LIST OF DISEASES OF ECONOMIC PLANTS 7 



Rocky Mountain States: 



Northern — Montana (Mont.), Wyoming (Wyo.), Idaho. 

 Southern — Colorado (Colo.), New Mexico (N. Mex.), Utah, Nevada (Nev.), 

 Arizona (Ariz.). 



Pacific coast: Washington (Wash.), Oregon (Oreg.), California (Calif.). 



Pacific Northwest: Washington (Wash.), Oregon (Oreg.), Idaho. 



Southwest: Arizona (Ariz.), New Mexico (N. Mex.), California (Calif.). 



Cotton Belt: North Carolina (N. C), South Carolina (S. C), Georgia (Ga.), 

 Alabama (Ala.), Tennessee (Tenn.), Mississippi (Miss.), Louisiana (La.), 

 Oklahoma (Okla.), Arkansas (Ark.), Texas (Tex.). 



Spring-wheat area: North Dakota (N. Dak.), South Dakota (S. Dak.), Minne- 

 sota (Minn.). 



East of Great Plains: All States east of and including the eastern part of North 

 Dakota (N. Dak.), South Dakota (S. Dak.), Kansas (Kans.), Oklahoma (Okla.), 

 Texas (Tex.). 



>^^^^^^SS^x^^^SsS 













Fig. 4.— Geographic areas used in the list: Pacfic coast, northern Rocky Mountain States, 

 southern Rocky Mountain States, Middle Western States, and Gulf States 



It is hoped that all who use this list will report any errors or omis- 

 sions observed and will send specimens and records of any diseases 

 not reported here or from regions not specified in this list, in order 

 that later editions may be made more complete and accurate than 

 this one. 



C. L. Sheak, 

 Senior Pathologist in Charge of Plant-Disease 



Survey and Pathological Collections. 



LIST OF AUTHORITIES 



The following is a complete list of the authorities used in the index, 

 with the abbreviations of the names occurring most frequently: 



Aderh. = R. Aderhold. 



Alb. = Johannes Baptiste von Alber- 



tini. 

 Allesch. = Andreas Allescher. 

 Aim. = J. V. d' Almeida. 

 Am. Auct. — of American authors. 



Anderson, H. W. 

 Anderson, P. J. 

 Appel = O. Appel. 

 Arcangeli, G. 

 Arn. = G. Arnaud. 

 Arth. = J. C. Arthur. 



