(^(3 HULLETIX N. Y. STATE MUSKUM. 



The species is closely related to B. gvanulatus, from which it differs 

 especiiilly in its copious gluten, darker-colored pileus, shorter stem, 

 and in the almost entire absence of granules from the tubes and 

 stem. When present they are limited to the upper part of the stem 

 and are extremely minute and inconspicuous. It occurs very late in 

 the season. B. viscosus Frost is a synonym. 



Boletus baclius Fr. 



Bay Boletiis. 



Pileus convex, even, soft, viscid or glutinous when moist, some- 

 what shining when dry, taiony or cJiestnul color, flesh whitish tinged 

 with yellow, bluish next the tubes ; tubes rather long and large, 

 angular, adnate, sinuate-depressed, whitish-yellow, becoming tinged 

 with green ; stem nearly equal, rather long, even, paler than the 

 pileus, broivmsh-prumose ; spores oblong, .0004 to .0005 in. long, 

 .00016 to .0002 broad. 



Pileus 2 to 3 in. l)road, stem 2 to 4 in. long, 3 to 5 lines thick. 



Woods. Rensselaer and Lewis counties. August and Septemljer. 



The dimensions of the spores are derived from the American plant. 

 They are smaller than those given by Karsten for the European 

 plant. We have observed no greenish hue to the tubes nor l)luish 

 color to the flesh, and to this extent our specimens are doubtfid. 

 The plant needs further examination. 



Boletus piperatus Bull. 



Peppei\y Boletus. 



Pileus convex or nearly plane, smooth, slightly/ viscid when moist, 

 yellowish, cinnamon or subferruginous, flesh white or yellowish, taste 

 acrid, peppery ; tubes rather long and large, angular, plane or con- 

 vex, adnate or subdecurrent, reddish-ferruginous, generally more 

 highly colored than the pileus : stem slender, nearly equal, tawny- 

 yellow, hright-yellow at the base ; spores ferruginous-brown, subfusi- 

 foi-m, .00035 to .00045 in. long, .00016 broad. 



Pileus 1 to 3 in. broad, stem 1.5 to 3 in. long, 2 to 4 lines thick. 



Woods and open places. Common and variable. July to October. 



The species is readily known by the peppery taste of the flesh, and 

 the bright yellow coloi- of the base of the stem. The pileus is some- 

 times rimose-scaly or rimose-areolate. It is less viscid than most other 

 species of this section. The color of the spores is similar to that 

 of the sjjores of B. Elbensis. B. ferruginatus Batsch. is a s}'non\in. 



