184 Natural History Bulletin. 



cussed later. Besides, in our Iowa species of Paxillus the 

 spores are whitish or yellow. 



Subgenus Pholiota. 

 Stipe annulate and confluent with the hymenophore. 



25. Agaricus adiposus, Fr. 



Pileus yellow, compact, tirm, convexo-plane, viscid when 

 moist, covered with seceding scurfy, brown or reddish scales, 

 somewhat concentrically arranged; lamellae, broad, adnate, at 

 first yellow, then stained with the ferruginous spores; stipe 

 firm, stuffed or solid (nearly), concolorous, somewhat scaly 

 and slightly bulbous at the base; annulus inconspicuous. 



Height 3 '-5'. Pileus 2 '-3'. Stipe ^'. Spores elliptic, 

 .o04x-oo8 mm. September-October. 



This, one of our most beautiful species, is not rare in all our 

 wooded region. The plants are generally ccespitose and more 

 or less distorted by mutual interference. They spring out 

 horizontally from some log or stump, at first golden-yellow 

 flecked with brown, and exceedingly sticky, at length paler, 

 smooth and shiny when dry. Not edible; the taste that of 

 the rotten wood from which the fungus springs. 



26. Agaricus tuberculosus, Fr. 



Pileus dull yellow, fleshy, convexo-plane, obtuse, dry, cov- 

 ered with innate, appressed, scurfy scales; lamellae broad, ser- 

 rulate, 3-ellow, inclining to cinnamon; stipe concolorous, seal}'- 

 or fibrillose, hollow, short and bulbous; annulus sub-mem- 

 branaceous and deciduous. 



Height I '-2'. Pileus i^'-3'. Spores elHptic, .005 x. 009 

 mm. June. 



Rare. Resembles somewhat the preceding species, is lig- 

 natile and somewhat coespitose, but is smaller, not brightly 

 colored, and is never glutinous. Inedible. 



27. Agaricus umcolor, Wxhl, FI. Dan. 



Pileus brown, ochraceous, somewhat fleshy, campanulate. 



