Porpliyrosporae 



A. faba'ceus Berk. relating to beans. PileuS 4-5 in. across, Agaricus. 

 thin, almost submembranaceous, umbonate, conical when young, be- 

 coming nearly plane as it expands, white, viscid when moist; epidermis 

 smooth, tough, feeling like fine kid leather, turning yellow when bruised. 

 Stem 34 in. high, Yz in. thick, white, smooth, with the exception of 

 a few fibrilla, equal except at the base. Veil large, at first covering 

 the gills and connecting the margin with the stem, white, externally 

 floccose. Gills crowded, very thin, not ventricose, free, brown when 

 young, then darker brown, at length almost black like the dark part of 

 a bean flower. A fine species allied to A. arvensis. When young it 

 has a peculiar but not unpleasant smell. On the ground, amongst dead 

 leaves in open woods. Waynesville, September 10, 1844. Hooker's 

 London Jour, of Botany, 1847. 



Described by Berkeley from specimens collected by Thomas G. Lea, 

 in the vicinity of Cincinnati. 



On ground among old leaves in woods. Common. Pileus 3-4 in. 

 broad. Stem 3-4 in. high. Spores brown, nucleate on one side, 

 small, 5.5/1 long. Morgan. 



This is among the most delicious species for the table. Fresh speci- 

 mens have a distinct taste and odor of peach kernels or bitter almonds 

 which is nearly lost in cooking. Am. Jour. Science and Arts, 1850. 

 Curtis. 



Ohio, Lea, Morgan; North Carolina, Curtis; South Carolina, Rave*- 

 net; Massachusetts, Sprague. 



*** 



Gills at first whitish. 



A. arven'sis Schaeff. belonging to cultivated ground. HORSE 

 MUSHROOM, PLOWED-LAND MUSHROOM. (A. Georgii Sow., A. pra- 

 tensis Scop., A. edulis Krombh., A. exquisitus Vitt.) Pileus at first 

 convex or conical, bell-shaped then expanded, at first more or less floc- 

 cose or mealy, then smooth white or yellowish. Flesh white. Gills 

 close, free, generally broader toward stem, at first whitish, then pinkish, 

 finally blackish-brown. Stem equal or slightly thickened toward the 

 base, smooth, hollow or stuffed with a floccose pith ; ring rather large, 

 thick, the lower or exterior surface often cracked in a radiate manner. 



Plant 2-5 in. high. Pileus 3-5 in. or more broad. Stem 4-10 

 lines thick. 



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