346 RESEARCHES ON FUNGI 



of spores produced on one square millimetre of the hymenial surface 

 of Stropharia semiglobata is about 9,000 and that of these, under 

 laboratory conditions, some 720 may be wasted. When the figures 

 are set forth in this way, one perceives that, notwithstanding the 

 number of wasted spores, the efficiency of the fruit-body as a whole 

 for the production and liberation of spores still remains very high. 



In concluding this Chapter, it may be stated that there is no 

 essential difference in the structure of the hymenium of Stropharia 

 semiglobata and of Panaeolus campanulatus. Both are built on the 

 same plan and function in the same manner. The fruit-bodies of 

 both species provide us with excellent examples of the Panaeolus 

 Sub-type of organisation. 



