Kingdom Protoctista Hogg, 1860 Phylum Chlorophyta Pascher (1914) - green algae Class Chlorophyceae Wille (1884) - chlorophytes Order Chlorococcales Pascher see Order Chlamydomonadales F.E. Fritsch Family Characiaceae (Nägeli) Wittrock 1 Genus Ankyra Fott (1957) 2 Genus Schroederia Lemmermann (1898) 3 Genus Characium A.Braun, in F.T. Kützing (1849) 4 Genus Hydrianum Rabenh. (1868)