i68 APPENDIX. 



CCXVir. BOLETUS coriaceo perennis fubjlipitaius, pileo oblovgo tenuifub- 

 colaelus. latcnto, tubis brevijjimis, ports minutis rotundis. Boletus 



cdlceolus. Far. Bulliard, texte, P. 338. No. 21. 



SLIPPER BOLETUS. 



TAB, CLXVin. 



MOST fpecimens of this Boletus, which have fallen under my 

 notice, were furnifhed with a lateral footftalk, of an hard 

 tough fubftance ; in fome, however, it is very fhort, and the 

 plant may be faid in thefe to want it. 



The pileus, or rather the body of the plant, is of an oval or 

 oblong lhape, as reprefented on the plate. 



The fubftance is dry, tough, leathery, and white within ; the 

 upper as well as under furlace, while the plant is young, are alfo 

 white or milk-coloured. When of age changes to a reddiih 

 brown, and, at laft, to a fufcous black on the upper fide. 



The tubes adhere together, by their fides ; a portion of them 

 and of the pores, is a little magnified on the plate. 



Since engraving the plate, I have found an old fpecimen, very 

 rough on the furface, fomewhat ihaggy and teffilated, with fhort 

 irregular furrows ; is as firm and hard, almoft, as wood. 



I gathered it from the ftump of an elder tree, near Shibden- 

 Hall. 



