310 STUDIES OF AMERICAN FUNGI. 



13 Edge of gills not split into two laminae 14 



Edge of gills split into two laminae and revolute. . . . Schizophyllum. 136 

 14 Plants leathery, either fleshy, membraneous, or gelat- 

 inous 15 



Plants corky or woody (placed by some in Polyporaceae). Lenzites. 

 15 Stipe separate from the pileus (hymenophore), easily 



separating 16 



Stipe continuous with hymenophore .17 



16 Plants toagh and fleshy, membranaceous or leathery. . . Marasmiiis. . 130 



Plants gelatinous and leathery. Heliomyces. 



17 Edge of the gills acute 18 



Edge of the gills obtuse 19 



18 Edge of gills usually serrate Lentinus. . . 134 



Edge of gills entire Panus. . . .134 



19 Gills dichotomous Xerotus. 



Gills fold-like, irregular ....." Trogia. . . .137 



There are only a few rare species of Hiatula, Nyctalis, Heliomyces and Xero- 

 tus in the United States. None are here described. 



THE OCHRE-SPORED AGARICS. 



(The spores are yellowish-brown or rusty-brown.) 



Gills not separating readily from the pileus i 



Gills sometimes separating readily from the pileus, forked 

 or anastomosing at the base, or connected with vein- 

 like reticulations I?axillus. . . 165 



1 Universal veil not arachnoid (i.e., not cobwebby). . . .' 2 



Universal veil arachnoid, distinct from the cuticle of the 



pileus, gills powdery from the spores Cortinarius. . 161 



2 Stipe central. . . ; 3 



Stipe eccentric or none. Crepidotus. . 159 



3 Volva or annulus present on stipe 4 



Volva and annulus wanting 5 



4 Stipe with an annulus Pholiota. . .150 



Stipe with a volva. Locellina (not reported in U. S.) . . 

 5 Gills free from the stem Pluteolus. 



Gills attached. . 6 



6 Gills not dissolving nor becoming powdery .7 



Gills dissolving into a gelatinous or powdery condition, 



not diffluent as in Coprinus Bolbitius. . . 163 



7-SUpe fleshy. 8 



Stipe cartilaginous or sub-cartilaginous 10 



8 Gills somewhat sinuate 9 



Gills adnate or decurrent Flammula. . .156 



9 Cuticle of the pileus silky or bearing fibrils Inocybe. . .158 



Cuticle of pileus smooth, viscid Hebeloma. . .157 



10 Gills decurrent. . Tubaria. . .159 



Gills not decurrent 11 



11 Margin of pileus inflexed. Naucoria. . . 153 



,,^ Margin of pileus straight, from the first Galera. . . .155 



No species of Pluteolus are here described. 



