206 BRITISH FUNGI 



Distinguished by the veiy thin, crowded, adnate gills. 

 On rotten trunks. 



P. fimbriatiis. — Cap more or less plane, then depressed, the edge 

 becoming broken up into lobes and crenate, even, whitish, hygro- 

 phanous and almost hyaline, 2-3 in. across ; gills adnate, thin, 

 narrow, much crowded, forked ; stem more or less excentric, 

 compressed, downy, not rooting, about i in. long. 



On trunks. Gregarious or tufted. 



P. riithce. — Cap more or less fan-shaped or tongue-shaped, upper 

 stratum gelatinous, rather hispid, whitish or yellowish buft', edge 

 thin, often striate, i|-3 in. across ; gills ending definitely, anas- 

 tomosing behind, white, then reddish ; stem either distinctly 

 lateral or the cap marginate behind, short, rather stout, reddish, 

 hispid. 



Differs from P. pantoleucus by the gills being determinate — ending 

 definitely and not decurrent — and anastomosing behind. 



On sawdust, etc. 



P. lignatilis. — Cap rarely regular, usually more or less excentric, 

 often reniform, convex, then plane, obtuse and often umbilicate, 

 floccosely mealy, edge incurved, then wavy, dingy white, 2-6 in. 

 across ; gills adnate, much crowded, narrow, white ; stem some- 

 times 2-3 in. long, sometimes only 3-4 lines long, always slender, 

 curved, whitish, everywhere downy, base rooting, rarely central, 

 sometimes quite lateral. 



Very variable, shape inconstant, substance thin, tough, strong 

 smell of meal, dingy w^hitish. 



On trunks, rotten wood, etc. Densely tufted, rarely solitary. 



P. circinatus. — Entirely white. Cap orbicular, horizontal, rather 

 thick, pliant, convex, then flattened and more or less discoid, 

 covered with a whitish silkiness, about 3 in. across ; gills slightly 

 decurrent, crowded ; stem equal, central or slight!}^ excentric, 

 commonly straight, smooth, elastic, base rooting. 



Regular, entirely white, smell weak, pleasant. 



On rotten birch wood, etc. Solitary. 



*** Veil absent ; gills decurrent ; stem distinct and almost vertical. 



P. pantoleucus. — Entirely white. Cap excentric, spoon-shaped 

 or somewhat elliptical, even, smooth, marginate and depressed 

 behind, edge even, entire ; gills decurrent, crowded, not forked nor 

 anastomosing behind ; stem ascending, solid, not rooting, not i in. 

 long. 



Constantly white ; \cry excentric. 



On trunks. 



P. sapidus. — Tufted, or se\eral caps ai)pearing to spring from a 

 branched stem. Cap fleshy, excentric, irregular, con\ex or obtusely . 

 gibbous, then depressed, smooth, white or brownish, 1-3 in. across ; 



