

LIST OF DISEASES OF ECONOMIC PLANTS 33 



CATALP A— Continued. 



Catalpa sp., catalpa — Continued. 



Microsphaera alni vaccinii (Schw.) Salm., powdery mildew. General east 

 of Great Plains. 



Ozoniwn omnivorum Shear {Phymatotrichum omnivorum (Shear) Dug.), root- 

 rot. Tex. 



Phyllactinia corylea (Pers.) Karst., powdery mildew. S. C, Ohio, Ind., 111. 



Phyllosticta catalpae Ell. and Mart., leaf -spot. General east of Great Plains. 



Polyporus catalpae Schrenk, brown butt-rot. Mass. 



Polystictus versicolor (L.) Fr., yellowish wood-rot. Mass., Ohio, Ind., Nebr. 



Thielavia basicola (Berk, and Br.) Zopf, black root-rot. Ohio. 



Mosaic, undet. Md. 



CELASTRUS. 



C. scandens, American bittersweet. 



Cercospora melanochaeta Ell. and Ev., leaf-spot. N. Dak., Nebr., Kans. 

 Microsphaera alni (Wallr.) Wint., powdery mildew. Wis. 

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

 Phyllosticta celastri Ell. and Ev., leaf -spot. W. Va. 

 Ramularia celastri Ell. and Mart., leaf-spot. General. 



CELTIS. 



Celtis sp., hackberry, sugarberry. 



Cylindrosporium celtidis Earle, leaf-spot. Ala. 



C. defoliatum Heald and Wolf, leaf-blight. Tex. 



Ozonium omnivorum Shear {Phymatotrichum omnivorum (Shear) Dug.), root- 

 rot. Tex. 



Phleospora celtidis Ell. and Mart., leaf -spot. Mass., Mo., Kans. 



Phoradendron Jlavescens (Pursh) Nutt., mistletoe. Tex., Ind., Ariz. 



Phyllosticta celtidis Ell. and Kell., leaf-spot. East of Great Plains; N. Mex. 



Pseudoperonospora celtidis (M. B. Waite) Wils., downy mildew. D. C. 



Ramularia celtidis Ell. and Kell., leaf -spot. Frequent east of Great Plains. 



Septogloeum celtidis Dearn., leaf -spot. N. Y. 



Seploria celti-gallae W. R. Gerard, leaf-spot. N. Y. 



S. gigaspora Ell. and Ev., leaf-spot. Mass., Kans. 



Sphaerotheca phytoptophila Kell. and Sw., powdery mildew. East of Great 

 Plains. 



Uncinula confusa Mass., powdery mildew. N. C. 



U. parvula Cke. and Pk., powdery mildew. General. 



U. polychaeta (Berk, and Curt.) Ell., powdery mildew. Mass., Ala., Miss., 

 Tex. 



CEPHALANTHUS. 



C. occidentalis, buttonbush. 



Ascochyta cephalanthi Ell. and Ev., leaf-spot. La. 



Cercospora perniciosa Heald and Wolf, leaf-blight. Tex. 



Coniothyrium cephalanthi Ell. and Ev., leaf -spot. La. 



Microsphaera alni (Wallr.) Wint., powdery mildew. N. H., Ala., Ind., 111. 



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



Phyllosticta cephalanthi Tharp, leaf-spot. Tex. 



Puccinia cephalanthi (Seym.) Barth., rust. N. Y., Ind., 111., Kans. 



Ramularia cephalanthi (Ell. and Kell.) Heald, leaf-spot. Southern States. 



Septoria cephalanthi Ell. and Kell., leaf -spot. Kans. 



CERCIS. 



C. canadensis, redbud, * Judas-tree. 



Cercospora cercidicola Ell., leaf-spot. General throughout range of host. 



C. chionea ELI. and Kell., leaf-spot. Ind., 111., Kans. 



Pestalozzia sp., leaf-spot. Fla. 



Phyllosticta cercidicola Ell. and Ev., leaf -spot. W. Va., Ind. 



P. siliquastri Sacc. and Speg., leaf -spot. Ala. 

 *C. occidentalis, California redbud. 



Cercospora cercidicola Ell., leaf -spot. Tex. 



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