THE DISCOMYCETES OF EASTERN IOWA. 253 



Plants stipitate, 1 to 3 inches high by 1 inch broad; pileus 

 globose or spreading, smooth, dark seruginous green; stem 

 long, flattened or twisted, light colored, yellowish, covered with 

 minute hair-like structures; asci clavate; sporidia 8, guttuiate 

 and granular within, 20 by 5 microns; paraph yses filiform. 



Habitat — On soil in woods among leaves, summer and fall, 

 Iowa City. 



This species is recognized by its dark green pileus and light 

 colored stem. The light yellowish stem distinguishes it from 

 the very closely related species, Leotia lubrica Pers. in which 

 the stem and pileus are both green. 



Several plants were examined by Dr. E. J. Durand of Cor- 

 nell University and reported to be the species named above. 



Family II— HEI,VEI,I,ACE^. 



Plants fleshy, saparated into stem and pileus. Stem sharply 

 distinguished from the receptacle, for the most part hollow, 

 fragile. Receptacle pileate covered outside with the hymen- 

 iurn, which is always exposed, composed of asci and well de- 

 veloped paraphyses. Asci operculate. Spores elliptical, 

 colorless or light yellowish. 



Genus I— M ORCHELLA Dillenius. 



Fleshy, stipitate, fragile, with pileate receptacle. Stem 

 cylindrical, hollow. Receptacle sharply distinguished from 

 the stem and pitted. Hymenium covering the outer surface 

 of the receptacle. Asci 8-spored cylindrical, operculate. 

 Sporidia elliptic, i-celled. Paraphyses cylindrical or clavate. 



Two species have been collected in this part of the state. 

 Plants of the same species vary greatly in external form but 

 these differences do not seem to be definite enough to mark 

 distinct species. 



KEY TO THE SPECIES. 



a — Receptacle adnate at the base with stem . . M. conica. 



a — Receptacle free at the base M . hybrida. 



