Kingdom Protoctista Hogg, 1860 Phylum Chlorophyta Pascher (1914) - green algae Class Chlorophyceae Wille (1884) - chlorophytes Order Tetrasporales Lemmermann see Order Chlamydomonadales F.E. Fritsch Family Characiochloridaceae Skuja Genus Stylosphaeridium Geitler & Gimesi (1925)