MYCOLOGIA 



Vol. Ill May, 191 i No. 3 



ILLUSTRATIONS OF FUNGI— VIII 



William A. Murrill 



Some time in May, in this latitude, depending upon the tem- 

 perature and rainfall, tiny mushrooms begin to appear on the 

 lawns and in the fields, and many of them reappear periodically 

 during summer and early autumn after each season of wet 

 weather. These species, as a class, are avoided by the beginner 

 in mycology and are puzzling even to experts. The accompanying 

 plate illustrates a number of them, in selected genera, drawn by 

 Mr. Volkert a year ago from the first specimens found, and repro- 

 duced natural size. Later in the season, the sporophores of some 

 of these species tend to grow larger, owing to the increased tem- 

 perature and the more active mycelium. 



Inocybe infida (Peck) Earle 

 Unsafe Inocybe 



Plate 40. Figure 1. X 1 



Pileus ovoid to campanulate, at length expanded, umbonate, 

 gregarious, 1.5-3 cm - broad; surface silky-scaly, shining, light 

 tawny-brown, sometimes paler, dark reddish-brown on the umbo, 

 often splitting at the margin ; lamellae free, crowded, pale-yel- 

 lowish to grayish-cinnamon ; spores ovoid, irregular, nodulose, 

 io-ii X 6-7 ju; stipe subequal, concolorous, pruinose, scurfy 

 above, 3-5 cm. long, 2-4 mm. thick ; veil white, evanescent, cling- 

 ing in delicate threads to the stipe and the margin of the young 

 pileus. 



[Mycologia for March, 191 1 (3: 45-95), was issued March 18, 1911] 



97 



