52 BULLETIN 1366, U. S. DEPABTMEXT OE AGBICULTUBE 



HOLCUS. 



H. halepensis, Johnson grass. 



Cercospora sorghi Ell. and Ev., leaf-spot. Ala., La,, Tex., Xebr. 



Colletotrichum lineola Cda., anthracnose. Ala., La., Tex. 



Helminthosporium turcicum Pass., leaf-blight. Ala,. Tex. 



Phyllosiicta sorghina Sacc, leaf-spot. Tex. 



Puccinia purpurea Cke., rust, S. C, Fla., Ala., La., Okla., Tex., Calif. 



Septoria pertusa Heald and Wolf, leaf-spot, Tex. 



Sphacelotheca sorghi (Lk.) Clint., smut, Utah, Wash. 

 H. sorghum, sorghum. 



Bacterium andropogoni EFS., stripe. General. 



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



Colletotrichum lineola Cda., anthracnose. Conn., W. Ya., X. C. Ga., Fla.,. 

 Ala., La., Tex., Minn. 



Helminthosporium turcicum Pass., leaf-blight. Ivans., Tex. 



Puccinia purpurea Cke., rust. Tex., Okla., La., Fla., Calif. 



Sclerotium rolfsii Sacc, stem-rot. La, 



Sorosporium reilianum (Kuehn) McAlp., head-smut, General. 



Sphacelotheca cruenta (Kuehn) Potter, loose kernel smut, Ala., Tex., Ark.,. 

 X. Mex. 



S. sorghi (Lk.) Clint,, covered kernel smut, General. 

 *H. sorghum saccharatus, sorgo, sugar sorghum. 



Bacterium andropogoni EFS., stripe. 



Colletotrichum lineola Cda., anthracnose. X. J., Ya. 



Phoma insidiosa F. Tassi, leaf-spot, Tex., Miss., Ark., Kans. 



Puccinia purpurea Cke., rust. Tex. 



Sphacelotheca sorghi (Lk.) Clint., covered kernel smut. Colo. 

 H. sorghum sudanensis, Sudan grass. 



Colletotrichum graminicolum (Ces.) Wils., anthracnose. X. C, Ala., Tex.. 

 N. Dak. 



C. lineola Cda., anthracnose. Ala. 



Helminthosporium turcicum Pass., leaf-blight. Tex. 



Phoma insidiosa F. Tassi, leaf-spot, Va. 



Sorosporium reilianum (Kuehn) McAlp., head-smut. Wash. 



Sphacelotheca sorghi (Lk.) Clint,, covered kernel smut. X. C, Xebr., Kans~ 

 *H. sorghum technicus, broomcorn. 



Bacterium andropogoni EFS., stripe. 



Colletotrichum lineola Cda., anthracnose. Occurs in widely scattered States^ 



Sorosporium reilianum (Kuehn) McAlp., head-smut. Ohio. 



Sphacelotheca cruenta (Kuehn) Potter, loose kernel smut. Tex. 



S. sorghi (Lk.) Clint., covered kernel smut. Ohio. 



HOIODISCUS. 



H. discolor, *oceanspray. 



C ylindrosporium filipendulae Thuem., leaf -spot. Wash. 

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

 Podosphaera oxyacanthae (DC.) D By., powdery mildew. Idaho. 



HORDEUM. 



H. vulgar e, barley. 



Bacterium translucens L. R. Jones, A. G. Johnson, and C. S. Reddv. bac- 

 terial blight, S. C Tex.. Ark.. Ind. ; Wis., Minn., Iowa. X. Dak., S. Dak., 

 Mont., Colo., Idaho, Oreg. 



Claviceps purpurea (Ft.) Tul., ergot. Infrequent but widely distributed. 



Colletotrichum graminicolum (Ces.) Wils.. anthracnose. General east of 

 Great Plains. 



Erysiphe graminis DC, powdery mildew. General. 



Fusarium culmorum leteius Sherb., seedling blight, Oreg.. Calif. 



Gibberella saubinetii (Mont.) Sacc, scab. General east of Great Plains. 



Helminthosporium calif ornicum W. W. Mackie and G. E. Paxton, rusty- 

 blotch. Calif. 



H. gramineum Rabh., stripe. General. 



H. sativum Pam., King, and Bak., spot-blotch. General. 



Marasmins tritici P. A. Young. 111. 



Ophiobolus graminis Sacc, take-all, foot-rot. Calif. 



