148 



A TEXT-BOOK OF BOTANY 



other grasses, distorting them and producing the excrescent 

 growths from which the ergot 

 is obtained (Fig. 136). 



FIG. 137. Two kinds of cup-fungus. 

 After LINDAU. 



Most attractive, however, 



FIG. 139. The common edible morel, the 

 depressions in the surface being lined 

 by a layer of asci. After GIBSON. 



FIG. 138. A cup-fungus growing on a 

 spruce. After REHM. 



is the group of sac Fungi 

 with spore-fruits shaped 

 like saucers, cups, funnels, 

 flat disks, etc.; for the 

 lining, made up of a layer 

 of the spore - containing 

 sacs, is often some brilliant 

 shade of red, yellow, or 

 brown (Figs. 137 and 138). 

 The scarlet-lined cups of 

 certain forms are often 

 seen on decaying logs, 

 stumps, etc.; and in the 

 morels the spore-fruits get 

 so large and fleshy that 

 they are used as one of the 

 most delicate of the edible 

 mushrooms, although they 

 are not mushrooms at all 

 (Fig. 139). 



