3i8 



RESEARCHES ON FUNGI 



chains. The result of this development is that a compact and 

 radially constructed mass of cells comes to cover the pileus (c/. v 

 in Fig. 140). As the pileus increases in size, this layer ceases to 



Fig. 140. — Coprinus macrorhizus. Photomicrograph of a vertical 

 section through a very young fruit-body showing : gills, g ; 

 pileus-flesli, /; the stipe, with its elongating pseudorhizal 

 portion, s ; and the veil, v. At this stage the veil is 

 compact but, as tlie pileus grows larger, it breaks up into 

 loose, fugacious, fibrous scales, as in Coprinus logopus. 

 Magnification. 32. 



develop and is therefore forced to split radially between the cell- 

 chains at more or less regular intervals, thus becoming broken up 

 into a large number of small fragments (Fig. 132, p. 304). It is 

 these fragments which form the scales. The scales of Coprinus 

 macrorhizus and of some other species of Coprinus arise in an 

 exactly similar manner. 



