IOWA DISCOMYCETES 123 



Apothecia densely gregarious, or occasionally scattered, small, 

 .5 to 1 mm. long, roundish, mostly lying parallel -with each other, 

 opening with a longitudinal cleft ; asci cylindrical, 8-spored ; 

 spores very small, hyaline. 1-septate, and constricted at the sep- 

 tum, 7 by 3/i,. 



On old wood, common. 



Quite distinct, in the small roundish apothecia and the very 

 small much constricted spores. Ellis makes G. microsporium Sacc. 

 identical with this species. Probably common and widely dis- 

 tributed. 



GLONIELLA Sacc, Syll. Fung. 2 : 765. 1883. 



Apothecia erumpent. oblong or linear, carbonaceous, black, 

 with a longitudinal cleft; asci 4 to 8-spored; spores elongated, 

 fusoid. 2 to many-septate, usually 3-septate, hyaline. 



One species of the genus collected in the state. 



Gloniella ovate (Cooke) Sacc, Syll. Fung. 2: 765. 1883. 

 Hysterium ovatum Cooke, Gre^nllea 11 : 107. 1883. 



Plants gregarious, becoming superficial, ovate, obtuse, black, .5 

 to 1 mm. in length, longitudinally striated, lips for the most part 

 closed; asci cylindrical to elavate, 8-spored; spores 15 to 18 by 

 S/x, hyaline, becoming 3-septate. 



On oak wood, Mt. Pleasant. 



The species was collected in considerable quantity on old wood 

 near Mt. Pleasant. The 3-septate character of the spores was at 

 first overlooked but close examination shows them to be 3-sep- 

 tate at maturity, the middle septum being formed first. 



HYSTEROGRAPHIUM Corda. Ic Fung. 5 : 34. 1842. 



Plants erumpent. sessile, elongated or elliptical, obtuse or 

 subacute, mostly simple, opening with a narrow, elongated cleft, 

 black, carbonaceous : asci elavate. 8-spored : spores 1 to 2-seriate, 

 elliptical or ovate, obtuse, becoming muriform, brown. 



Only three species of this genus collected which seem distinct, 

 but others doubtless occur in the state. 



