CONTEXT AND PORES WHITE OR PALE. 



ward confirmed it at Kew, where the type is in good condition. The 

 species is unknown to us from Europe. 



SPECIMENS. Many from United States. 

 Compare sordidus. 



Fig. 645. Fig. 646. 



Polyporus galactinus. Fig. 643, upper surface. Fig. 644, section. Fig. 645, fibrils (X6). Fig. 646, pores (X< 



POLYPORUS GALACTINUS (Fig. 643). Pileus sessile, 3x 

 4x1 inches, hygrophanous when growing. When wet, grey; when dry, 

 white. Edge thin. Surface snow-white, and pubescent (Fig. 645 X6) 

 when dry; when wet, grey, and pubescence does not show. Flesh 

 soft, firm when fresh, zonate in drying. Pores (Fig. 646 X6) minute, 

 round. Spores subglobose, 3^ to 4 mic., guttulate. 



This is our most frequent, white species around Cincinnati, grow- 

 ing late in the season on very rotten logs. It is quite hygrophanous. 

 It is similar to Polyporus spumeus excepting in habits, and has much 



306 



