DESCRIPTIONS OP FUNGI. 125 



Brawn. 



round, pale yellow, at length tinged with green. 

 Stem 2 to 4 inches long, thick, firm, reticu- 

 lated, at first ovate, bulbous, then lengthened, 

 equal, tinted pale yellow and red. The stem 

 in the specimen was j inch thick, swelling from 

 apex downward, but it often measures 2 inches 

 in thickness. This Boletus is considered poi- 

 sonous. 



BOLETUS SUBTOMENTOSUS = almost velvety. 

 The Yellow-cracked Boletus. 



Cap dark brown, 1 to 4 inches broad, convex 

 or nearly plane, soft, dry, covered with soft, 

 weak, appressed hairs, almost olivaceous, of the 

 same color beneath the cuticle, often marked 

 with cracks and divided into little patches; 

 flesh white or pallid. Tubes adnate, or de- 

 pressed around the stem, yellow, mouths large, 

 angular. Stem 1 to 2| inches long, 2 to 5 

 lines thick, stout, somewhat ribbed, or scurfy, 

 with minute dots. The cap varies in color, it 

 may be yellowish-brown. We found the dark 

 brown species growing on decaying wood, in 

 pine woods, during the month of September. 



