Achnanthidium biasolettiana (Grunow) L. Bukhtiyarova, 1995 accepted as accepted as Achnanthes biasolettiana Grunow, 1880 (basis of record)
Actinotaenium infractum (Messikommer) D.B. Williamson, 2007 (basis of record)
Actinotaenium nivale (Nordst.) Teiling, 1954 (basis of record)
Actinotaenium phymatospermum (Nordst.) Kouwets & Coesel, 1984 (basis of record)
Botrydiopsis arrhiza Borzí, 1895 accepted as Botrydiopsis arhiza A. Borzì, 1895 (basis of record)
Bulbochaete imperialis (Wittr.) Hirn, 1874 (basis of record)
Bumilleriopsis petersiana Vischer & Pascher, 1936 accepted as Bumilleriopsis peterseniana Vischer & Pascher, 1936 (basis of record)
Carteria micronucleata Korshikov in Pascher, 1927 accepted as Carteria micronucleolata Korshikov, 1927 (basis of record)
Chaetonella goetzei Schmidle, 1901 accepted as Chaetonella goetzii Schmidle, 1901 (basis of record)
Chamaesiphon confervicolus A. Braun (basis of record)
Chara fragifera M.C. Durieu de Maisonneuve, 1859 accepted as  (basis of record)
Characiopsis longipes (Rabenhorst) Borzì, 1895 (basis of record)
Chlamydocapsa bacillus (Teiling) Fott, 1972 (basis of record)
Chlamydomonas altera Skuja, 1956 (basis of record)
Chlamydomonas annulata Nygaard, 1949 (basis of record)
Chlamydomonas botryopara Rodhe & Skuja in Skuja, 1949 (basis of record)
Chlamydomonas bourrelleyi H. Ettl, 1965 (basis of record)
Chlamydomonas carpatica H. Ettl, 1976 (basis of record)
Chlamydomonas cienkowskii Schmidle, 1903 (basis of record)
Chlamydomonas clathrata Pascher, 1927 (basis of record)
Chlamydomonas coccifera I.N. Gorozhankin, 1905 (basis of record)
Chlamydomonas cribum H. Ettl, 1965 accepted as Chlamydomonas cribrum Ettl, 1965 accepted as Chlamydomonas typica T.R. Deason & Bold, 1960 (basis of record)
Chlamydomonas depauperata Pascher, 1927 (basis of record)
Chlamydomonas elegans G.S. West, 1915 (basis of record)
Chlamydomonas flos-aquae Brabez, 1941 (basis of record)
Chlamydomonas foveolarum Skuja, 1948 (basis of record)
Chlamydomonas gallica H. Ettl, 1976 (basis of record)
Chlamydomonas gordalensis J.W.G. Lund, 1954 (basis of record)
Chlamydomonas hebes Pascher, 1932 (basis of record)
Chlamydomonas incerta Pascher, 1927 (basis of record)
Chlamydomonas inversa Pascher, 1927 (basis of record)
Chlamydomonas isogama Korshikov in Pascher, 1927 (basis of record)
Chlamydomonas kleinii Schmidle, 1893 (basis of record)
Chlamydomonas klinobasis Skuja, 1956 (basis of record)
Chlamydomonas kniepii F. Moewus, 1931 (basis of record)
Chlamydomonas komarekei H. Ettl, 1976 (basis of record)
Chlamydomonas korschikoffii Pascher, 1927 (basis of record)
Chlamydomonas kuwadae Gerloff, 1940 (basis of record)
Chlamydomonas latifrons Nygaard, 1945 (basis of record)
Chlamydomonas longistigma O. Dill, 1895 (basis of record)
Chlamydomonas micropapillata F. Moewus, 1931 (basis of record)
Chlamydomonas microscopica G.S. West, 1916 (basis of record)
Chlamydomonas microsphaera Pascher & Jahoda, 1928 (basis of record)
Chlamydomonas minuta E.G. Pringsheim, 1930 (basis of record)
Chlamydomonas minutissima Korshikov in Pascher, 1927 (basis of record)
Chlamydomonas palatina Schmidle in Pascher, 1927 (basis of record)
Chlamydomonas peterfi Gerloff, 1940 accepted as Chlamydomonas peterfii Gerloff, 1940 (basis of record)
Chlamydomonas pisum Pascher in Conrad, Frémy & Pascher, 1949 (basis of record)
Chlamydomonas planktogloea Skuja, 1956 (basis of record)
Chlamydomonas polypyrenoides F. Moewus, 1931 (basis of record)
Chlamydomonas primoveris Skuja, 1964 (basis of record)
Chlamydomonas protracta Pascher & Jahoda, 1928 (basis of record)
Chlamydomonas pseudomutabilis H. Ettl, 1976 (basis of record)
Chlamydomonas pseudopertusa H. Ettl, 1976 (basis of record)
Chlamydomonas pseudotarda Bourrelly, 1951 (basis of record)
Chlamydomonas quiescens Skuja, 1956 (basis of record)
Chlamydomonas rapida R. Brabez (basis of record)
Chlamydomonas reticulata Goroschankin, 1891 (basis of record)
Chlamydomonas sagittula Skuja, 1964 (basis of record)
Chlamydomonas spinifera H. Ettl, 1965 (basis of record)
Chlamydomonas tetragama (Bohlin) H. Ettl, 1958 (basis of record)
Chlamydomonas umbonata Pascher, 1927 (basis of record)
Chlamydomonas vulgaris Arachin, 1931 (basis of record)
Chlamydomonas westiana Pascher, 1927 (basis of record)
Chlorochytrium facciolae (Borzí) Bristol, 1920 (basis of record)
Chloromonas cryptophila Hoham & Mullet, 1977 (basis of record)
Chrysocapsa planctonica Pascher, 1913 accepted as Chrysocapsa planktonica Pascher, 1913 (basis of record)
Chrysolykos planktonicus B. Mack, 1951 accepted as Chrysolykos planctonicus B. Mack, 1951 (basis of record)
Closterium closterioides (Ralfs) A. Louis & F. Peeters, 1967 accepted as Closterium closteroides (Ralfs) A. Louis & Peeters, 1967 (basis of record)
Coccomyxa subellipsoidea E. Acton, 1909 accepted as  (basis of record)
Cosmarium levinotabile Croasdale, 1981 (basis of record)
Cosmarium protuberans P. Lundell, 1871 accepted as Cosmarium protruberans P. Lundell, 1871 (basis of record)
Cosmarium pseudarctoum Nordstedt, 1879 (basis of record)
Cosmarium scopulorum O. Borge, 1913 accepted as  (basis of record)
Cyclotella sevillana Deby, 1884 accepted as Cyclotella sevilleana Deby, 1884 (basis of record)
Cyclotella woltereckii Hustedt, 1942 accepted as  (basis of record)
Cymbella bipartita A. Mayer, 1916 (basis of record)
Desmidium bailleyi (Ralfs) Nordst., 1880 accepted as Desmidium baileyi (Ralfs) Nordstedt, 1880 (basis of record)
Desmococcus olivaceum (Pers. ex Acherson) J.R. Laundon accepted as Desmococcus olivaceus (Persoon ex Acharius) J.R. Laundon, 1985 (basis of record)
Dysmorphococcus coccifer Korshikov, 1925 (basis of record)
Encyonema lapponica Krammer, 1997 (basis of record)
Euastrum pingue Elfving, 1881 (basis of record)
Eunotia crista-galli P.T. Cleve, 1891 accepted as Eunotia cristagalli Cleve (basis of record)
Eunotia naegeli Migula, 1907 accepted as Eunotia naegelii Migula, 1907 (basis of record)
Frustulia weinholdi Hust., 1937 accepted as Frustulia weinholdii Hustedt, 1937 (basis of record)
Gloeotaenium loitlesbergerianum Hansg., 1909 accepted as Gloeotaenium loitlesbergereanum Hansgirg, 1909 accepted as Cylindrocapsa geminella Wolle, 1887 (basis of record)
Gomphonema angustum C. Agardh, 1831 (basis of record)
Gonatozygon kinahanii (W. Archer) Rabenhorst, 1868 accepted as Gonatozygon kinahani (W. Archer) Rabenhorst (basis of record)
Hafniomonas botryodes (Jane) H. Ettl (basis of record)
Karayevia suchlandtii (Hustedt) L. Buktiyarova, 1999 (basis of record)
Krasskella kriegeriana (Krasske) R. Ross & P.A. Sims, 1978 accepted as Krasskella kriegerana (Krasske) R. Ross & P.A. Sims, 1978 (basis of record)
Mallomonas longiseta (Lemmermann) Lemmermann (basis of record)
Mesotaenium de greyi W.B. Turner, 1886 accepted as Mesotaenium degreyi W.B. Turner, 1886 (basis of record)
Micrasterias pinnatifola Kütz. ex Ralfs, 1848 (basis of record)
Micrasterias verrucosa Bisset in Wolle, 1885 (basis of record)
Microcrocis subulicola (Lagerh.) Geitler accepted as Microcrocis sabulicola (Lagerheim) Geitler, 1942 (basis of record)
Navicula gysigensis Foged, 1952 accepted as Navicula gysingensis Foged, 1952 (basis of record)
Navicula halophilioides Hustedt, 1959 accepted as Navicula halophiloides Hustedt, 1959 (basis of record)
Navicula jentzii Grunow, 1882 accepted as Navicula jentzschii Grunow, 1882 (basis of record)
Navicula zodhyi Salah, 1953 accepted as Navicula zohdyi Salah, 1953 (basis of record)