376 



MUSHROOMS, EDIBLE AND OTHERWISE 



Chillicothe. It is one of the easiest of the Boleti to determine. The plants here 

 have a bright brownish-red pileus, with a shade lighter color on the stem ; the 

 latter quite rough and tapering toward the cap. They are usually solitary. The 

 plants in Figure 306 were collected in Michigan and photographed by Dr. Fischer. 



Boletus vermiculosus. Pk. 



Figure 307. Boletus vermiculosus. One-half natural size. 



Vermiculosus means full of 

 small worms. The pileus is 

 broadly convex, thick, firm, 

 dry ; smooth, or very minutely 

 tomentose; brown, yellowish- 

 brown or grayish-brown, some- 

 times tinged with red. The 

 flesh is white or whitish, quick- 

 ly changing to blue where 

 wounded. The tubes are plane 

 or slightly convex, nearly free, 

 yellow ; their mouths small, 

 round, brownish-orange, be- 

 coming darker or blackish with 

 age, changing promptly to blue 

 where wounded. 



The stem is nearly equal, 

 firm, even, paler than the pileus. 

 The spores are ochraceous- 

 brown, 10-12x4-5/*. Peck. 



The plant represented in Figure 307 grew under the beech trees on 

 Cemetery Hill. I found it frequently in the woods, from July to September. 



Boletus Froslii. Russell. 



Frostii is named in honor of Mr. Frost, a noted mycologist. 



The pileus is three to four inches broad; convex, polished, shining, blood-red; 

 the margin is thin, the flesh scarcely changing to blue. 



The tubes are nearly free, greenish-yellow, becoming yellowish-brown with 

 age, their mouths blood-red or cinnabar-red. 



The stem is two to four inches long, three to six lines thick, equal or tapering 

 upward, distinctly reticulated, firm, blood-red. The spores are 12.5-15x5//.. Peck, 

 Boleti of U. S. 



