100 



CHLOROPHYCEAE 



Fie 68 Spirogyra. A, B, rhizoid formation in S. fluviatilis. C ^izoids and 

 h 'ptophort ofi adnata. D-G, stages m conjugation^ 5. vanan.H gerrmnatK>n 

 of zygospore in S. neglecta. (A, B, after Czurda; C, after Delf, D G, 

 Saunders; H, after Fritsch.) 



