CLASSIFICATION 369 



P. picipes. — Pileus 2-4 in. across, centre or side more or less 

 depressed, pliant, yellowish with the centre or altogether chestnut ; 

 pores rounded, decurrent ; stem up to i-| in, long, almost central 

 or excentric, black up to the pores, velvety. 



Differs from P. varius in the even pileus and velvety stem. 



On trunks, especially willow. 



P. varius. — Cap 2-5 in. across, depressed at point of origin of 

 stem, pliant, often irregular, smooth, wrinkled, bay-brown or paler ; 

 pores decurrent, rounded, pale, then cinnamon ; stem excentric or 

 lateral, about i in. long, smooth, greyish black downwards. 



Differs from P. picipes by the smooth stem and wrinkled cap. 



On trunks and stumps, especially ash. 



P. elegans. — Pileus 2-4 in. across, often angular, smooth, even, 

 all of one colour, pale ochre to dull orange, shining ; tubes minute, 

 more or less decurrent ; stem up to i| in. long, excentric or lateral, 

 abruptly black below, rooting. 



Distinguished by the almost flat pileus, even, and absence of bay 

 or chestnut-colour. 



On stumps and trunks, chiefly birch. 



P. petaloides. — Pileus 2 in. or more across, very thin, wrinkled, 

 smooth, pliant, dark chestnut ; pores decurrent, minute, white ; 

 stem lateral, ascending, compressed, smooth, whitish, expanded 

 at the base. 



Distinguished by the lateral stem and dark chestnut pileus. 



On old stumps. 



2. Pileoli numerous, springing from a stout trunk or tubercle, which 

 often breaks up into branches. 



P. ttmbellatus. — Forming dense tufts 6-12 in. across. Very much 

 l^ranched, pileoli irregularly circular, depressed, |-2 in. across, 

 smoky or dingy yellow, pores minute, white ; stems whitish, uniting 

 to form a thick, root-like knob. 



Numerous branches springing from a centre, and depressed 

 pileoli, stamp the present species. 



Near and on stumps in woods. 



P. frondosus. — Tufts |-i ft. across, much branched, pileoli 

 very numerous, |-2 in. across, smoky grey, wrinkled, lobed and 

 incurved ; stems white, growing into each other, pores very small, 

 white. 



Tufts up to I foot high, pilei very numerous, imbricated or 

 variously grown together. 



On stumps, roots and trunks. 



P. intybacens. — Tufts 1-2 ft. across ; very much branched, 

 fleshy, rather brittle, pileoli numerous, yellowish or greyish brown, 

 wavy, branches joined into a very short, stem-like base ; pores 

 whitish brown. Smells like mice. 



On trunks and stumps. 

 2 B 



