A.NALVIICAL Kl.^ s. •_'•",:{ 



III Margin of pileiis at first iruolute, pileus tlat or nearly so, 

 siiiiiewhat lleshy (some plants rather tough and tending 



t^uird the consistency of Marasmiiis. ) C()il\bia. (,( 



Margin of the pileus at first straight, pileus slightly bell- 

 shaped, thin Mycena. yj 



Gills usually free, pileus deeply plicate so tliat tin- gills are 

 split where they are attaciied to the pileus. pileus mem- 

 branaceous, very tender but not diffluent Hiatula. 



11 I'lants where bruised exuding a milky or colored juice. Lactarius. 114 

 Plants not exuding a juice where bruised Kussula. 125 



12 (iills Jecurrent, dichotomous, edge blunt Cantharellus. 128 



(Jills not decurrent, plants parasitic on other inu-^hroonis. Nyctalis. 



13 —Edge of gills not split into two laminiv 14 



Edge of gills split into two laminie and re\olute Schiz(tpti>lluni. 156 



!■< Plants leathery, either fleshy, membranaceous, or gelat- 

 inous 1; 



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

 I.S— Stipe separate from the pileus (hymenophore), easily 



separating 16 



Stipe continuous with hymenopiiore 17 



16 Plants tough and flesiiy. membranaceous or leathery. . Marasmius. 1 50 



Plants gelatinous and leathery Mcllomyces. 



17— Edge of the gills acute i.s 



Edge of tlie gills obtuse 19 



18 Edge of gills usually serrate Lentinus. . 1 54 



Edge of gills entire Panus. ... 1 54 



19 Gills dichotomous Xerotus. 



Gills fold-like, irregular Trogia. 157 



There are only .1 few rare species of Hiatula. Nyctalis, Heliomvcesand Xero- 

 tus in the United States. None are here described. 



THE OCHRE-SPORED AGARICS. 



(The spores are yellow ish 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 \ein- 



like reticulations Paxillus. 16s 



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

 Lniversal veil arachnoid, distinct from the cuticle of the 



pileus, gills powdery from the spores Corlinarius. i^u 



2— Stipe central . \ 



Stipe eccentric or none Crcpidotus. 15Q 



3^Volva or annulus present on stipe. ... 4 



Voiva and annulus w.anting. ... ; 



4 -Stipe with an annulus I'holioia. 1 ;o 



Stipe with ,1 vol\a. Locellina t not reported in U. b.). . . 



5 Gills free from the stem Pluieolus. 



Gills attached ... 6 



ft (iills not dissolving nor becoming powdery. . 7 



