414 FUNGUS-FLORA. 



squamulose pileus. The stem is not bulbous at the base, as 

 in Agaricm campestris, var. silvicola. 



Agaricus cretaceus. Fr. 



Pileus 34 in. across, campanulate then expanded, and the 

 margin sometimes upturned, naked, even, nearly smooth, or 

 rivulose, sometimes cracked into areolae at the disc, whitish, 

 or with a pale buff disc, flesh thin, soft ; gills free, broadest 

 in front and then nearly ^ in. broad, rather distant, for a 

 long time whitish, becoming blackish-brown with a tinge of 

 flesh-colour; stem about 3 in. long, in. thick, usually 

 slightly thickened at the base, smooth, whitish, sometimes 

 slightly flexuous, distinctly hollow, ring almost median, 

 simple, reflexed with the margin again ascending ; spores 

 5-6 x 3-5 /*. 



Agaricus cretaceus, Fries, Syst. Myc. i. p. 28 ; Cke., Hdbk., 

 p. 194 ; Cke., Illustr. pi. 524 (not of Bulliard). 



On rich pastures, &c. Distinguished by the whitish 

 pileus, distinctly hollow stem, and distant ring. 



Stem hollow, cavity stuffed with a cobweb-like substance ; 

 firm, 3 in. long, 3-6 lines and more thick, attenuated 

 upwards, even, glabrous, white, not spotted ; ring superior, 

 ample, reflexed, the margin erect, even, white. Pileus 

 fleshy, lentiform-globose when young, then convexo-ex- 

 panded, obtuse, 3 in. and more broad, dry, sometimes even, 

 sometimes with the cuticle broken up into deciduous squa- 

 mules, especially near the rivulose margin, altogether white. 

 Flesh thick, white, unchangeable. Gills free, at length 

 remote, veutricose, narrowest near the stem, crowded, per- 

 sistently white for a long time, brownish when old. (Fries.) 



Agaricus pratensis. Schaeff. 



Pileus 23^ in. across, ovoid then expanded, becoming 

 smooth or sometimes broken up into squamules more or less 

 concentrically arranged, whitish, then greyish, flesh thick in 

 the centre, thin towards the margin, white ; gills free, 

 rounded behind, about \ in. broad, greyish, then brown; 

 stem about 2 in. long, | f in. thick, base thickened, smooth 

 whitish, ring median, simple, usually deciduous ; stem 

 becoming more or less hollow ; speres elliptical, apiculate, 

 -6 x 3-5/t. 



