38 MUSHEOOMS. 



veil often causes a part of it to remain on the 

 cap in the shape of warts or scales. These 

 may disappear as the plant grows older, and 

 are sometimes washed off by a heavy rain. 



THE TUBES OE PORES. 



There is a group of fungi called Polyporei, 

 which have tubes or pores instead of gills. 

 They are placed under the pileus just as the 

 gills are situated, and contain the spores. The 

 length of the tubes varies. The mouths or 

 openings are also of different shapes and sizes. 

 They are sometimes round, and at other times 

 irregular. The color of the mouths is often 

 different from the tubes, and changes when ma- 

 ture. The mouths, too, are sometimes stuffed 

 when young. The attachment to the pileus is 

 to be noted. They may be free or easily de- 

 tached, depressed around the stem or fastened 

 to it (adnate.) 



