LIST OF DISEASES OF ECONOMIC PLANTS 91 



HIBES — Continued. 



R. vulgare, red currant, white currant — Continued. 



Pleonectria berolinensis Sacc, doubtfully parasitic on canes. Conn., Mass., 



Md., Ohio, Mich., Ind., N. Dak,, Utah. 

 Pseudopeziza ribis Kleb., anthracnose. Widespread in Northern States. 

 Puccinia grossulariae (Schum.) Lagh., rust. Mass., Conn., N. Y., Mich., 

 Ind., Minn., N. Dak., Iowa. 

 . Sphaerotheca mors-uvae (Schw.) Berk, and Curt., powdery mildew. Wide- 

 spread in Northern States. 

 *R. grossulariae and other species, gooseberry. 

 Armillaria mellea (Vahl) Quel., root-rot. Oreg. 



tBotrytis cinerea Auct., die-back. Wash., Oreg. 

 Cercospora sp., leaf-spot. N. Y., W. Va., Ind., Mich., Mo., Nebr. 

 Coleosporium ribicola (Cke. and Ell.) Arth., rust. Wyo., Colo., N. Mex. 

 Cronartium occidentale Hedge, Bethel, and Hunt, pifion blister rust. Colo., 

 Ariz., Calif. 

 C. ribicola Fisch., blister rust. New England, Minn. 

 Leptosphaeria coniothyrium (Fckl.) Sacc, cane-blight. Ind., Mo. 

 Mycosphaerella grossulariae (Fr.) Lindau, leaf-spot. General in Northern 



States. 

 Phyllactinia corylea (Pers.) Karst., powdery mildew. N. Y. 

 Phyllosticta grossulariae Sacc, leaf -spot. N. J., Wis., Wash. 

 Plasmopara ribicola Schroet., downy mildew. W. Va., Minn., Oreg. 

 Pseudopeziza ribis Kleb., anthracnose. General in Northern States. 

 Puccinia grossulariae (Schum.) Lagh., rust. New England to N. Dak., 



south to Kans. and Md. 

 Ramularia sp., leaf-spot. Mich. 



Septoria grossulariae (Lib.) West., leaf-spot. Me., Nebr., Kans. 

 Sphaerotheca mors-uvae (Schw.) Berk, and Curt., powdery mildew. General. 



RICINUS. 



R. communis, castor-bean. 



Bacterium solanacearum EFS. {Phytomonas solanaceara (EFS.) Com. S. A. 

 B.), bacterial wilt. Ga., Fla., Ala. 



Botrytis cinerea Auct., gray-mold. Fla. 



Cercospora albido-maculans Wint., leaf-spot. Mo. 



C. ricinella Sacc. and Berl., leaf-spot. Gulf States, Calif. 



Corticium vagum Berk, and Curt., damping-off. Fla., Kans. 



Heterosporium sp. Calif. 



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

 rot. Tex. 



Sclerotinia ricini G. H. Godfrey, gray-mold. Fla., Miss., La., Tex. 



KOBINIA. 



R. pseudacacia, black locust. 



Cylindrosporium solitarium Heald and Wolf, leaf-spot. Tex. 

 Fomes rimosus Berk., yellow wood-rot. Widespread east of Great Plains. 

 F. robiniae Murr., spongy heart-rot. Miss. Valley and Eastern States. 

 Gloeosporium revolutum Ell. and Ev., leaf-spot. N. J. 



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

 rot. Tex. 

 Phoradendron flavescens macrophyllum Engelm., mistletoe. Ariz., N. Mex. 

 Polyporus obtusus Berk., soft heartwood rot. 

 P. sulphureus (Bull.) Fr., brown-checked wood-rot. Mass. 

 Septoria curvata (Rabh. and A. Braun) Sacc, leaf-spot. Ohio. 

 Trametes robiniophila Murr., white heart-rot. Mich. 



ROSA. 



Rosa spp., rose (cultivated and wild species). 

 Armillaria mellea (Vahl) Quel., root-rot. Oreg. 

 Bacterium tumefaciens EFS. and Town. (Phytomonas tumefaciens (EFS. and 



Town.) Com. S. A. B.), crown-gall. Widespread. 

 Botryosphaeria ribis Gross, and Dug., cane-blight. Md., Va. 

 Botrytis cinerea Auct., bud-blight. General. 



Cercospora rosicola Pass., leaf -spot. General east of Great Plains; Wash. 

 C, rosigena Tharp, leaf-spot. Tex. 



