IOWA ACADEMY OF SCIENCES. 161 



SOME CERCOSPORAE OF MACON CO., ALABAMA. 



BY GEORGE W. CARVER. 



The wide distribution and the economic importance of the 

 Cercospora in this county has prompted the writing of this 

 paper. This list by no means represents all of the species of 

 this county, as no special effort has been made to collect Cer- 

 cospora only. These collections were made while passing 

 hurriedly to and from other duties. With few exceptions, the 

 species were collected in the immediate vicinity of Tuskeegee. 



The exceedingly warm and humid atmosphere, together 

 with the very remarkable fluctuations of climate and the rapid 

 development of fungus diseases under these favorable con- 

 ditions, has made the study doubly interesting. It is quite 

 apparent that from year to year, by careful co-operation, much 

 valuable information will be brought to light. None of our 

 imperfect fungi have been worked over more carfully than the 

 Cercosporeae. I have consulted the following works, Ellis 

 and Everhart*, whose work includes all of the North American 

 species known to them when their work was written. Keller- 

 man and Swingle t for the descriptions of several new species. 

 There are also descriptions of other species in the same jour- 

 nal. Full descriptions of many Alabama species occur in 

 Prof. George F. Atkinson's paper on the Cercosporeae;]: of 

 Alabama. Saccardo§ in his great work on fungi described all 

 of the species known to him. Descriptions of new and 

 interesting southern species were made by Underwood and 

 Earle. || Numerous local lists of fungi also record species from 

 various localities. The following are some of the more impor- 

 tant: Trelease,! Davis, ^ Webber,'^ Tracy and Earle,' Hal- 



* Jour. Myc. 1 :17, 33, 49, 61. 4:1. 

 + Jour. Myc. 5:74. 



* Some Cercospora from Alabama, from' the Journal of EUsha Mitchell. Sci. Soc. 

 8: Separate. 



§ Sylloge Fungorum. 

 II Bull. Ala. Agr. Exp. Sta. 80:141. 

 t Wis. Acad. Scl., Arts and Letters 6:106. 



1 A supplementary list of Parasitic fungi of Wis. Acad. Scl., Arts and Letters 9:168, 

 2 Webber Cat. Fl. Neb. 



3Tracy and Earle Bull, of Miss, Agr. Ex. Sta. 34:116-120 Bulletin 36:150-153. 

 11 



