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 Genus Characium A.Braun, in F.T. Kützing (1849)