Part 4, 1915] AGARICACEAE 
Odor or taste neither strong nor disagreeable. 
Stipe slender, long-radicating; pileus red. 
Plants not as above. 
Stipe strigose-tomentose, at least in the lower 
part. ‘ 
Pileus striate or plicate. 
Stipe nearly smooth and dark above. 
Stipe white-pubescent above. 
Cystidia present. 
Cystidia absent. 
Pileus smooth, not striate. 
Some of the lamellae subdecurrent, darker 
in dry plants. 
Lamellae not decurrent, usually palles- 
cent. 
Stipe glabrous above. 
Stipe not glabrous above. 
Lameliae rather broad, adnexed. 
Lamellae narrow, adnate. 
Cystidia present. 
Cystidia absent. 
Stipe not strigose-tomentose. 
Margin of pileus little, if at all, striate. 
Stipe thickened upward, base tuberculose. 
Stipe not thickened upward, not tuber- 
culose. 
Lamellae broad. 
Lamellae narrow. 
Stipe long. 
Stipe short. 
Margin of pileus striate or plicate. 
Stipe long, even. 
Lamellae broad, ventricose, ciliate. 
Lamellae narrow, not ciliate. 
Stipe short, thickened upward. 
Pileus subfieshy to membranous; stipe smaooth, pruinose, or subtomentose; 
lamellae squarely adnate or decurrent. 
Pileus white. 
Lamellae decurrent. 
Pileus papillate. 
Spores 104 or more long. 
Spores less than 10, long. 
Lamellae close. 
Lamellae distant. 
Pileus not papillate. 
Lamellae broad. 
Stipe bulbous; growing upon soil and buried twigs; 
spores 7-9 » long. 
Stipe increasing upward; growing upon wood or other 
vegetable debris; spores 10-12» long. 
Lamellae narrow. 
oer rr and stipe with minute resinous particles or 
airs. 
Lamellae and stipe without resinous particles or hairs. 
Lamellae not decurrent. 
Cystidia present. 
Cystidia absent. 
Spores irregularly angular. 
Spores not angular. 
Odor strong. 
Odor not strong. 
Stipe hollow, base swollen above and contracted to 
a point below. 
Stipe of uniform thickness. 
Stipe very short, upon herbaceous plants in 
swamps. 
Stipe not very short. 
Pileus neither distinctly striate nor plicate, 
Stipe pallid. 
Stipe becoming reddish. 
Pileus distinctly striate or plicate. 
Lamellae narrow, adnexéd. 
: Lamellae broadly adnate. 
Pileus not white. 
Lamellae decurrent. 
Pileus yellow to ferruginous. 
Pileus neither yellow nor ferruginous. 
Stipe glabrous above. 
Stipe not glabrous above. 
Lamellae not decurrent. 
102. 
eK RE 
263 
. elongatipes. 
. Semihirtipes. 
. castaneicolor. 
. biformis. 
contrarius. 
.. semihirtipes. 
M 
M 
. M. castaneicolor. 
M 
M 
_M 
so 
KE & SE XE 
és spongiosus. 
. velutipes. 
. dichrous. 
. subtomentosus. 
. subnudus. 
. rubrophyllus. 
. subpilosus, 
M 
. M. subnudus. 
M 
. dichrous. 
. M. magnisporus. 
. papillatus. 
. languidus. 
. vialis. 
. VM. magnisporus. 
- TeSinNOSUS, 
. Salignus. 
. Squamula, 
. nigripes. 
« perforans. 
- pracacutus. 
. caricicola. 
. opacus, 
. ramulinus. 
. phyllophilus. 
: BOS, 
. lomentosipes. 
alienus. 
. contrarius, 
