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the eastern United States, and as far west as Wisconsin. The 

 cap varies from yellow to brown, the flesh and tubes are yellow, 

 and the yellow stem is beautifully reticulated to the base. 



Boletus scaher Fries. 



Common in various habitats. 



This is one of the best known and most abundant of all the 

 species of boleti. The scabrous stem and the unchanging white 

 flesh and tubes should distinguish it, in spite of the variable 

 colors of the cap. Edible. 



Boletus speciosus Frost. 



Not rare in openings in woods. 



This beautiful species is easily known by its apple-red cap 

 without a bloom and its brilliant yellow tubes and stem, the latter 

 reticulated. B. hicolor and B. Peckii are related species. 



Boletus separans Peck. 



A very abundant and very handsome species, found usually in 

 open woods near the roads and trails. Also found in abundance 

 at Falls Church, Virginia, during the latter part of July. 



Cap and stem brownish lilac, the latter reticulated ; flesh and 

 tubes white ; spores yellowish brown. 



Boletus subtomentosus L, 



Quite common along roads and trails. 



This widespread plant has been reported from many parts of 

 America. It is one of the boleti that may be dried in the sun, 

 being of a spongy rather than a fleshy texture. The cap is 

 usually yellowish brown or olive-tinted, with a distinct tomentum, 

 and the large tubes and stem are yellow. B. chtysenteron, a 

 closely related species, usually has more red both in cap and stem. 

 Edible. 



Boletus Vanderbiltianus sp. nov. 



Pileus subconical, 2-3 cm. broad, 1-2 cm. thick; surface smooth, 

 dry, conspicuously ornamented on the umbo with dense, pointed, 

 imbricated, dark purple scales, which become gradually smaller 

 and give place to minute purplish specks near the margin, the 

 color changing from atropurpureous to latericeous ; margin thin, 

 undulate, concolorous, with a distinct niflexed sterile portion i 

 mm. broad : context thick, fleshy, firm, cream-colored, unchange- 



