276 FUNGUS-FLORA. 



Finally, I have collected specimens in Epping Forest 

 liaYing the pileiis and incurved stem dingy tan-coloiir, tubes 

 at first yellow, then dingy cinnamon. 



Boletus duriusculus. Schulz. 

 Pileus 2-0 in. across, hemispherical, minntely velvety, 

 viscid when moist, varying in colour from pale brown, 

 through dingy chestnut, to umber-brown, often becoming 

 cracked in an areolate manner when dry, interstices paler ; 

 flesh thick, white or tinged yellow, when cut becoming red- 

 dish copper-colour ; tubes -h-^ in. long, shortened round the 

 stem and free, openings about ^ mm. across, often compound, 

 irregularly angular, bright yellow ; stem 4-7 in. long, fusi- 

 form, thickest part l|^-2 in. across, situated below the middle, 

 yellowish, rough with blackish points, which are sometimes 

 arranged in a subreticulate manner, apex sometimes more or 

 less grooved, solid, flesh of upper part becoming coppery like 

 the pileus; spores elongato-cylindrical, pale umber, 14-lG x 



5—6 fj.. 



Boletus duriusculus, Schulzer, Icon. Sel. Hymen. Hung., 

 p. 51, t. xxxiii., fig. 1 ; Fries, Hym. Eur., p. 515. 



In woods. Esculent and very delicious. Allied to Boletus 

 scaler, but distinguished by the bright yellow tubes and the 

 very firm flesh, which turns coppery-red when exposed to 

 the air ; this colour eventually changes to a dingy greyish- 

 violet. Also allied to Boletus porphjrosporus. 



Boletus pruinatus. Fr. 

 Pileus li-o in. across, convex, becoming expanded, rigid, 

 dry, purplish-bay or dark cinnamon with a red tinge, covered 

 with an umber-colourcd bloom, flesh rather thin, white, 

 becoming indistinctly greenish or bluish sometimes; tubes 

 about I in. long, ojienings minute, rounded, yellow; stem 

 about 2 in. long, | in. thick above, rather ventricose towards 

 the base, even, smooth, yellow, more or less streaked with 



red. 



Boletus 2^ruinatu8, Fries, Bolet., p. ; Stev., Brit. Fung., 



p. 174. 



In grassy ground under trees, &c. Solitary, or often more 

 or less clustered, with somewhat the habit and appearance of 

 certain forms oi Boletus cJirysenteron, hut distinguished by the 



