242 



RESEARCHES ON FUNGI 



a 



i. 



a 



i. 



\k\ 





o 

 6 



Fig. 104. — Coprinus sterquilinus. This drawing corresponds to the section given in 

 Fig. 105. It shows the appearance of part of a gill-surface, including the 

 gill-edge, after spore-discharge and autodigestion have begun (surface views 

 anywhere just above the gill-edge region indicated by a in Fig. 97, E, p. 232, 

 would have this appearance). Tliere are five zones running parallel to the 

 oblique gill-edge: (\) a — a, zone of basidia with ripe spores. The basidia are 

 dimorphic, long and short. The spores of the long basidia, which are more 

 deeply shaded, often stand in part above spores of the short basidia. The 

 paraphyses are permanently sterile elements which separate adjacent basidia and 

 prevent mutual jostling. (2) b^ — h^ and b^ —b^, together, form the zone of spore- 

 discharge where the basidia are discharging their spores into an interlamellar 



