Agaricaceee 



ciitocybe. * Pileus gray or brownish. 



* Pileus violet or reddish. 



* Pileus becoming yellowish. 

 **** Pileus greenish, becoming pale. 



* Pileus white, becoming shining white. 



Distinguished from white hygrophanous species and white species of 

 Paxillus. 



DlFFORMES (irregularly shaped). Page 94. 



Pileus fleshy in the center, thin at the margin, at first umbonate, then 

 expanded and depressed, irregular. Gills unequally decurrent, longer 

 in some places than in others, sometimes rounded on one side of the 

 stem or only reaching it as in Tricholoma. Stem somewhat cartilagi- 

 nous externally, but fibrous. 



Cespitose, often grown together at base, variable in form, sometimes 

 solitary. 



INFUNDIBULIFORMES (funnel-shaped). Page 98. 



Pileus becoming thin from the fleshy center to the margin, at length 

 funnel-shaped or deeply umbilicately depressed in the center. Stem 

 spongy, externally fibrous. Gills deeply and equally decurrent from 

 the first. Pileus often becoming discolored or pallid, not hygrophanous. 



* Pileus colored or becoming pale, the surface (at least under a lens) 

 innately flocculose or silky, bibulous, not moist. 



* Pileus colored or pallid, smooth, moist in rainy weather. 



* Pileus shining whitish, with scattered superficial flocci or becom- 

 ing smooth. 



B. PILEUS FLESHY-MEMBRANACEOUS. 

 Flesh thin, soft, watery, hygrophanous. 



CYATHIFORMES (cup-shaped). Page 104. 



Flesh of pileus thin, consisting of two separable plates, disk not com- 

 pact, hygrophanous, depressed then cup-shaped ; gills at first adnate 

 then decurrent, descending, straight. Color dingy when moist. 



ORBIFORMES (round-shaped). Page 109. 



Pileus somewhat fleshy, hygrophanous. convex then flattened or de- 



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