Studies and Illustrations of Mushrooms: I. 



17 



100, the dark lines representing the long heaps of spores where they 

 fell from the surfaces of the gills. 



Brief Description of Agaricus campestris. 



The common mushroom {Aga?'icus campestris) grows in lawns, 

 pastures and similar places. It averages 5-8 cm. (2-3 inches) in 

 height, the pileus being 5-12 cm. in diameter. 



Pileus. — The cap or pileus is convex or more or less expanded, the 

 surface being nearly smooth, or more or less silky hairy, these hbrils 



100. — Agaricus campestris, Spoie Mint. 



sometimes being collected into triangular scales. The color of the 

 surface is usually white, but varies to light brown, while the flesh is 

 white. 



Gills. — When the plant is very young the gills are first white, but 

 soon become pink, and later purple brown or dark brown from the 

 numerous purple colored spores on the surface. The gills are free 

 from the stem, and rounded on their inner ends. 



