=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=--=Stipe= 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.

THE ROSY-SPORED AGARICS.

(The spores are rose color, pink, flesh or salmon color.)

=Stipe= central. 1

=Stipe= eccentric or none and pileus lateral. =Claudopus.= 149

=1=--=Pileus= easily separating from the stipe, gills free. 2

=Pileus= confluent with the stipe and of the same texture, gills attached, in some becoming almost free. 3

=2=--=Volva= present and distinct, annulus wanting. =Volvaria.= 140

=Volva= and annulus wanting. =Pluteus.= 138

=3=--=Stipe= fleshy to fibrous, margin of pileus at first incurved. 4

=Stipe= cartilaginous. 5

=4=--=Gills= sinuate. =Entoloma.= 143

=Gills= decurrent. =c.l.i.topilus.= 142

=5=--=Gills= not decurrent (or if so only by a minute tooth), easily separating from the stipe. 6

=Gills= decurrent, pileus umbilicate. =Eccilia.= 148

=6=--=Pileus= slightly convex, margin at first incurved. =Leptonia.= 147

=Pileus= bell-shaped, margin at first straight and pressed close against the stipe. =Nolanea.=

No species of Nolanea are described here.

THE BROWN-SPORED AGARICS.

(The spores are dark brown or purplish brown.)

=Pileus= easily separating from the stem; gills usually free. 1

=Pileus= continuous with the stem; gills attached. 2

=1=--=Volva= wanting, annulus present. (Psalliota Fr.) =Agaricus.= 18

=Volva= present, annulus wanting. =Chitonia.=

=Volva= and annulus wanting. =Pilosace.=

=2=--=Veil= present. 3

=Veil= wanting or obsolete. 4