28 
MORPHOLOGY 
FlGS. 66-73. Sphaeroplea: 66, cells producing sperms; 67, cells producing eggs, 
which are surrounded by sperms; 68, eggs immediately after fertilization, each with one 
nucleus; 6g, fertilized egg (oospore) further advanced, with several nuclei; 70, oospore 
with heavy wall; 71, zoospores formed by oospore; 72, escaped zoospore; 73, young 
filament produced by zoospore. 66, 67, 71, after COHN; 68-70, after KLEBAHN; 7* 
, after HEINRICTTF.R. 
