American Boletes 33 



This species is similar to B. luteus and takes its place in the 

 flora of the Pacific Coast; but the tubes are larger and the surface 

 is floccose-scaly. At Corvallis, Oregon, it is very abundant in 

 fir woods mixed with a few deciduous trees. It is also known 

 from Washington and California. 



7. BOLETELLUS MurriU 



Hymenophore annual, epixylous, centrally stipitate; surface 

 floccose-verrucose, yellowish; context light-colored, fleshy; tubes 

 angular, depressed, yellowish, covered with a veil ; spores oblong- 

 ellipsoid, smooth, ferruginous; stipe solid, white, not reticulate. 



I. BoLETELLUS Ananas (M. A. Curt.) MurriU 



Pileus convex to expanded, somewhat irregular, 5-10 cm. 

 broad; surface light- tan with a pinkish tint to pinkish-brown, 

 covered with a thick coat of conspicuous, imbricate, floccose 

 scales, which are reddish-flesh-colored fading to almost white; 

 margin thin, lacerate, appendiculate; context white or cream- 

 colored, changing to bluish when wounded; tubes plane in mass, 

 adnexed, bright- yellow or tawny -yellow, sometimes with a 

 pinkish tint, becoming greenish-blue when injured, mouths of 

 medium size, angular, edges thin; spores ellipsoid, longitudinally 

 striate, dark-brown, 16-18 X 6-8 ii; stipe 5-10 cm. long, 1-2 cm. 

 thick, cylindric, even, pure-white or very light brownish, some- 

 times tinged with pink, changing to dull-red when wounded, 

 solid or slightly hollow within; veil present in young stages, but 

 mostly clinging to the margin of the pileus, leaving only a slight 

 trace of an annulus in mature specimens. 



Frequent from North Carolina to Alabama and Mississippi, 

 growing parasitically on wounded pine trunks or about the base 

 of living pine trees. 



8. PULVEROBOLETUS MurriU 



Hymenophore annual, terrestrial, centrally stipitate; surface 

 of pileus and stipe clothed with a conspicuous sulphur-yellow, 

 powdery tomentum, which may be the remains of a universal 

 veil; context white, fleshy; tubes adnate, yellowish, covered 

 with a large veil; spores oblong-ellipsoid, ochraceous-brown; 

 stipe solid, annulate, not reticulate. 



I. PuLVEROBOLETUS Ravenelii (Berk. & Curt.) MurriU 



Pileus convex or nearly plane, 3-10 cm. broad, 1-3 cm. thick; 

 surface smooth, slightly viscid when wet, subfibrillose and 



