54 BULLETIN 1366, U. S. DEPARTMENT OF AGRICULTURE 



HEX — Continued. 



Ilex spp., holly, winterberry — Continued. 



R. ilicis-canadensis Schw., tar-spot. Me., Mich., Ind. 



R. velatum (Schw.) Fr., tar-spot. Miss. 



Septoria ilicifolia Cke. and Ell., leaf-spot. N. J. 

 /. opaca, American holly. 



Cercospora ilicicola Maub., leaf -spot. Tex. 



C. pulvinula Cke. and Ell., leaf-spot. N. J., Tex. 



Diplodia sp., foot-rot. Fla. 



Melampsoropsis ilicinum (Ell. and Ev.) Jack., rust. 



Phyllactinia corylea (Pers.) Karst., powdery mildew. 111. 



Phyllosticta ilicicola (Cke. and Ell.) Ell. and Ev., leaf-spot. N. Y., N. J. 



P. opaca Ell. and Ev., leaf-spot. W. Va., S. C, 



P. terminalis Ell. and Mart., leaf-spot. Miss. 



Rhytisma curtisii Berk, and Rav., tar-spot. Md., S. C, Ala., Tex. 



R. ilicis-canadensis Schw., tar-spot. W. Va. 



IPOMOEA. 



J. batatas, sweetpotato. 



Albugo ipomoeae-panduranae (Schw.) Sw., white-rust. General where sweet- 

 potatoes are grown. 



Botrytis cinerea Auct., gray-mold rot. N. J. 



Coleosporium ipomoeae (Schw.) Burr., rust. Miss. 



Corticium vagum Berk, and Curt., stem-rot. Frequent in sweetpotato States. 



Cystospora batata (Ell. and Hals.) J. A. Elliott, soil rot, pox. Middle Atlantic 

 and Gulf States, Ohio, Kans., Ark., Okla. 



Diaporthe batatatis (Ell. and Hals.) Harter and E. Field, dry-rot. N. J. to 

 Kans. and Tex. 



Diplodia tubericola (Ell. and Ev.) Taub., Java black-rot. General, Del. to 

 Kans., Ga., Tex. 



Fusarium batatatis Woll. and F. hyperoxysporum Woll., stem-rot. General in 

 sweetpotato States. 



F. oxysporum Schl., surface rot. N. J., Ala., Miss. 



Heterodera radicicola (Greef) Muell., root-knot. Southern States, Calif. 



Monilochaetes infuscans Ell. and Hals., scurf. General. » 



Ozonium omnivor'um Shear (Phymatotrichum omnivorum (Shear) Dug.), root- 

 rot. Tex. 



Phyllosticta batatas (Thuem.) Cke., leaf-soot. N. J. and Ohio to Kans. and 

 Tex. 



Plenodomus destruens Harter, foot-rot. N. J. to Iowa and southward, 

 Calif. 



Pythium sp., rootlet rot. N. Y., Del., Md., Va. and in States south and 

 west. 



Rhizopus nigricans Ehr., soft-rot, ring-rot. General as a storage rot. 



Sclerotinia sp., damping-off. N. J. 



Sclerotium bataticola Taub., charcoal rot. Frequent throughout county as 

 a storage rot. 



S. rolfsii Sacc, stem-rot. S. C. to Tex. 



Septoria bataticola Taub., leaf-spot. Iowa to Tex. and eastward. 



Sphaeronema fimbriatum (Ell. and Hals.) Sacc, black-rot. General in all 

 sweetpotato States. 



Trichoderma koningi Oud., storage rot. N. J., Del. 



Mosaic, undet. Fla., Miss., Ark., Tex., Kans. 



Mottle-necrosis (associated with Pythium sp.). N. J., D. C. 

 /. purpurea, morning-glory. 



Albugo ipomoeae-panduranae (Schw.) Sw., white-rust. Del., Va., W. Va., 

 Ga., Ala., Miss., Kans. 



Cercospora alabamensis Atk., leaf-spot. Ala. 



C. ipomoeae Wint., leaf -spot. Ala. 



C. viridula Ell. and Ev., leaf-spot. N. J., N. C, Nebr. 



Coleosporium ipomoeae (Schw.) Burr., rust. Miss. Valley States, Ala., Tex. 



Heterodera radiciola (Greef) Muell., root-knot. 



Puccinia crassipes Berk, and Curt., rust. Okla. 



