1. Genus Actinophycus Korde, 1954 †
2. Genus Amphithrix Bornet & Flahault, 1886
3. Genus Ariasmontanoa Molinari & Guiry, 2021
4. Genus Calothrix C.Agardh ex Bornet & Flahault, 1886
5. Genus Caudiculophycus J.W.Schopf, 1968 †
6. Genus Cayeuxia Frollo, 1938
7. Genus Concresceraria Vologdin, 1962 †
8. Genus Corbularia Vologdin, 1962 †
9. Genus Dichothrix Zanardini ex Bornet & Flahault, 1886
10. Genus Dulcicalothrix Saraf, Suradkar, Dawda, Gaysina, Gabidullin, Kumat, I.Behere, Kotulkar, Batule & Prashant Singh, 2019
11. Genus Gaillardotella Bory de Saint-Vincent ex Kuntze, 1898
12. Genus Gardnerula G.De Toni, 1936
13. Genus Gomphosiphon Lijing Liu, Yasheng Wu, H.J.Yang & R.Riding, 2016 †
14. Tribe Hedstroemieae Dragastan †
    1. Genus Hedstroemia Rothpletz, 1913 †
15. Genus Heteractis A.P.de Candolle, 1838
16. Genus Isactis Thuret ex Bornet & Flahault, 1886
17. Genus Kordeofistula Molinari & Guiry, 2021 †
18. Genus Kyrtuthrix Ercegovic, 1929
19. Genus Macrochaete Berrendero, J.R.Johansen & Kastovsky, 2016
20. Genus Mastigocoleus Lagerheim ex Bornet & Flahault, 1886
21. Genus Mastigonema H.Schwabe ex A.B.Frank, 1886
22. Genus Microchaete Thuret ex Bornet & Flahault, 1886
23. Genus Montanoa P.González, 1947
24. Genus Nubecularites Maslov, 1937 †
25. Genus Nunduva L.González-Resendiz, H.León-Tejera & J.R.Johansen, 2018
26. Genus Phacelophyton Bian & Zhou, 1990 †
27. Genus Phyllonema D.O.Alvarenga, J.Rigonato, L.H.Z.Branco, I.S.Melo & M.F.Fiore, 2016
28. Genus Primorivularia Edhorn, 1973
29. Genus Richelia J.Schmidt, 1901
30. Genus Rivularia C.Agardh ex Bornet & Flahault, 1886
31. Genus Rivularialithus Maslov, 1955 †
32. Genus Sacconema Borzì ex Bornet & Flahault, 1886
33. Genus Usmunia Bogdanova, 1984 †
34. Genus Zonotrichites J.G.Bornemann, 1886
35. Genus Ainactis Kützing, 1843 accepted as Rivularia C.Agardh ex Bornet & Flahault, 1886
36. Genus Dillwynella Bory de St.-Vincent ex Kuntze, 1891 accepted as Calothrix C.Agardh ex Bornet & Flahault, 1886
37. Genus Diplotrichia J.Agardh, 1842
38. Genus Euactis Kützing, 1843 accepted as Rivularia C.Agardh ex Bornet & Flahault, 1886 (synonym)
39. Genus Hormactis Thuret, 1875 accepted as Brachytrichia Zanardini ex Bornet & Flahault, 1886
40. Genus Mastichonema Kützing, 1843 accepted as Mastigonema H.Schwabe ex A.B.Frank, 1886
41. Genus Nemalectra Rafinesque, 1825 accepted as Rivularia C.Agardh ex Bornet & Flahault, 1886
42. Genus Polythrix G.Zanardini ex É.Bornet & C.Flahault, 1886 accepted as Gardnerula G.De Toni, 1936
43. Genus Rivulariopsis (Kirchner) Voronichin, 1923 accepted as Calothrix C.Agardh ex Bornet & Flahault, 1886
44. Genus Schizosiphon Kützing, 1849 accepted as Rivularia C.Agardh ex Bornet & Flahault, 1886
45. Genus Stenoporidium H.Yabe & S.Toyama, 1928 † accepted as Rivularia C.Agardh ex Bornet & Flahault, 1886
46. Genus Stypnion Rafinesque, 1820 accepted as Rivularia C.Agardh ex Bornet & Flahault, 1886
47. Genus Zonotrichia J.Agardh, 1842 accepted as Rivularia C.Agardh ex Bornet & Flahault, 1886
48. Genus Dasyactis Kützing, 1843 (uncertain)
49. Genus Inomeria Kützing, 1845 (uncertain)
50. Genus Jatuliana Korde, 1965 † (uncertain)
51. Genus Limnactis Kützing ex Bornet & Flahault (uncertain)
52. Genus Mastichothrix Kützing, 1843 (uncertain)
53. Genus Stylobasis Schwabe (uncertain)

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