PURPLE-BROWN-SPORF.D AGARICS. 



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Ajjaricus (Psalliota) arvensis Schactt. Edible. — Tht- tiekl mushroom, 

 or horse mushroom, y^i^iirhiis iiivi'iisls, grows in fields or pastures, 

 sometimes under trees and in borders of woods. One form is often 

 white, or yellowisli white, and often shows the yellow color when 

 dried. The plant sometimes occurs in the form of a fairy ring as 



Figure 19. — Agaiicus silvicola. While to cream color, or yellow stain.s. 

 (Natural size.) Copyright 1900. 



shown in Fig. 18. It is i;-i2 cm. high, the cap from 5-15 cm. broad 

 and the stem 8-15 mm. in thickness. 



The pileus is smooth, quite thick and firm, conve.x to expanded. 

 The gills are first white, then tinged with pink and finally blackish 

 brown. The stem is stout, nearly cylindrical, hollow, bulbous. The 

 veil is double like that of .-Igiiiuiis pLuomyccs, the upper nr inner 



