BOLETUS. 125 



stout, bulbous, not reticulated except in a few species. Flesh 

 scarcely changea])le. This group is taken from B. edules as a 

 type. 



B. separans. Pk. Separating Boletus. 



Pileus, convex, thick, smooth, often pitted or lacunose, 

 brownish red or dull lilac, sometimes fading to yellowish on 

 the margin ; flesh white, unchangeable. 



Tubes, adnate, white and stuffed, then convex and 

 depressed around the stem, ochraceous yellow, and sometimes 

 separating from the stem by expansion of the pileus. 



Stem, equal or slightly tapering upwards, reticulated either 

 wholly or in the upper part only ; colored like the pileus or a 

 little paler. 



Spores, subfusiform, ochraceous. 



This is one of the most common Boletus in the Valley, I at first took 

 it for the B. edules, var. currugatus. 



B, edules. Edible Boletus. 



Pileus, convex, nearly plane, smooth, moist, at first com- 

 pact, then soft, variable in color, grayivSh-red or tawny brown; 

 flesh white, reddish beneath the cuticle. 



Tubes, convex, nearly free, long, minute, white, stuffed at 

 first, then yellow greenish. 



Stem, various in length and thickness, with a coarse, fine 

 or hardly any reticulation, white or brownish. 



Spores, oblong, fusiform, .0005 to .oco6 inch long. 



This species is scarce in our Lehigh Valley. You seldom meet with it 

 in our woods. Found specimens in Minesite woods and in mixed woods 

 near Bmaus. Have not met with Prof. Peck's var. clavipes. 



B. eximius. Pk. Select Boletus. 

 Pileus, at first compact, convex, subpruinose, purplish 

 brown, or chocolate color, sometimes with a faint tint of lilac, 

 becoming smoky red, flesh grayish or reddish. 



