Kingdom Protoctista Hogg, 1860 Phylum Chlorophyta Pascher (1914) - green algae Class Charophyceae Rabenh. (1863) - stoneworts 1 Order Chlorokybales 2 Order Klebsormidiales K.D. Stewart & K.R. Mattox (1975) 3 Order Coleochaetales 4 Order Charales Lindl. (1836) - stoneworts