| A class of the *Chlorophyta .  In some classifications it contains all the orders of the Chlorophyta except the Charales (see Charophyta ). In other classifications the orders are divided between the Chlorophyceae, *Oedogoniophyceae , *Bryopsidophyceae , and *Zygnemaphyceae . In the latter system the Chlorophyceae contains the orders *Volvocales , Tetrasporales, *Chlorococcales  , *Ulotrichales  , *Ulvales  , Prasiolales, Microsporales, and Chaetophorales. |