Agaricaceae 



LIMACINA (/imas, a slug or snail, slimy). Page 61. 



Trichoioma. Cuticle of pileus viscid when moist, innately fibrillose or scaly, but not 

 lacerated ; flesh of pileus thick, firm ; margin almost naked. 



* Gills not discolored, nor becoming reddish. 



** Gills discolored, usually spotted with reddish-brown. 



GENUINA. Page 67. 



Cuticle of the pileus never moist or viscid ; torn into downy or floe- 

 cose scales. Flesh soft, not water-soaked ; margin involute and slightly 

 downy at first. 



* Gills not changing color, nor spotted with red or black. 



** Gills becoming reddish or gray, the edge at last generally with 

 reddish or black spots. 



RiGlDA (rigeo, to be stiff). Page 74. 



Pileus rigid, hard, somewhat cartilaginous when fleshy, very fragile 

 when thin, cuticle rigid, granulated or broken up when dry into smooth 

 scales, not torn into fibrils. Young specimens occur which are fibrillose 

 from the veil, not from laceration of the cuticle. 



* Gills white or pallid, not becoming spotted with red or gray. 

 ** Gills becoming reddish, grayish or spotted. 



SERICELLA {sericeus, silky). Page 74. 



Pileus first slightly silky, soon becoming smooth, very dry, neither 

 moist, viscid, water-soaked, nor distinctly scaly; rather thin, opaque, 

 absorbing moisture, but is the same color as the gills. Stem fibrous, by 

 which the smaller species resembling Collybia may be distinguished. 



* Gills broad, rather thick, somewhat distant. 

 ** Gills narrow, thin, crowded. 



B. PILEUS EVEN, SMOOTH, NOT DOWNY NOR SCALY, NOT VISCID. 



In rainy weather moist ; when very young pruinose (but rarely con- 

 spicuously) from the universal veil. Flesh soft and spongy or very 

 thin when it is water-soaked. 



GUTTATA (gutta, a drop). Page 76. 



Pileus fleshy, soft, fragile, marked with drop-like spots or rivulose. 

 Appearing in spring, rarely in autumn. 



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