Acanthosphaera Lemmermann, 1899 (basis of record)
Acanthosphaera Lemmermann, 1899 (extant flag source)
Acrosiphonia J.G. Agardh, 1846 (basis of record)
Acrosiphonia J.G. Agardh, 1846 (extant flag source)
Actinastrum Lagerheim, 1882 (basis of record)
Actinastrum Lagerheim, 1882 (extant flag source)
Actinochloris Korshikov, 1953 (extant flag source)
Actinochloris Korshikov, 1953 (basis of record)
Ankistrodesmus Corda, 1838 (basis of record)
Ankistrodesmus Corda, 1838 (extant flag source)
Ankyra Fott, 1957 (basis of record)
Ankyra Fott, 1957 (extant flag source)
Aphanochaete Braun, 1851 (basis of record)
Aphanochaete Braun, 1851 (extant flag source)
Apiococcus Korshikov, 1926 (basis of record)
Apiococcus Korshikov, 1926 (extant flag source)
Apiocystis Nägeli, 1849 (extant flag source)
Apiocystis Nägeli, 1849 (basis of record)
Arnoldiella V.V. Miller, 1928 (basis of record)
Arnoldiella V.V. Miller, 1928 (extant flag source)
Asterococcus Scherffel, 1908 (basis of record)
Asterococcus Scherffel, 1908 (extant flag source)
Balticola Droop, 1956 (basis of record)
Balticola Droop, 1956 (extant flag source)
Basicladia W.E. Hoffmann & J.E. Tilden, 1930 (extant flag source)
Basicladia W.E. Hoffmann & J.E. Tilden, 1930 (basis of record)
Binuclearia Wittrock, 1886 (basis of record)
Binuclearia Wittrock, 1886 (extant flag source)
Boergesenia J. Feldmann, 1938 (extant flag source)
Boergesenia J. Feldmann, 1938 (basis of record)
Bornetella Munier-Chalmas, 1877 (extant flag source)
Bornetella Munier-Chalmas, 1877 (basis of record)
Borodinella V. Miller, 1927 (extant flag source)
Borodinella V. Miller, 1927 (basis of record)
Botryococcus Kützing, 1849 (basis of record)
Botryosphaerella P.C. Silva, 1970 (basis of record)
Botryosphaerella P.C. Silva, 1970 (extant flag source)
Bracteacoccus Tereg, 1922 (extant flag source)
Bracteacoccus Tereg, 1922 (basis of record)
Bulbochaete C.A. Agardh, 1817 (basis of record)
Bulbochaete C.A. Agardh, 1817 (extant flag source)
Burkillia W. West & G.S. West, 1908 (extant flag source)
Burkillia W. West & G.S. West, 1908 (basis of record)
Cephaleuros Kunze ex E.M. Fries, 1832 (basis of record)
Chaetochloris Pascher & Korshikov in Korshikov, 1932 (basis of record)
Chaetochloris Pascher & Korshikov in Korshikov, 1932 (extant flag source)
Chaetopedia Skuja, 1948 accepted as Crucigloea C.J. Soeder, 1978 (extant flag source)
Chaetopedia Skuja, 1948 accepted as Crucigloea C.J. Soeder, 1978 (basis of record)
Chaetophora Schrank, 1783 (basis of record)
Chaetophora Schrank, 1783 (extant flag source)
Chaetosphaeridium Klebahn, 1892 (extant flag source)
Chaetosphaeridium Klebahn, 1892 (basis of record)
Chamaedoris Montagne, 1842 (extant flag source)
Chamaedoris Montagne, 1842 (basis of record)
Characiochloris Pascher, 1927 (extant flag source)
Characiochloris Pascher, 1927 (basis of record)
Characiosiphon Iyengar, 1936 (extant flag source)
Characiosiphon Iyengar, 1936 (basis of record)
Chlamydomonas Ehrenberg, 1833 (extant flag source)
Chlamydomonas Ehrenberg, 1833 (basis of record)
Chlorangiella De Toni, 1889 (extant flag source)
Chlorangiella De Toni, 1889 (basis of record)
Chlorangiochaete Korshikov, 1953 (extant flag source)
Chlorangiochaete Korshikov, 1953 (basis of record)
Chlorangiopsis Korshikov, 1932 (basis of record)
Chlorangiopsis Korshikov, 1932 (extant flag source)
Chlorella M. Beijerinck, 1890 (basis of record)
Chlorella M. Beijerinck, 1890 (extant flag source)
Chlorodesmis Harvey & Bailey, 1841 (extant flag source)
Chlorodesmis Harvey & Bailey, 1841 (basis of record)
Chlorokybus L. Geitler, 1942 (basis of record)
Chlorokybus L. Geitler, 1942 (extant flag source)
Chloromonas C. Gobi, 1899-1900 (basis of record)
Chloromonas C. Gobi, 1899-1900 (extant flag source)
Chloropelta Tanner, 1980 (extant flag source)
Chloropelta Tanner, 1980 (basis of record)
Chlorosarcina Gerneck, 1907 (extant flag source)
Chlorosarcina Gerneck, 1907 (basis of record)
Chlorosarcinopsis Herndon, 1958 (basis of record)
Chlorosarcinopsis Herndon, 1958 (extant flag source)
Chodatella Lemmermann, 1898 (basis of record)
Chodatella Lemmermann, 1898 (extant flag source)
Cladogonium H. Hirose & M. Akiyama, 1971 (extant flag source)
Cladogonium H. Hirose & M. Akiyama, 1971 (basis of record)
Closteriopsis Lemmermann, 1899 (basis of record)
Closteriopsis Lemmermann, 1899 (extant flag source)
Closterium Nitzsch ex Ralfs, 1848 (basis of record)
Closterium Nitzsch ex Ralfs, 1848 (extant flag source)
Coccomonas Stein, 1878 (extant flag source)
Coccomonas Stein, 1878 (basis of record)
Codiolum A. Braun, 1855 (basis of record)
Codiolum A. Braun, 1855 (extant flag source)
Coelastrum Nägeli, 1849 (basis of record)
Coelodiscus C.-C. Jao, 1941 accepted as Jaoa K.C. Fan, 1964 (basis of record)
Coelodiscus C.-C. Jao, 1941 accepted as Jaoa K.C. Fan, 1964 (extant flag source)
Coenochloris Korshikov, 1953 (basis of record)
Coenochloris Korshikov, 1953 (extant flag source)
Coleochaete Brébisson, 1844 (extant flag source)
Coleochaete Brébisson, 1844 (basis of record)
Collinsiella Setchell & Gardner, 1903 (basis of record)