IOWA DISCOMYCETES HI 



laria from which the plants can be distinguished only on micro- 

 scopic characters; asci clavate, 8-spored; spores elliptical to 

 fusoid, 1-septate, becoming brown. 



One species of the genus found to be very common in Iowa. 



Karschia taveliana Rehm, Rabenh. Krypt. Fl. I 3 : 1223. 1896. 



Plate 36, f. i. 



Plants scattered or closely crowded, at first concave, becoming 

 plane with the margin often slightly elevated, black, rounded in 

 form or when crowded becoming irregular often in dense masses ; 

 asci clavate, 8-spored; spores irregularly crowded, elliptical or 

 with ends slightly narrowed. 1-septate, brown, often a little 

 curved ; 14 to 18 by 4/x ; paraphyses a little enlarged upward and 

 forming an epithecium. 



On old wood especially butternut (Juglans), Iowa City and 

 Mt. Pleasant. 



This species has been listed in previous reports as Karschia 

 lignyota but according to Dr. Rehm it is distinct from that spe- 

 cies although apparently close to it. The plants have been found 

 to be very common in Iowa on partially decayed wood but seem 

 to show a decided preference 'for butternut. 



MYCOLECIDEA Karst., Medd. Soc. Fauna Fl. Fenn. 16: 27. 



1888. 



External characteristics the same as those of the genus Patel- 

 laria; asci clavate, 8-spored; spores 3 to many-septate, brown; 

 paraphyses branched and enlarged upwards forming an epithe- 

 cium, brownish. 



One species collected in Iowa which is the type of the genus as 

 founded by Karsten. 



Mycolecidea triseptata Karst., Medd. Soc. Fauna Fl. Fenn. 

 16: 27. 1888. 



Plate 40, f. i. 



Patellaria triseptata Sacc, Syll. Fung. 8 : 787. 1889. 

 Leciographa triseptata Morgan, Jour. Myc. 8 : 180. 1902. 

 Plants scattered, superficial, patellate, .5 to 1 mm. in diameter; 



