54 NEW YORK STATE MUSEUM 
spores white, smooth (angular in M. nigripes) (Schw.) Fr. 
elliptic, rarely globose when mature, usually more or less obliquely 
apiculate, maturing slowly and unequally so that it is often difficult 
to find mature spores in dried plants. The plants usually grow upon 
vegetable matter, grass, leaves, twigs, bark, wood etc., but very 
seldom upon soil. 
Key to Species 
I Pileus fleshy or subfleshy, 1 cm or more broad; stipe more or less tomen- 
tose or hairy, at least below; lamellae free or adnexed. Some large plants 
with nearly smooth stipe are placed in this section. 
ileus witttes vere tae ets oes ee eee oe 
Pileus not white, sometimes pallid in dried 
plants 
Plants large, pileus 2 cm or more broad 
Lamellae crowded 
Plants with odor and taste strong of 
onions 
SpOresrs mally yee cslarcte eile «oye clare ore rate 
Spores; a2=14> ¢ ‘lone... 2. aes ea os 
Plants with neither odor nor taste of 
onions 
Stipeysmoothrabovien-crncece crc nic cen 
Stipe more or less tomentose through- 
out 
Lamellae free, remote; stipe en- 
lancedtatithemapexeeen -eeeeer 
Lamellae adnexed; stipe not en- 
larged at the apex 
Stipe long and twisted; pileus 
wustially spallescemt--e)- eco 
Stipe not long and twisted; pileus 
DRO Wllu ferrets sists whe aeierevot sie Gs 
Lamellae not crowded 
Taste strong and acrid; lamellae usually 
becoming reddish 
Piles purple ss stele ie cre lela oe netaenete 
Pileus not purple 
bamellactbroadeenn once 
Lamellae narrow 
Siipewmloncra. acusterccr eerie 
Stipe nshort se 2s6 een oe esis 
Taste neither strong nor acrid 
Lamellae free, usually growing in 
lawns OL erassy places. 4c. teiaere ier 
Lamellae adnexed, growing in woods 
Stipe spongy, thickened at base..... 
6M. 
3M. 
.phyllophilus 
.polyphyllus 
.prasiosmus 
fasciatms 
confluens 
. archiropius 
min ltt homlans 
.iocephalus 
> Pie O Maes 
.subnudaus 
.trubrophyllus 
.caryophylleus 
.spongiosus 
