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GENUS II. .BOLETUS. 83
BOLETUS petiolatus lateralis, pileo coriaceo pallide-luteo, mar- xcvrr
gine acuto, ports tenuiflimis. Agaricus fquamofus glaber. uterans
Battarra, P. 68. T. 34. A.
L A T E R A L BOLETUS.
T A B . LXXX1II.
npHE root in this Boletus is black, hard, and of a woody
x fubftance. The ftem gradually increafes upwards, till it
laterally fpreads out into a pileus, of a circular figure, only deficient
on the fide where the ftem lofes itfelf in its fubftance;
andjn well grown fpecimens, the two oppofite margins on the
dgf€itive 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 fpecimens,
in others plain, in both very thin and acute j 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 discerned
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 ftump of a fallen willow
tree, below Woodhoufe, near the river Calder, in Auguft,
1787. I have feen old fpecimens elfewhere, of a dark duiky
brown colour, and of a fubftance as hard and firm almoft asoaken
wood. «
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