Polyporaceae 



Boletus. Apparently a well-marked and very distinct species. According to 

 the author, it is readily distinguished by its tenacity and generally dis- 

 torted growth. I have not seen it nor the next. Peck, Boleti of the 

 U. S. 



Professor Peck's measurement of spores, 5oth Report, New York State 

 Botanist, is 13/x. long, 6/* wide. 



B. magnis'porus Frost. PileilS convex, firm, tomentose, golden- 

 yellow; tubes scarcely adnate, even, greenish-yellow, their mouths light 

 cinnabar-red. Stem long, slender, yellow above, red below. Spores 

 15-18x6^. 



Pileus 2.5 to 3.5 in. broad. 



Woods and thickets. New England, Frost; Ohio, Morgan. Peck, 

 Boleti of the U. S. 



I have not recognized it. CAUTION. 



B. Fros'tii Russell. Pileus convex, polished, shining, blood-red, the 

 margin thin. Flesh scarcely changing to blue. Tubes nearly free, 

 greenish-yellow, becoming yellowish-brown with age, their mouths 

 blood-red or cinnabar. Stem equal or tapering upward, distinctly 

 reticulated, firm, blood-red. Spores 12.5-15x5^. 



Pileus 3-4 in. broad. Stem 2-4 in. long, 3-6 lines thick. 



Grassy places under trees or in thin woods. New England, Frost; 

 New York, Peck; New Jersey, Ellis. 



This is a highly colored, beautiful Boletus, but it is not common. 

 The stem sometimes fades with age, and both it and the tubes are apt to 

 lose their color in drying. Peck, Boleti of the U. S. 



I have not recognized it. CAUTION. 



B. Sullivan' tii B. and M. Pileus hemispherical, glabrous, reddish- 

 tawny or brown, brownish when dry, cracked in squares. Tubes free, 

 convex, medium size, angular, longer toward the margin, their mouths 

 reddish. Stem solid, violaceous at the thickened base, red-reticulated 

 at the apex, expanded into the pileus. Spores pallid ochraceous, 

 oblong-fusiform, io-2O/u- long. 



Pileus 3-4 in- broad. Stem i.5~3 in - lon S- 



Compact soil. Ohio. Sttllivant. 



The species is said to be intermediate between Boletus scaber and B. 



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