338 PHARMACEUTICAL BOTANY 
like Spherella [Fig. 245 (3)] and Chlamydomonas consist of single 
cells bearing a pair of cilia, while others like Pandorina, Eudorina 
Fic. 245.—Various types of Green Algee. Ulothrix (1); Pleurococcus (2); Spharella 
(3); Cosmarium (4); Rhaphidium (5); Vaucheria (6); Rhizoclonium (7); Hydrodictyon (8); 
Oedogonium (9); Botrydium (10); pgnema (11); Draparnaldia (12); Zygnema during 
conjugation (13). 
and Volvox show varying degrees of colony formation. Repro- 
duction sexual or asexual. 
ae Meare San 
