LIST OF DISEASES OF ECONOMIC PLANTS 65 



MEDICAGO— Continued. 



M . sativa, alfalfa — Continued. 



Cuscuta sp., dodder. Frequent where alfalfa is grown. 



Fusarium sp., root-rot. S. C, Va., Ohio, N. Dak., Kans., N. Mex., Utah, 

 Nev. 



Gloeosporium medicaginis Ell. and Kell., anthracnose. Va., Kans., Okla. 



Heterodera radicicola (Greef) Muell., root-knot. N. Y., N. J., Tex. 



Macrosporium sp., leaf-spot. Me., Pa., N. J., Md., Va., W. Va., La., Tex., 

 Mich., Mo. 



M. sarcinaeforme Cav., black-mold. 111. 



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

 rot. Ark., Okla., Tex., Southwest. 



Peronospora trifoliorum D By., downy mildew. General. 



Pleosphaerulina briosiana Poll., leaf-spot. Va., Ky., Ala., Ga., Ind., 111., 

 Wis., Minn., Iowa, Mo., S. Dak., Kans. 



Pseudopeziza medicaginis (Lib.) Sacc, leaf-spot. General. 



Pyrenopeziza medicaginis Fckl., yellow leaf-blotch. General. 



Rhizoctonia crocorum (Pers.) DC., violet root-rot. Middle Atlantic States; 

 Miss. Valley; Pacific Northwest. 



Sclerotinia trifoliorum Eriks., stem-rot. Mostly east of Miss. River; Pacific 



I coast. 



Sclerotium rolfsii Sacc, stem-rot. Va., La. 

 Stagonospora sp., leaf -spot. N. Y., N. J., Del., 111. 

 Thielavia basicola (Berk, and Br.) Zopf, black root-rot. Mass., N. J., Tex. 

 Tylenchus dipsaci (Kuehn) Bast., stem nematode. Wyo., Colo., N. Mex., 

 Idaho, Oreg., Calif. 

 Uromyces medicaginis Pass., rust. General. 

 Urophlyctis alfalfae (Lagh.) Magn., crown-wart. West of Rocky Mts. 

 Girdle, undet. Ariz. 

 Yellowing, undet. General, especially in the eastern United States. 



1 MEIIA. 



M. azedarach, chinaberry. 



Cercospora leucosticta Ell. and Ev., leaf-spot. Ala., Miss., La. 



C. meliae Ell. and Ev., leaf -spot. La. 



Nectria cinnabarina (Tode) Fr., canker. S. C. 



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

 rot. Tex., Ariz. 



Phoradendron flavescens (Pursh) Nutt., mistletoe. Tex. 



Phyllosticta meliae Ell. and Ev., leaf -spot. La. 

 M . azedarach umbraculiformis, Texas umbrella-tree. 



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

 rot. Tex. 



MEIIIOTUS. 



M. alba, white sweetelover. 



Ascochyta meliloti (Trel.) Davis, leaf-spot. Occurs in widely scattered 

 States. 



Cercospora davisii Ell. and Ev., leaf-spot. Ala., Md., Ind., Wis., Minn., 

 Iowa, Kans. 



Colletotrichum trifolii S. M. Bain, anthracnose. 111. 



Corticium vagum Berk, and Curt., stem-rot. Ala., Mich., Mont., Wash. 



Fusarium sp., root-rot. Tenn., N. Dak., N. Mex. 



Gloeosporium sp., anthracnose. 111., Wis., Kans. 



Heterodera radicicola (Greef) Muell., root-knot. S. C, Ala. 



Mycosphaerella lethalis R. E. Stone, stem-spot. N. Y. 



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

 rot. Tex. 



Peronospora trifoliorum D By., downy mildew. Wis. 



Sclerotinia trifoliorum Eriks., root-rot. Ky., Wash. 



Stagonospora meliloti (Lasch) Petr., leaf-spot. Wis. 



Mosaic, undet. Ark., N. Dak. 



58433— 26f 5 



