14S 



A TEXT-BOOK OP 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. 



Flo. 138. A cup-fungus growing on a 

 spruce. After RKHM. 



Most attractive, however, 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 



FIG. 139. The common edible morel, the 

 depressions in the surface being lined 

 by a layer of asci. After GIBSON. 



are not mushrooms at all 

 (Fig. 139). 



