KEY TO THE MORE IMPORTANT GENERA OF FAMILY AGARICACEAE 521 



Stipe central, typically 0.5-7.0 mm. in diameter; spores never amyloid. 



Marasmius 

 Fruiting body typically woody or semiwoody. 



Lamellae splitting along the fedges. Schizophyllutn 



Lamellae arranged concentrically around the stipe. 



Cydomyces 

 Lamellae more or less poroid. Daedalea and Lenzites^ 



Fruiting body typically soft, or if membranous, rather fragile ; not usually 

 reviving when remoistened. 

 Stipe eccentric; lateral, or wanting. 



Spore print white to tinged lilac or creamy-vinaceous. 



Pleurotus 

 Spore print pinkish. 



Spores longitudinally striate; stipe lacking or rudimentary. 



Octojuga 



{Clitopilus in part) 

 Spores as above; stipe well developed. Clitopilus 



Spores angular. Rhodophyllus^^ 



Spore print yellow to rusty brown; lamellae separating easily from the 

 pileus; the decurrent lamellae sometimes anastomosing to become 

 poroid near the stipe. Paxillus 



Spore print as above; lamellae not separating easily from pileus. 



Crepidotus 

 Stipe typically central. 



Spore print white to creamy or pale creamy vinaceous. 



See below Key to Leucosporae 

 Spore print pink to flesh color. See below Key to Rhodosporae 



Si^ore print yellow to rusty brown or earth brown. 



See below Key to Ochrosporae 

 Spore print cocoa color, chocolate color or purplish to black. 



See below Key to Melanosporae 



Key to the Centrally Stipitate, Soft, Putrescent Genera of Leucosporae 



Stipe slender, if more than 5 mm. thick then with a distinct cartilaginous cortex. 

 Stipe somewhat horny in consistency; gills decurrent to adnate; fruiting bodies 

 marasmoid in appearance but spores amyloid. 



Xeromphalina 

 Not as above. 



Cap margin typically straight, or if incurved then gills not truly decurrent; 

 if margin of pileus incurved and pileus brown to gray to blackish, 

 then pileus with a differentiated hypoderm. 



Mycena 

 Cap margin strongly incurved or inroUed and gills typically decurrent. 



Omphalina 

 (Omphalia of many authors) 

 Cap margin strongly incurved and gills typically adnate to adnexed; pileus 

 lacking a differentiated hypoderm. 



^ These three genera, Cydomyces, Daedalea, and Lenzites, are usually included in 

 Family Polyporaceae. 



" Includes several other genera with similar spores. 



