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RESEARCHES ON FUNGI 



the basidia belonging to the past generations have been set out by 

 themselves. There are twelve of them altogether, if those shown 



ABC 













FIG. 94. Panaeolus campanulatus. Analysis of the hymenium as seen in surface 

 view on the second day of spore-discharge. A, an area equal approximately 

 to 0-005 square mm. (0'06 x 0*09 mm.). This area contains: (1) past- 

 generation basidia, a, which are recognisable by their four sterigmatic stumps 

 and which are set out separately at B ; (2) present -generate on basidia, b, each 

 of which bears four black spores and which are set out separately at C ; (3) 

 coming-generation basidia, c, heavily shaded with dots and set out separately 

 at D ; (4) future-generation basidia, d, smaller than the coming-generation 

 basidia and slightly shaded with dots, set out separately at E ; and (5) 

 paraphyscs, e, not shaded and partly hidden by the other elements, set out 

 separately at F. Magnification, 580. 



in part be included in the count. This number is twice that of the 

 present-generation basidia present on the same area. The inference 



