"I] 



PLECTASCALES 



59 



Fig. 19. Eremascus fertilis Stoppel ; stages in the formation of tlie ascus, both by fusion of two 

 cells and parthenogenetically; after Guilliermond. 



Fig. 10. Endomyces Magnnsii Lud w. ; a. b. antheridium and oogonium in contact ; c. oogonium after 

 fusio n of sexual nuclei ; d. parthenogenetic ascus ; Endomyces fibuliger Lindner ; e. conjugation 

 between two neighbouring cells, at the end of the hypha is a group of yoiing asci; f. normal and 

 parthenogenetic asci; after Guilliermond. 



