450 



AQUATIC PHYCOMYCETES 



Fig. 29. Polyphagoideae 

 A-B. Endocoenobium eudorinae Ingold on colony of Eudorina: A, thallus 

 with mature zoosporangium; thick-walled cyst of zoospore is at base of 

 sporangium; B, mature spiny resting spore formed after fusion of two thalli. 

 C-E. Sporophlyctis rostrata Serbinow on Draparnaldia: C, uninucleate thallus 

 with rhizoids penetrating alga; D, group of aplanospores which have germi- 

 nated after discharge from sporangium; E, male (smooth) and female (spiny) 



