The Saprophytic Fungi of Eastern Iowa. 39 



solitary, sometimes in dense tufts and clusters at base of 

 stumps etc. It is consequently ver}' variable in size. The 

 veil hangs from the margin in thin webs and is evanes- 

 cent, as likewise the annulus. Under favoring circumstances 

 the plant grows rank, strong, and coarse grained. In dry sea- 

 sons plants are smaller, and often present the pileus deeply 

 checked with 'fissures runninjj in all directions. 



Si/dg en lis Trie hoi oina. 



Stem fleshy; gills with a sinus behind. Veil obsolete, or, 

 if present, flocose and adhering to the margin of the pileus. — 

 Berk. 



10. Agaricus personatus. — J^r. 



Pileus fleshy, convex, involute, then expanded, thick, smooth 

 and shining, pale blue or violet in color; stipe short thick, ta- 

 pering upwards, white solid; lamellae narrow; free, white or 

 bluish, crowded: veil evanescent. 



Height 2'-4'. Pileus 2'-^'. August. 



This, the only Tricholoma I have yet seen in our limits, is 

 very well marked. It might be confused with Cortinarms 

 violaceiis, which differs in the color of the spores (decidedly 

 brown), and in having the lamellae thick and deeply stained 

 with the accumulating fruit. 



Agaricus t err ens is also reported from the state. 



Subgenus Clitocybe. 



Stem elastic with a fibrous outer coat: lamellae decurrent 

 or acutely adate. — Berk. 



II. Agaricus infundibuliformis. — Schaeff. 



Pileus at first convex, then depressed, at length funnel- 

 shaped, brown; lamellae white, distinctly decurrent, narrow; 

 stipe paler than the pileus, smooth, even. 



Height 2 '-3'. Pileus 2'. June. 



Not common. 



