■ 



Fig. 7. — Cross-section of asci and paraphyses. The ascospores within asci appear 

 to be quite variable in degree of maturation. The two-celled condition is apparent 

 in many spores with some showing a darkening of one cell. (X 750) 



ber in this condition continued to develop. The dark end increased 

 in size, whereas the hyaline end became somewhat distorted (Fig. 8). 

 A large granular spot, approximately one-third to one-fourth the 

 size of the cell sometimes occurred in the dark end. This was only 

 occasionally observed and was not seen after the hyaline cell had 

 again become distended. Ascospores with dark cells and fully dis- 

 tended hyaline cells averaged 18.7 to 20.4 \l by 6.8 to 10.2 \l. These 

 dimensions do not include the sheath, which normally appeared 

 to be quite thin in this advanced stage of maturity. No germ pores 

 were seen, and none are believed to develop in the cell wall prior 

 to extension of the germ tube (Fig. 9). 



In 1956 the type of spores just described were not found in 

 apothecia until June 26. Later they were discovered to germinate 

 readily in the apothecium. Such spores were found in an apparently 

 viable state as late as August 2, 1956. In 1957, germinating asco- 

 spores were found in apothecia on June 7 and were present as late 



30 



