174 NEW YORK STATE MUSEUM 



but less permanent than the upper. The cap is more highly colored when 

 young and is apt to become paler with age, but the margin does not become 

 paler than the central part, as it so often does in the edible boletus. Indi- 

 viduals sometimes occur in which the stem is nearly cylindric and reticulated 

 only on the upper part. These connect so closely with the edible boletus 

 that we have considered this to be a mere variety of it. In size and in edible 

 qualities it is very similar to that species. 



Boletus brevipes Pk. 



Short stemmed Boletus 



PLATE 66, fig. 1-6 



Pileus convex, covered with a thick, tough gluten when young or moist, 

 dark chestnut color, sometimes fading- to dingy tawny with age, the margin 

 inflexed, flesh white or tinged with yellow ; tubes short, adnate, small, sub- 

 rotund, at first whitish, then dingy ochraceous ; stem short, solid, not dotted 

 or sometimes with a few very minute, inconspicuous dots at the apex, whitish ; 

 spores subfusiform, .0003 of an inch long, .00012 broad. 



The short stemmed boletus is a near relative to the granulated boletus, 

 B. granulatus, from which it differs specially in the darker color of the 

 cap, the more copious gluten, the shorter stem and the absence of any con- 

 spicuous dots or granules from the stem. Its cap is commonly 1.5 to 2.5 

 inches broad ; its stem .5 to 1 inch long and 3 to 5 lines thick. It grows in 

 sandy soil under or near pine trees or in pine groves or woods and appears 

 late in autumn. The stems are so short that the cap seems to rest directly 

 on the ground. It is usually defiled by dirt, sticks and leaves which adhere 

 tenaciously to the gluten. 



The caps should be peeled and the tubes removed before cooking. 



Boletus affinis Pk. 



Related Boletus 



PLATE 66, fig. 7-14 



Pileus convex above or nearly plane, subglabrous, reddish brown or 

 chestnut color, fading to tawny or dingy ochraceous with age, flesh white ; 

 tubes plane or convex, adnate or slightly depressed around the stem, at first 

 white and stuffed, then glaucous yellow or subochraceous, changing to rusty 



