92 BULLETIN 1366, U. S. DEPARTMENT OF AGRICULTURE 



ROSA — Continued. 



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

 Cladosporium fuscum Lk., leaf-spot. Miss., Minn. 

 Coniothyrium rosarum Cke. and Hark., graft canker. N. J., Iowa. 

 Coryneum sp., stem canker. Wash. 

 C. microstictum Berk, and Br., canker. Pa. 

 Cylindrocladium scoparium Morgan, crown canker. Mass., N. Y., Pa., Ga., 



Ind., Mich., Mo. 

 Diaporthe umbrina A. Jenkins, canker. Atlantic coast, W. Va., Ky., Miss. 

 Dicoccum rosae Bon., blight, leaf -spot. Fla., Ind. 

 Diplocarpon rosae Wolf, black-spot. General. 

 Diplodia sp., twig-blight. Fla. 

 Discosia artocreas (Tode) Fr., blossom blight. La. 

 Dothiorella sp., blossom blight. La. 

 Gloeosporium rosae Hals., twig-blight. Widespread east of Miss. River; Tex., 



Okla. 

 Heterodera radicicola (Greef) Muell., root-knot. N. J., W. Va., Ala., Ohio,. 



Mich., Nebr. 

 Leptosphaeria coniothyrium (Fckl.) Sacc, cane-blight. General. 

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

 rot. Tex. 

 Peronospora sparsa Berk., downy mildew. N. Y., Pa., Ohio, Tex., Calif. 

 Phomopsis sp., canker. Ky. 

 Phragmidium americanum (Pk.) Diet., rust. Widespread in Northeastern 



States; upper Miss. Valley. 

 P. discifiorum (Tode) G. F. James, rust. General. 

 P. montivagum Arth., rust. Western States. 

 P. rosae-acicularis Liro, rust. Mich., Wis., Minn., N. Dak., Mont., Idaho,. 



Alaska. 

 P. rosae-arkansanae Diet., rust. Widespread. 

 P. rosae-californicae Diet., rust. Pacific coast. 

 P. rosae-setigerae Diet., rust. Upper Miss. Valley. 

 P. speciosum Cke., rust. General. 

 P. subcorticinum (Schrank) Wint., rust. Widespread. 

 Phyllosticta rosae Desm., leaf-spot. Ind., Fla. 



Physalospora malorum (Pk.) Shear (P. cydoniae Am. Auct.), canker. Tex. 

 Sclerotinia sp., blight. Miss. 

 Septoria rosae Desm., leaf-spot. Miss. 

 Sphaerotheca humuli (DC.) Burr., powdery mildew. Conn., Pa., Tex., Ohio r 



Mich., Wis., Nebr., Calif. 

 S. pannosa (Wallr.) Lev., powdery mildew. General. 

 Uromyces rosicola Ell. and Ev., rust. Nebr. 



RUBUS. 



Rubus sp., blackberry. 



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



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



and Town.) Com. S. A. B.), crown-gall. General. 

 Botrytis cinerea Auct., gray-mold. General on harvested fruit. 

 Cercospora rubi Sacc, blotch. Fla., La., 111. 

 Corticium vagum Berk, and Curt., crown-rot. Colo. 

 Cylindrosporium rubi Ell. and Morgan, leaf-spot. N. C. 

 Fusarium sp., rosette. Md., Gulf States. 

 Fusisporium rubi Wint., double-blossom. N. Y., N. J., Del., Md., Va., 



Tenn., south to Fla., Ala., La., 111. 

 Gloeodes pomigena (Schw.) A. S. Colby (Phyllachora pomigena (Schw.) Sacc), 



sooty blotch. Ind. 

 Gymnoconia inter siitialis (Schl.) Lagh., orange rust. General, especially in 



Eastern States. 

 Kuehneola uredinis (Lk.) Arth., yellow rust. General east of Miss. Riven 

 Leptosphaeria coniothyrium (Fckl.) Sacc, cane-blight. East of Great Plains 



except Southern States; Pacific Northwest. 

 Leptothyrium pomi (Mont, and Fr.) Sacc, flyspeck. Ind. 

 Mycosphaerella rubi E. W. Roark, leaf-spot. General. 

 M. rubina (Pk.) Jacz., spur-blight. N. Y., Wis., Minn. 

 Peronospora rubi Rabh., downy mildew. Wis. 

 Pezizella lythri (Desm.) Shear and B. O. Dodge, fruit-rot. 



