78 An HISTORY of FUNGUSSES. 



XCl. BOLETUS acaulis puhinatus /avis, ports oblongis. Hud/on 

 alius. 626. — Boletus acaulis pulvinatus Icevis, ports oblongis et ro- 



tundis. LightjoQt Scot. 1036. — An poliporus Jiffllis convexo- 



planusfarinojus. Hall. Hljl. 2287 f 



WHITE BOLETUS. 



TAB. LXXVIII. 



'TpHIS plant adhered by its bafe to the root of a poplar tree, 

 ■■- which was in a decaying flate. 



It is convex on the\ipper fide, and about an inch in thick - 

 nefs near the bafe, growing thinner to the margin ; — the convex 

 part near the root is of a reddifh colour, the reft of a pure 

 white, and appears to the eye as if it were rubbed with chalk. 

 A portion of the furface, when magnified, appeared to be co- 

 vered with a fhort velvety dawn, which glittered like filver; 

 — when the white dawn or powder was rubbed off, the furface 

 was of a pale duiky flefh colour. The margin is lobed, curled, 

 and undulated, in a very plealing manner. The fubftance of 

 the plant, within, is of a pale duiky flefh colour, tough, and 

 elaftic. — One of the fpecimens before me, meafures fix inches 

 from fide to fide, and near four from the bafe to the fore mar- 

 gin ; another is little more than half that meafure. 



The tubes are about two lines in length, they adhere toge- 

 ther by their fides, are of a tough coriaceus fubftance, and 

 variable in fize 'and figure. The pores very unequal; fome 

 round, others oblong or angular, fome are long and waved, fome 

 large, others fmall ; but all of equal height. 



This fpecimen grew on the root of a fallen poplar, at Copley- 

 Hall, near Halifax \ it grew near the furface of the ground, and 

 furrounded, with its fubftance, the grafles and weeds that grew 

 in its way. 



