Boletus POLY FOR ACE^E 329 



times attacked by a parasitic mould, Hypomyces chrysosperiitus, and then 

 not edible. 



1506a. B. rugosus Fr. (from the wrinkled stem; n/gir, a wrinkle) <z b. 

 P. pulvinate, even, glabrous, dry ; marg. naked, brown. St. 

 somewhat hollow, costato-rugose, slightly scabrous, somewhat 

 ventricose, almost equal, paler than P. T. free, ivory, with a 

 faintly brownish shade. Po. round, minute. Flesh changing 

 from white to brown or sometimes black. 



Autumn. 2 x 4! X if in. Sowerby's t. 421 does not agree with his 

 original drawing, and the section behind is from another drawing, not of 

 this species. 



1507. B. duriuseulus Schulz. ex Fr. (from the harsh and rough stem ; 



duriusculuS) somewhat harsh and rough) a b. 



P. globose to pulvinate, smooth, viscid when moist, whitish- 

 tawny, dull chestnut, olivaceous, yellowish-brown or vinous- 

 umber. St. ventricose, attenuato-rooting, whitish or yellowish, 

 densely brown or grey punctato-squamulose. T. adnexo-free, 

 white then yellowish or yellow to olive-brownish. Po. bright 

 yellow. Flesh white, becoming rose-colour, coppery-red, 

 rosy- or red-slate or violet-greyish. 



Edible. Woods. Aug.-Oct. 3! X 6J x l in. 



1508. B. cruentus Vent, (from the change of colour in the flesh to 



blood-red ; cruor, gore) a b. 



P. convex to plane, smooth to rugulose, brown-yellowish or 

 olive, salmon-red or vinous where bruised. St. clavate, 

 attenuate to a rooting base, longitudinally scabrous, yellowish- 

 white or yellow below and orange above. T. adnate, pale 

 yellow. Flesh pale yellowish or pale sulphur changing to 

 rose or vinous, darker at base of St. 



Odour fetid. Under beeches. Aug. 3i X 3^ X ij in. 



i. Hyporhodia. 



1509. B. felleus Bull, (from the bitter taste ; fel, gall) ab c. 



P. pulvinate to expanded or slightly depressed, at first slightly 

 mealy, then smooth, even, pale umber, clouded darker. St. 

 clavate, brown-reticulate above, paler than P. T. long, adnate 

 to adnexo-rounded. Po. angular. Flesh white, more or less 

 changing to salmon. 



Said to be poisonous. Woods, fir, beech. July-Dec. 4 X 4 X i in. 



1510. B. alutarius Fr. (from the colour of the pileus ; aluta, tanned 



leather) a b. 



P. pulvinate to expanded, velvety then glabrous, umber-yellowish, 

 not dark, clouded slightly darker. St. clavate, somewhat even, 

 rugulose above, colour as P. T. short, sinuato-adnate, clouded 

 brownish. Po. round. Flesh yellowish-white, almost un- 

 changeable. 



Taste watery, mild. Woodland pastures ; rare. Oct. 2| x 3! X f in. 



