45 



Acrrti'U'ns (Tricholomiv) Ilclx'Ioinn; Peck. 



Pileus broadly conical or subcampanulate, obtiiso, thin, ]iygro])liannuH, 

 striatulato brown and dark on the disk when moist, grayish when dry ; himcllac 

 broad, rounded behind and deeply emargiuate, yellowish ; stem equal, hollow, 

 smooth, pallid ; spores .00028' x .00016'. 



Plant 1' high, pileus 6" broad, stem scarcely 1" thick. 



Ground in woods. Worcester. July. 



This plant closely resembles some species of the subgenus Heb- 

 eloma, but the color of its spores forbid its reference to that sub- 

 genus. 



Agaricus (Clitoej be) coniiexus. Peck. 



Pileus thin, subumbonate, clothed with a minute appressed silkiness, white, 

 the margin sometimes faintly tinged with blue; lamellae crowded, narrow, 

 white inclining to yellowish ; stem equal or tapering downwards, solid, whitish. 



Plant 3'-3' high, pileus 2'-3' broad, stem 2" thick. 



Ground in woods. Croghan. September. 



The lamellae are not strongly decurrent and sometimes terminate 

 abruptly, hence it might easily be mistaken for a Tricholoma. The 

 margin of the pileus is sometimes marked with slight ridges as in 

 Ay. latcrarius. The odor is weak but aromatic and agreeable. 



Agaricns (Clltocybe) albissinius, Peck. 



Pileus convex or expanded, dry, smooth, soft, pure white ; lamellae crowded, 

 short-decurrent, white, some of them forked at the base ; stem equal, smooth, 

 solid, white. 



Plant growing in rings, 2'-3' high, pileus 2'-3' broad, stem 2"-3" thick. 



Ground in woods. Croghan. September. 



The pure white color and soft texture is retained in the dried 

 specimens. 



Agaricus (Clitocybe) maenlosns, Peck. 



Pileus centrally depressed, smooth, marked with numerous watery s}>ots 

 when moist, having slight short radiating ridges on the margin; lamellae 

 crowded, narrow, long-decurreut, pallid or yellowish, some of them forked ; 

 stem slightly thickened at the base, smooth, stuffed or hollow, colored like the 

 pileus. 



Plant 2'-3' high, pileus 1.5'-2' broad, stem 2"-3" thick. 



Ground in woods. Croghan. September. 



The spots of the pileus resemble those of Aff. warmorctis. They 

 generally disappear as the plant Itocomes dry. 



