PLATE II* 



103 



Sporangiophore with Columella Attached and" Ripe Sporangium 

 Showing Spores Within. 



Various Stages in the Formation and Germination of a Zygospore. 



* Plates I-VI photographed from models manufactured by R. 

 Brendel, Berlin Grunewald, Bismarck Allee 37, Germany. 



