Acanthosphaera Lemmermann, 1899 (extant flag source)
Acanthosphaera Lemmermann, 1899 (basis of record)
Acrosiphonia J.G. Agardh, 1846 (basis of record)
Acrosiphonia J.G. Agardh, 1846 (extant flag source)
Actinastrum Lagerheim, 1882 (extant flag source)
Actinastrum Lagerheim, 1882 (basis of record)
Actinochloris Korshikov, 1953 (basis of record)
Actinochloris Korshikov, 1953 (extant flag source)
Ankistrodesmus Corda, 1838 (extant flag source)
Ankistrodesmus Corda, 1838 (basis of record)
Ankyra Fott, 1957 (extant flag source)
Ankyra Fott, 1957 (basis of record)
Aphanochaete Braun, 1851 (extant flag source)
Aphanochaete Braun, 1851 (basis of record)
Apiococcus Korshikov, 1926 (extant flag source)
Apiococcus Korshikov, 1926 (basis of record)
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 (extant flag source)
Balticola Droop, 1956 (basis of record)
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 (basis of record)
Bornetella Munier-Chalmas, 1877 (extant flag source)
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 (basis of record)
Bracteacoccus Tereg, 1922 (extant flag source)
Bulbochaete C.A. Agardh, 1817 (basis of record)
Bulbochaete C.A. Agardh, 1817 (extant flag source)
Burkillia W. West & G.S. West, 1908 (basis of record)
Burkillia W. West & G.S. West, 1908 (extant flag source)
Cephaleuros Kunze ex E.M. Fries, 1832 (basis of record)
Chaetochloris Pascher & Korshikov in Korshikov, 1932 (extant flag source)
Chaetochloris Pascher & Korshikov in Korshikov, 1932 (basis of record)
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 (extant flag source)
Chaetophora Schrank, 1783 (basis of record)
Chaetosphaeridium Klebahn, 1892 (basis of record)
Chaetosphaeridium Klebahn, 1892 (extant flag source)
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 (basis of record)
Characiosiphon Iyengar, 1936 (extant flag source)
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 (basis of record)
Chlorangiochaete Korshikov, 1953 (extant flag source)
Chlorangiopsis Korshikov, 1932 (extant flag source)
Chlorangiopsis Korshikov, 1932 (basis of record)
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 (extant flag source)
Chloromonas C. Gobi, 1899-1900 (basis of record)
Chloropelta Tanner, 1980 (basis of record)
Chloropelta Tanner, 1980 (extant flag source)
Chlorosarcina Gerneck, 1907 (extant flag source)
Chlorosarcina Gerneck, 1907 (basis of record)
Chlorosarcinopsis Herndon, 1958 (extant flag source)
Chlorosarcinopsis Herndon, 1958 (basis of record)
Chodatella Lemmermann, 1898 (basis of record)
Chodatella Lemmermann, 1898 (extant flag source)
Cladogonium H. Hirose & M. Akiyama, 1971 (basis of record)
Cladogonium H. Hirose & M. Akiyama, 1971 (extant flag source)
Closteriopsis Lemmermann, 1899 (extant flag source)
Closteriopsis Lemmermann, 1899 (basis of record)
Closterium Nitzsch ex Ralfs, 1848 (extant flag source)
Closterium Nitzsch ex Ralfs, 1848 (basis of record)
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 (extant flag source)
Coelodiscus C.-C. Jao, 1941 accepted as Jaoa K.C. Fan, 1964 (basis of record)
Coenochloris Korshikov, 1953 (extant flag source)
Coenochloris Korshikov, 1953 (basis of record)
Coleochaete Brébisson, 1844 (basis of record)
Coleochaete Brébisson, 1844 (extant flag source)
Collinsiella Setchell & Gardner, 1903 (extant flag source)