OSMOTIC GROWTH 135 



stem of these osmotic fungi is formed of bundles of tine hollow 



KlG. 46. — Osmotic growths in the form of shells. 



fibres, while the upper surface of the cap is sometimes smooth, 

 and sometimes covered with small scales. The lower surface 



Fig. 47. —Capsular osmotic growth. The capsule lias been broken to show 

 the interior structure. 



of the cap shows traces of radiating lamella?, which are 

 sometimes intersected by concentric layers parallel to the outer 



