A 



^^l» 







-I * <■ 











Fig. 35 Oedogonium. A-G, stages in cell division in Oe. grande 

 ( X 526). B, C, formation of ring. F, G, expansion of ring to form new 

 cell. Hj formation of aplanospore in Oe. nebraskense. I, Oe. ciliatuniy 

 position of antherozoid 2 hours after entering egg. J-M, stages in 

 fertilization of ovum of Oe. americanum. K, entrance of sperm. L, 

 fusion of gamete nuclei. M, zygote. N, Oe. kurzii, dwarf male 

 ( X 175)- (A-M, after Ohashi; N, after Pringsheim.) 



66 



