Ainactis Kützing, 1843 accepted as Rivularia C.A. Agardh ex Bornet & Flahault, 1886 (original description)
Allogonium Kützing, 1843 (original description)
Asterothrix F.T. Kützing, 1843 (original description)
Chalarctis Kützing, 1843 accepted as Gloeotrichia J.G. Agardh ex Bornet & Flahault, 1886 (original description)
Dasyactis Kützing, 1843 (original description)
Drilosiphon Kützing, 1843 (original description)
Euactis Kützing, 1843 accepted as Rivularia C.A. Agardh ex Bornet & Flahault, 1886 (original description)
Geocyclus Kützing, 1843 accepted as Rivularia C.A. Agardh ex Bornet & Flahault, 1886 (original description)
Heteractis Kützing, 1843 accepted as Rivularia C.A. Agardh ex Bornet & Flahault, 1886 (original description)
Hormosiphon Kützing, 1843 accepted as Nostoc Vaucher ex Bornet & Flahault, 1886 (original description)
Hypheothrix Kützing, 1843 accepted as Schizothrix Kützing ex Gomont, 1892 (original description)
Inactis Kützing, 1843 accepted as Schizothrix Kützing ex Gomont, 1892 (original description)
Leibleinia Kützing, 1843 accepted as Leibleinia (Gomont) L. Hoffman, 1985 (original description)
Leptothrix Kützing, 1843 (Approved Lists, 1980) (original description)
Limnactis Kützing, 1843 (original description)
Limnochlide Kützing, 1843 accepted as Aphanizomenon C. Morren ex É. Bornet & C. Flahault, 1886 (original description)
Mastichonema Kützing, 1843 (original description)
Microhaloa B. Biasoletta, 1832 orth. mut.F.T. Kützing, 1843 accepted as Microcystis Lemmermann, 1907 (original description)
Palmogloea Kützing, 1843 (original description)
Schizodictyon Kützing, 1843 accepted as Symplocastrum (Gomont) Kirchner, 1898 (original description)
Schizosiphon Kützing, 1849 accepted as Rivularia C.A. Agardh ex Bornet & Flahault, 1886 (original description)
Sirosiphon Kützing, 1843 accepted as Stigonema C.A. Agardh ex Bornet & Flahault, 1886 (original description)
Spermosira Kützing, 1843 (original description)
Symphyosiphon Kützing, 1843 (original description)
Symphyothrix Kützing, 1843 accepted as Symploca Kützing ex Gomont, 1892 (original description)