278 



STRUCTURE AND LIFE HISTORIES 



composed of innumerable hyphse (Fig. 201), closely asso- 

 ciated together in a pseudo-tissue, but there is no real 



Fig. 201. — Cortinarius cinnamomeus. Above, longitudinal section 

 through stipe and pileus, showing gills (g); below, longitudinal section 

 through primary and secondary gills; h, hymenium or sporogenous surface. 

 (After Gertrude E. Douglas.) 



tissue-differentiation, such as occurs in the mosses and 

 ferns and higher plants, though the external layer may 

 usually be peeled off with ease. 



270. Reproduction. — If the pileus of Agaric us is placed 



