Kingdom Protoctista Hogg, 1860 Phylum Chlorophyta Pascher (1914) - green algae Class Chlorophyceae Wille (1884) - chlorophytes Order Volvocales Oltmanns (1904) see Order Chlamydomonadales F.E. Fritsch Family Volvocaceae Ehrenb. (1834) Genus Volvulina Playfair (1915)