CLASSIFICATION 257 



Differs from P. terrigena in the absence of an olive tinge on the 

 gills. 



Among grass. Sohtary or tufted. 



P. mycenoides. — Cap about \ in. across, everywhere striate, rusty, 

 tan when dry ; gills narrow, rusty ; stem about i| in. long, rusty, 

 ring white. 



Among moss in swamps. 



P. pumila. — Cap about ^ in. across, even, ochraceous, rarely 

 brownish cinnamon ; gills adnate, pallid yellowish ; stem 1-2 in. 

 long, yellow, ring only forming a zone round the stem. 



Among grass, moss, etc. 



P. molliscoria. — Cap 2-3 in. across, convex, then plane, at length 

 depressed, even, smooth, soft like kid leather, tawny yellow, edge 

 paler, dry, shining ; flesh very thin, yellow like that of the stem ; 

 gills adnexed, ventricose, crowded, rusty ; stem about 3 in. long, 

 silky, punctately squamulose at the apex, pale yellow, ring distant, 

 broad, yellow, then rusty from the spores. 



Habit and appearance of P. prcBcox ; differing in the yellow 

 colour and bright ferruginous spores. 



On the ground. Gregarious. 



P. dura. — ^Cap about 2 in. across, rather compact, convexo-plane, 

 smooth, becoming cracked, edge even, tawny tan, becoming 

 fuscous ; gills adnate, striato-decurrent by a tooth, broad, livid, 

 then rusty brown ; stem i|-2 in. long, stout, thickest at the mealy 

 apex, somewhat ventricose or irregular, whitish, ring apical, torn. 



On the ground in gardens, etc. 



2. Growing on trunks, on or around stumps, and on branches. 



* Stem white or whitish. 



P. pudica. — Cap 1-3 in. across, smooth, even, dry, white or tinged 

 tawny ; gills whitish, then tawny ; stem 1-2 in. long, often curved, 

 white, ring spreading. 



On trunks of elder and other trees. Singly or tufted. 



P. leochroma. — Cap ii-2j in. across, soon plane, tawny ; gills 

 adnate, cinnamon-colour ; stem 3-4 in. long, whitish, ring tawny. 



Cap sometimes yellowish white at the edge, passing into a tawny 

 disc, becoming cracked. 



On stumps, etc. Tufted. 



P. capistrata. — Cap i|-2 in. across, rather viscid, pale dingy 

 yellow ; gills slightly decurrent, pallid, then darker ; stem 3-4 in. 

 long, squamulose, whitish, ring white, spreading. 



Known by the dingy yellowish white, slightly viscid cap. 



On old elm stumps, etc. 



P. cegerita. — Cap 2-4 in. across, fleshy, soon plane, wrinkled, 

 tawny, edge whitish ; gills crowded, fuscous ; stem 4-6 in. long, 

 fibrillose, white, ring white, thick or tumid. 



On trunks of poplar, ash, etc. Tufted, 



