Report of the Botanist. 91 



Dedicated to Professor James Hall, a most earnest pro- 

 moter and eminent patron of the natural sciences. 



*71. Agaricus poltchrous Berlc. 



Pileus fleshy, convex, smooth, viscid, yellow, the disk red- 

 dish or brownish, the margin sometimes wavy ; lamellae close, 

 emarginate and decurrent-toothed, yellow, then ferruginous ; 

 stipe firm, solid, equal, often curved, yellow ; plant grega- 

 rious or cJBspitose. 



Height l'-2', breadth of pileus 9"- 18". 



Ground and rotten wood in pastures and woods. Very 

 common. August-November. 



The veil is webby, fugacious. 



Subgenus — Naucoria. 

 Stem cartilaginous externally ; margin more or less convex ; 



pileus inflexed. — Berk. Outl. 

 The spores are ferruginous, or brownish-ferruginous. The 

 color of the pileus is some shade of yellow. The stipe is not 

 distinctly annulate, but sometimes a slight spore-stained band 

 marks the place of the obsolete annulus. 



Synopsis of the Species. 



Pileus umbonate a, 



a. Stem hollow, tapering toward the base 



a. Stem hollow, equal 73. 



a. Stem solid 74, 



Pileus not umbonate b 



b. Stem hollow c 



c. Pileus hygrophauous 75. 



c. Pilevis not hygrophanous 76. 



b. Stem solid or stuffed d 



d. Stem solid, margin of pileus recurved 77 



d. Stem containing a pith 78 



72. Agaeicus yerxalis n. sp. 



Pileus thin, fleshy, convex, then a little depressed, with a 

 deflexed margin, umbonate, hygrophanous, dull yellow, darker 

 when moist ; lamellae narrow, attached, cinnamon-color ; stipe 

 long, flexuous, striate-sulcate, hollow, tapering downward, 

 white-villous at the base, brownish. 



Height 2', breadth of pileus 8"-12", stipe 1" thick. 



On rotten wood. Greenbush. May. 



73. Agaricus Ligxicola n. sj). 



Pileus thin, convex, umbonate, smooth or slightly fibrillose, 

 hygrophanous, watery cinnamon and the margin striatulate 



