64 Proceedings of the Ohio State Academy of Science 



lindrical throughout, narrowed at the base, granular or smooth, 

 even or ribbed, white or light colored, interior more or less papil- 

 late or granular. Paraphyses colorless often stout. Asci cylin- 

 drical, long. Spores hyaline 8, smooth, elliptic or oblong- elliptic. 

 Growing on the ground in spring. Edible. 



KEY TO SPECIES. 



a — Pileus partially free from the stipe semilibera 



a — -Pileus attached to stipe. 



b — ■ Stipe granular crassipes 



b — Stipe not granular. 



c — • Pileus rounded esculenta 



c — Pileus conical esculentaconica 



Morchella esculenta (L.) Pers. Syn. Fung. 618. 1801. 

 Phallus esculenta L. Sp. PI. 4: 1178. 1753. 



Solitary or in groups, 8-12 cm. high. Stipe frequently 

 bulbous, white, smooth, or granulose, often somewhat wrinkled 

 about equal to the pileus in length, 1.5-2.5 cm. thick. Pileus very 

 irregular in shape, ribs branching in any direction and thick with 

 quite broad edges and these usually white, pits deep, varying 

 in size and shape, brown or brownish-gray. Hymenium and 

 hypothecium almost colorless. Paraphyses filiform, septate, 

 stout. Asci long cylindrical. Spores elliptic, 15-23 mic. long 

 and 8-12 mic wide, hyaline. 



Very common on the ground in spring, most often under 

 trees. 



Coll. Freda M. Bachman, April 20, 1908. W. G. Stover, 

 April 29, 1908. H. W. Fink, L. O. Overholts, May 2, 1908. 



-\-Morchella esculenta conica Fr. Sys. Mycol. 2 : 7. 1822. 



Pilus conical, pits more or less rectangular and usually quite 

 narrow, ribs extending longitudinally with transverse branches. 

 Spores oval, hyaline, 15-17 mic. long and 9-12 mic. wide. 



Very similar to Morchella esculenta (L.) Pers. and found 

 with it. 



Coll. Freda M. Bachman, April 18, 1907. 



