Polyporacese 



Boletus. Grassy ground under oaks. New York, Peck. 



The species is well marked by the reddish band or line on the stem 

 just below the tubes, but this disappears in drying. Peck, Boleti of 

 the U. S. 



B. aluta'ceilS Morgan yellowish. PileuS cushion-shaped, glabrous, 

 ahitaceous with a tinge of red. Flesh white, inclining to reddish. Tubes 

 semifree, medium in size, unequal, angular, greenish-yellow. Stem 

 nearly equal, striate, reticulate at the apex, colored like the pileus. 

 Spores fusiform, brownish-olive, 12.5x5^. 



Pileus 3 in. broad. 



Rocky woods of oak and chestnut. Kentucky, Morgan. 



The general aspect of the figure of this species recalls some of the 

 forms of Boletus subtomentosus. The tubes are nearly equal in length 

 to the thickness of the flesh of the pileus. Peck, Boleti of the U. S. 



Quite frequent at Mt. Gretna, Pa., in mixed woods, principally oak 

 and chestnut. 



Stem should be removed, and tubes when old. It cooks well and is 

 especially good. 



B. tenui'culus Frost thin. Pileus nearly plane, thin, lurid-red on 

 a yellow ground. Flesh unchangeable. Tubes short, adnate, small, 

 golden-yellow. Stem slender, equal, colored like the pileus. Spores 

 iox6ju.. 



Pileus 1-2 in. broad. Stem 4-6 in. long. 



Woods. New England. Frost. 



The thin pileus and long slender stem readily distinguish this species. 

 Peck, Boleti of the U. S. 



B. auri'porus Pk. golden-pore. Pileus convex or nearly plane, 

 glabrous or merely pruinose-tomentose, grayish-brown, yellowish-brown, 

 or reddish-brown. Flesh white, unchangeable. Tubes plane or slightly 

 depressed around the stem, adnate or subdecurrent, bright golden-yel- 

 low, retaining their color when dried. Stem equal or slightly thickened 

 at the base, viscid or glutinous when moist, especially toward the base, 

 colored like or a little paler than the pileus. Spores 7-5- IOX 4~5/*- 



Pileus 1-3 in. broad. Stem 1-3 in. long, 2-4 lines thick. 



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