292 FUNGUS-FLORA. 



E. Tubes and openings of pores white or grey, sometimes 



becoming brownish. 



Boletus laricinus. Berk. 



Pileus 2-3 in. across, convex, dirty white with livid or 

 greenish stains, covered at first with dirty yellow or brownish 

 evanescent slime, usually with a few squamnles near the 

 margin, fle&h white, unchangeable ; tubes subdecurrent, 

 about -\ in. long, openings angular, compound, about ^V mm. 

 diameter, white then dingy olive-brown ; stem 1-2 in. long, 

 ^ in, or more thick, ringed, dirty white, reticulated above the 

 ring, often hollow towards the base ; spores dirty olive- 

 brown, fusiform, •11-14 X 4 /u.. 



Boletus laricinus. Berk., Outl., p. 230 : Cke., Ildbk., p. 251. 



On the ground under larches, &c. Pileus 2-3 in. broad, 

 dirty white, with livid stains, and sometimes adpressed, dirty 

 yellow fascicles of filaments, the remains of the slimj- ring ; 

 often deeply scrobiculate, covered with dirty yellow or brown- 

 ish slime, which gradually disappears. Flesh white, very 

 slightly tinged with yellow, not changeable. Tubes adnate 

 or subdecurrent, compound, each consisting of two or three 

 cells, their orifices angular, at first dirty white, with a tinge 

 of yellow, at length brownish from the spores. Stem 2 in. or 

 more high, .',— ?^ in. thick, nearly equal, reticulated above the 

 ring, and frequently much scrobiculated below, dirty white 

 like the pileus, stained with the spores, somewhat downy at 

 the base. Spores oblong, brownish clay-coloured. (Berk.) 



Boletus rubiginosus. Fr. 



Pileus 2-5 in. broad, convex, rather soft, pubescent, soon 

 becoming glabrous, reddish-brown, flesh tliick, white, un- 

 changeal)le ; tubes adnate, very slightly or not at all 

 shortened round the stem, openings angular, unequal, about 

 .\ mm. diameter, white, unchangeable; stem 2-3 in. long, 

 about 1 in. thick, thinner upwards, everywhere covered 

 witli ])rominent thin ridges arranged in a reticulated 

 milliner, solid, whitish, then more or less tinged with 

 yellow ; spores colourless, elongato-fusiform, 12 x 4 /x. 



lldltfm riihiqinosus, Fries, r)l)S. Myc. ii. ]). 245 ; Fries, 

 llym. Eur., p. '621. 



On the ground in beech woods. 



