164 



RESEARCHES ON FUNGI 



We know from the work of Brefekl ^ that, in the Coprini, 

 every fruit-body comes into existence as a rudiment on a single 



hypha (Figs. 93, 94, 

 and 95). Now the 

 hypha which gave 

 rise to the rudiment 

 which developed 

 into the fruit-body 

 shown in Fig. 91, D, 

 could belong to only 

 one of the one 

 hundred mycelia. 

 Therefore, what has 

 happened in our 

 compound myce- 

 lium is this : of the 



Fig. 92. — Coprinus ster- 

 quilinus, ahomothallic 

 Hynienomycete. On 

 tlie left, a fruit-body 

 developed f roni a.stw^^e 

 mycelium derived from 

 a single spore ; on the 

 right, a fruit-body 

 developed from a com- 

 poiuid mycelium de- 

 rivedfrom manyspores. 

 The cultures were 

 started on the same 

 day, about a month be- 

 fore the photograph 

 was taken. The fruit- 

 body on the right ma- 

 turetl one day earlier 

 than that on the left, 

 and has now collapsed. 

 Culture medium, steri- 

 lised liorse dung. Tlie 

 cotton-wool plugs were 

 removed from the tubes 

 48 hours ago to allow 

 the fruit-bodies to elon- 

 gate without being in- 

 jured. Reduced to 

 seven-tenths the natural 

 size. 



1 0. Brefeld, Untersuchungen iiber Pike, Leipzig, Heft III, 1877, pp. 33-35, 

 Taf. I, Figs. 5 and 6. 



