwellii (T. West) Grunow in Van Heurck, 1883 | | |
| Ebria tripartita (Shumann) Lemmermann, 1899 | | |
| Entomoneis alata (Ehrenberg) Ehrenberg, 1845 | ''Amphiprora alata''; | |
| Euglena viridis (O.F. Müller) Ehrenberg, 1832 | | |
| Eutreptia viridis Perty | | |
| Gonyaulax diegensis Kofoid, 1911 | | |
| Gonyaulax minima Matzenauer, 1933 | | |
| Gonyaulax polygramma Stein, 1883 | | |
| Grammatophora marina (Lyngbye) Kützing, 1844 | | |
| Gyrodinium fusiforme Koifoid & Swezy, 1921 | | |
| Gyrodinium spirale (Bergh, 1881) Kofoid et Swezy, 1921 | | |
| Gyrosigma distortum (W. Smith) Griffith & Henfrey, 1856 | | |
| Halosphaera viridis Schmitz | | |
| Hemiaulus hauckii Grunow in Van Heurck, 1882 | | |
| Hermesinum adriaticum O.Zacharias, 1906 | | |
| Heterocapsa triquetra (Ehrenberg, 1840) Stein, 1883 | ''Peridinium triquetrum''; | |
| Hexasterias problematica Cleve, 1900 | | |
| Kryptoperidinium foliaceum (Stein, 1883) Lindemann, 1924 | ''Glenodinium foliaceum''; | |
| Leptocylindrus danicus P.T. Cleve, 1889 | | |
| Leptocylindrus minimus Gran, 1915 | | |
| Licmophora ehrenbergii (Kützing) Grunow, 1867 | | |
| Licmophora flabellata C. Agardh, 1830 | | |
| Lingulodinium polyedrum (Stein, 1883) Dodge, 1989 | ''Gonyaulax polyedra''; | |
| Melosira arenaria Moore ex Ralfs, 1843 | | |
| Melosira lineata (Dillwyn) C.A. Agardh, 1824 | ''Melosira juergensi''; | |
| Melosira lineata var. subangularis (Grunow) M. Aboal | '' Melosira juergensii var. subangularis''; | |
| Melosira moniliformis (O.F. Müller) C. Agardh, 1824 | | |
| Melosira moniliformis var. octogona (Grunow) Hustedt | | |
| Melosira moniliformis var. subglobosa (Grunow) Hustedt | | |
| Melosira nummuloides C.A. Agardh, 1824 emend. Crawford, 1975 | | |
| Melosira varians C.A. Agardh, 1827 | | |
| Meringosphaera mediterranea Lohmann, 1902 | | |
| Neoceratium furca (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium furca''; | |
| Neoceratium furca var. berghii (Jørg.) Krachmalny, 2011 | ''Ceratium furca var. berghii''; | |
| Neoceratium fusus (Ehrenberg) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium fusus''; | |
| Neoceratium minutum (Jørgensen) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium minutum''; | |
| Neoceratium tripos (O.F.Müller) F.Gomez, D.Moreira & P.Lopez-Garcia, 2009 | ''Ceratium tripos''; | |
| Nitzschia closterium (Ehrenberg) W. Smith, 1853 | | |
| Nitzschia incerta (Grunow) M.Peragallo 1903 | ''Nitzschia reversa''; | |
| Nitzschia longissima (Brébisson in Kützing) Ralfs in Pritchard, 1861 | | |
| Noctiluca scintillans (Macartney, 1810) Kofoid, 1920 | ''Noctiluca miliaris''; | |
| Odontella mobiliensis (J.W. Bailey) Grunow, 1884 | ''Biddulphia mobiliensis''; | |
| Oxyrrhis marina Dujardin, 1841 | | |
| 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 knipowitzschii Ussatschew | | |
| Peridinium umbonatum F. Stein, 1883 | ''Peridinium inconspicuum''; | |
| Petrodictyon gemma (Ehrenberg) D.G. Mann in Round et al., 1990 | ''Surirella gemma''; | |
| Phalacroma rotundata (Claparéde & Lachmann) Kofoid & Michener, 1911 | also ''Phalacroma rudgei''; | |
| Planktoniella sol | | |
| Pleurosigma elongatum W. Smith, 1852 | | |
| Porosira glacialis (Grunow) E. Jørgensen, 1905 | | |
| Proboscia alata (Brightwell) Sundström, 1986 | ''Rhizosolenia alata''; | |
| Prorocentrum compressum (Bailey, 1850) Abé ex Dodge, 1975 | ''Exuviaella compressa''; | |
| Prorocentrum cordatum (Ostenfeld, 1901) Dodge, 1975 | ''Exuviaella cordata''; | |
| Prorocentrum micans Ehrenberg, 1834 | | |
| 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 brochii (Kofoid & Swezy) Balech | ''Peridinium brochii''; | |
| Protoperidinium conicum (Gran, 1900) Balech, 1974 | ''Peridinium conicum''; | |
| Protoperidinium crassipes (Kofoid, 1907) Balech, 1974 | ''Peridinium crassipes''; | |
| 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 oceanicum (VanHöffen, 1897) Balech, 1974 | ''Peridinium oceanicum''; | |
| Protoperidinium pallidum (Ostenfeld, 1899) Balech, 1973 | ''Peridinium pallidum''; | |
| Protoperidinium pellucidum Bergh, 1882 | ''Peridinium pellucidum''; | |
| Protoperidinium pentagonum (Gran, 1902) Balech, 1974 | ''Peridinium pentagonum''; | |
| Protoperidinium steinii (Jörgensen, 1899) Balech, 1974 | ''Peridinium steinii''; | |
| Protoperidinium subinerme (Paulsen, 1904) Loeblich III, 1970 | ''Peridinium subinerme''; | |
| Prymnesium parvum N. Carter, 1937 | | |
| Pseudo-nitzschia seriata (P.T. Cleve, 1883) H. & M. Peragallo, 1900 | ''Nitzschia seriata''; | |
| Pseudosolenia calcar-avis (Schultze) Sundström, 1986 | ''Rhizosolenia calcar-avis''; | |
| Pyrophacus horologicum Stein, 1883 | | |
| Rhabdonema adriaticum Kützing, 1844 | | |
| Scenedesmus quadricauda (Turpin) Brébisson in Brébisson & Godey, 1835 | | |
| Skeletonema costatum (Greville) P.T. Cleve, 1878 | | |
| Striatella unipunctata (Lyngb.) Ag. | | |
| Surirella fastuosa (Ehrenberg) Kützing, 1844 | | |
| Thalassionema nitzschioides (Grunow, 1862) Van Heurck, 1896 | | |
| Thalassiosira baltica (Grunow in P.T. Cleve & Grunow) Ostenfeld, 1901 | ''Thalassiosira subsalina''; | |
| Thalassiosira eccentrica (Ehrenberg) P.T. Cleve, 1903-1904 | | |
| Thalassiosira leptopus (Grunow In Van Heurck) Fryxell et Hasle, 1977 | ''Coscinodiscus lineatus''; | |
| Thalassiosira oestrupii (Ostenfeld) Hasle | ''Coscinosira oestrupii''; | |
| Thalassiosira parva Proshk.-Lavr., 1955 | | |
| Triceratium antediluvianum (Ehrenberg) Grunow in Hustedt, 1927 | | |
| Trochiscia brachiolata (Möbius) Lemmermann | | |