REPORT OF THE STATE BOTANIST I914 55 



Stipe short, neither spongy nor thick- 

 ened at base 

 Lamellae not dark in dry plants. . 13 M . d i c h r o u s 

 Lamellae becoming brown or 



reddish 10 M. rubrophyllus 



Plants smaller, pileus rarely 2 cm broad 

 Stipe white or entirely covered with a 



white tomentum 39 M . olneyi 



Stipe not entirely white or covered with a 

 white tomentum 



Pileus umbonate 16 M. umbonatus 



Pileus not umbonate 



Odor or taste strong or disagreeable 

 Lamellae annulate-adnexed; pileus 



umbilicate and striate i4M.foetidus 



Lamellae not annulate-adnexed ; 

 pileus not umbilicate; odor of 



onions 2 M.prasiosmus 



Odor or taste neither strong nor dis- 

 agreeable 

 Stipe slender, long-radicating; pileus 



red iSM.elongatipes 



Plants not as above 



Stipe strigose-tomentose, at least 

 in the lower part 

 Pileus striate or plicate 

 Stipe nearly smooth and dark 



above 17 M. semihirtipes 



Stipe white-pubsecent above. 18 M. biformis 

 Pileus smooth, not striate 

 Some of the lamellae subde- 



current, darker in dry plants 19 M. contrarius 

 Lamellae not decurrent, 

 usually pallescent 



Stipe glabrous above 17 M. semihirtipes 



Stipe not glabrous above 

 Lamellae rather broad, 



adnexed 12 M. spongiosus 



Lamellae narrow, adnate. 20 M. velutipes 

 Stipe not strigose-tomentose 

 Margin of pileus little, if at all, 

 striate 

 Stipe thickened upward; base 



tuberculose 13 M. dichrous 



Stipe neither thickened up- 

 ward, nor tuberculose 



Stipe long 8 M. subnudus 



Stipe short 10 M. rubrophyllus 



Margin of pileus striate or 

 plicate 



Stipe long, even 8 M. subnudus 



Stipe short, thickened upward 13 M. dichrous 



