LIST OF DISEASES OF ECONOMIC PLANTS 49 



GLEDITSIA. 



G. triacanthos, honeylocust. 



Cercospora condensata Ell. and Kell., leaf-spot. 111., Kans. 



C. olivacea (Berk, and Rav.) Ell., leaf-spot. Ala., Miss., 111., Iowa. 



Cladosporium gleditschiae Cke. S. C. 



Forties applanatus (Pers.) Wallr. (Ganoderma applanation (Pers.) Pat.), white- 

 streaked rot. N. Y. 



Melasmia hypophylla (Berk, and Rav.) Sacc, leaf-spot. Widespread east of 

 Great Plains. 



Microsphaera alni (Wallr.) Wint., powdery mildew. General east of Great 

 Plains. 



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



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



Ravenelia opaca Diet., rust. 111. 



GORDONIA. 



G. lasianthus, loblolly-bay. 



Phyllosticta gordoniae Ell. and Mart., leaf -spot. Fla. 

 GOSSYPIUM. 



G. hirsutum, Upland cotton, G. barbadense, Sea Island cotton. 

 Alternaria sp., leaf -spot. S. C. 



Ascochyta gossypii Syd., blight. Va., N. C., S. C, Ark. 

 Bacterium malvacearum EFS. (Phytomonas malvaceara (EFS.) Com. S. A. 



B.), angular leaf-spot. General in Cotton Belt States; Ariz. 

 Cercospora althaeina Sacc, leaf-spot. 111. 



Cerotelium gossypii (Lagh.) Arth. (Uredo gossypii Lagh.), rust. Fla. 

 Corticium vagum Berk, and Curt., stem-rot, sore-shin. Cotton Belt States; 



Ariz. 

 Diplodia gossypina Cke., boll-rot. General in Cotton Belt States. 

 Fusarium spp., boll-rot. General in Cotton Belt States during wet seasons. 

 F. vasinfectum Atk., wilt. General in sandy soils of Cotton Belt States. 

 Glomerella gossypii (E. A. South worth) Edg., anthracnose. Cotton Belt 



States. 

 Heterodera radicicola (Greef) Muell., root-knot. General in sandy soils in 



Cotton Belt States. 

 Macrosporium nigricantium Atk., black leaf-spot. Cotton Belt States; Ariz. 

 Mycosphaerella gossypina (Cke.) Earle, leaf-spot. General in Cotton Belt 



States. 

 Olpitrichum carpophilum Atk., boll-rot. N. C, S. C, Ala., La. 

 Ozonium om-nivorum Shear (Phymatotrickum omnivorum (Shear) Dug.), root- 

 rot. Tex., Okla., N. Mex., Ariz., Calif. 

 Phlyctaena gossypii Sacc, leaf-spot. S. C, Ala. 

 Phyllosticta gossypina Ell. and Mart., leaf-spot. N. C, S. C, Ala., Miss., 



111. 

 Puccinia hibisciata (Schw.) Kell. (Aecidium gossypii Ell. and Ev.), rust. 



Tex., Ariz., Calif. 

 Pythium debaryanum Hesse, damping-off. Ala. 

 Ramularia areola Atk., frosty mildew. Cotton Belt States; Fla. 

 Septoria gossypina Cke., leaf-spot. S. C, Miss. 

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

 Tylenchus penetrans Cobb, nematode. N. C, Ga. 

 Verticillium alboatrum Reinke and Berth., wilt. Va. 

 Malnutrition, "rust," nonpar. Poorer soils, Cotton Belt States. 



GYMNOCLABUS. 



G. dioicus, Kentucky coffeetree. 



Cercospora gymnocladi Ell. and Kell., leaf-spot. 111., Nebr., Kans., Mo. 

 Marssonia sp., leaf-spot. Nebr. 



HAMAMEIIS. 



H. virginiana, witch-hazel. 



Cercospora hamamelidis Ell. and Ev., leaf-spot. Fla. 

 Gonatobotryum maculicolum (Wint.) Sacc, leaf-spot. N. Y. 

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



