LINN&AN ARTIFICIAL SYSTEM. 105 



spunk or boletus, is another genus which grows horizontally, but 

 differs from the last, in having pores instead of gills on the under 

 surface. The phallus or morell is known by a smooth surface under- 

 neath, and a kind of net-work on the upper part. The lycoperdon 

 or pufTball is of a roundish form, and filled with a mealy powder, 

 supposed to be the seeds. The tuber or truffle used for food, has no 

 root, but grows beneath the surface of the ground ; it is round and 

 solid, and of a rough exterior. 



