MUSHROOM GROWING 



Polyporus furnishes a few edible species. 

 Thus P. sulphureus forms immense clusters 

 of sulphur yellow and orange bracket-like 

 sporophores on a variety of trees and stumps. 

 The family possesses no species so injurious 

 as the poisonous amanitas, yet a few species 

 of Boletus must be avoided. 



Boletus, Among the Polyporacece the 

 genus Boletus is by far the most important 

 in respect to furnishing edible species. 

 These plants are all characterized by a cen- 

 tral stalk, and a pileus often thick and 

 fleshy, with a layer of pores separable from 

 the general tissue of the sporophore. Many 

 species are large, often attaining a diameter 

 of six inches or more. The color of the cap 

 is predominantly red to orange, with pore- 

 bearing surface pale, yellowish, or orange. 

 In many species the flesh changes color rap- 

 idly when cut or bruised. The spores are 

 usually white, or chestnut brown in certain 

 species. The normal habitat is wooded 

 areas, and some species are apparently re- 



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