i84 



RESEARCHES ON FUNGI 



white (Figs. 69, 70, and 71, pp. 180, 181, and 182). As soon as 

 the stipe has attained a length of about 8 cm., the white changes 



YiG. 12.—Coprinus sterquilinus. 

 A fruit-body with an elon- 

 gating stipe upon which 

 an annulus has just been 

 deposited from the base of 

 the pileus. The pileus and 

 the upper part of the stipe 

 have turned pink. Natural 

 size. 



/ 



Fig. 73. — Coprinus ster- 

 quilinus. A vertical 

 section through a fruit - 

 body with a pileus about 

 to expand. The spores 

 have ripened so that 

 the gills appear black. 

 There is a free fila- 

 ment of loose hyphae 

 running down the 

 middle of the stipe. 

 Natural size. 



to Silvery-grey. A little later the silvery-grey colour becomes 

 converted gradually into pink (Fig. 72). The blushing of the 

 pileus extends itself to the upper exposed parts of the stipe and is 

 due to the development of a red pigment in the cell-sap throughout 

 the affected parts. The red pigment was found to be present in 



