404 FUNGUS-FLORA. 



III. INFUNDIBULIFORMES. 



Pileus becoming thin towards the margin from the fleshy 

 disc, at length entirely infundibuliform or the centre deeply 

 umbilicately depressed, Stem spongy, externally fibrous. 

 Gills descending, deeply and equally decurrent from the first. 

 Pileus often becoming discoloured or pale, but not hygro- 

 phanous. 



* Pileus coloured, or growing pallid, superficially (at 

 least under a lens), innately flocculose or silky, absorbing 

 the moisture, hence not moist. 



** Pileus coloured or pallid, glabrous, moist in rainy 

 weather. 



*** Pileus shining white, with scattered superficial flocci, 

 then almost glabrous. 



Group B. Flesh of pileus thin, truly hygrophanous, soft, 

 watery. 



IV. CYATHIFORMES. 



Flesh of pileus thin (consisting of two separable sheets), 

 disc not compact, hygrophanous, depressed then cup-shaped ; 

 gills adnate at first, then decurrent, descending, straight. 

 Colour dingy when moist. 



V. ORBIFORMES. 



Pileus somewhat fleshy, hygrophanous, convex then 

 flattened or depressed, polished, not squamulose nor mealy ; 

 gills plane, horizontal, crowded, thin, adnate or with a 

 decurrent tooth. Colour dingy or watery, becoming pale. 



* Gills greyish or olive. Pileus at first dark. 

 ** Gills whitish. Pileus becoming pale. 



VI. VERSIFORMES. 



Pileus thin, convex then deformed, tough, more or less 

 squamulose or furfuraceous ; gills adnate, broad, rather thick, 

 for the most part distant and powdered with white. 



* Pileus squalid or brownish with dark squamules. 

 ** Pileus bright, all one colour. 



