EXPERIMENT STATION BULLETINS. 



201 



The Half-Morel. (Morchella Semililera.) 



As its name implies, this morel has the lower half of the pilens free 

 from the stem. The pileus is mostly conical in shape with longitudinal 

 ridges and pits. The white stem is somewhat mealy or scurfy, hollow 

 and often swollen at the base. This fungus is usually a little later than 

 the two-spored morel, grows in similar places and is not usually common. 



Figure 10. The half-free Morel (Morchella semllibera). (a) cap; (b) stem, in section, about 

 natural size; (c) an ascus containing eight spores; (d) a spore. Highly magnified. 



— (Original.) 



The Narrow Cap Morel (M. ayigusticeps ) and the Conical Morel (Mor- 

 chella Conica). 



These two morels are so nearly alike in many cases as to make it very 

 diflBcult to separate them satisfactorily. In both species the cap is con- 

 siderably longer than broad, in some cases very narrow and pointed, in 

 others broadly conical. The ridges extend from base to apex, being con- 

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