GENUS II. BOLETUS. 83 



BOLETUS petiolatus lateralis, pileo coriaceo pallide-luteo, mar- XCVII. 

 gine acuto, ports tenuijjimis. Agaricus fquamojus glaber. Uurelu. 

 Battarra, P. 68. T. 34. A. 



LATERAL BOLETUS. 



TAB. LXXX1II. 



npHE root in this Boletus is black, hard, and of a woody 

 -*■ fubftance. The ftem gradually increafes upwards, till it 

 laterally fpreads out into a pileus, of a circular figure, only de- 

 ficient on the fide where the ftem lofes itfelf in its fubftance ; 

 and in well grown fpecimens, the two oppofite margins on the 

 defective fide increafe, fo as to touch each other. 



The pileus from one to two inches diameter, flat, and quite 

 fmooth on the furface ; the margin gently waved in fome fpe- 

 cimens, in others plain, in both very thin and acute; the 

 colour on the upper fide is exactly like the leaves of trembling 

 poplar, when they turn yellow, and fall ; the fubftance much 

 refembles tanned neat's leather. 



The pores are round, and very minute, fo as not to be dif- 

 cerned by the naked eye in the largeft fpecimens. The tubes 

 are about a line in length ; when magnified a little, I found 

 them to be cylindrical, and their difpofition very regular and 

 beautiful. The colour of the pores is a little paler than that of 

 .the pileus. 



Specimens of this, I gathered on the flump of a fallen wil- 

 low tree, below JVoodbouJ'e, near the river Calder, in Auguft, 

 1787. I ' have feen old fpecimens elfewhere, of a dark dufky 

 brown colour, and of a fubftance as hard and firm almoft as 

 oaken wood. 



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