CARIOSI. 129 



B. felleus. Bull. 



Pileus, convex or nearly plane, firm, becoming soft, 

 glabrous, even, variable in color, pale yellowish, grayish brown, 

 reddish brown, or chestnut ; flesh white, often changing to 

 flesh color where wounded, taste bitter. 



Tubes, adnate, long, convex, depressed around the stem, 

 mouths angular, white, becoming tinged with flesh color. 



Stem, variable, equal, tapering upwards, short or long, 

 sometimes bulbous at the base, subglabrous, reticulated up- 

 wards. Colored like or a little paler than the pileus. 



Spores, .0005 to .0007 inch long, .00016 to .0002 inch 

 broad, flesh colored. 



Common in woods and pastures throughout the Valley. 



B. gracilis. Pk. 



Pileus, convex, glabrous or minutely tomentose, rarely 

 squamulose, ochraceous brown, tawny brown, or reddish 

 brown ; flesh white. 



Tubes, plane or convex, depressed around the stem, nearly 

 free, whitish, becomish pale flesh colored, mouths subrotund. 



Stem, long, slender, equal or slightly tapering upwards, 

 pruinose or minutel}' furfuraceous, even or marked by slender 

 elevated anastomosing lines which form long narrow reticu- 

 tions. 



Spores, .0005 to .0007 inch long, .0002 to .00025 inch 

 broad. 



Pileus one to two inches broad. 



Found it growing in woods near Wescoesville. 



Genus IX. CARIOSI. 



Stem never reticulated, stuffed with a spongy pith, at length 

 commonly excavated, tubes at first white, then often yellowish, 

 mouths minute, round. 



