34 BULLETIN" 1366, U. S. DEPAKTMESTT OF AGKICULTUEE 



CHAETOCHLOA. 

 C. italica, millet. 



Helminthosporium sp., leaf-spot. Minn. 



Piricularia grisea (Cke.) Sacc, leaf-spot. Pa., Va., Ala., Tex., Ind., 111., 



Iowa, Mo. 

 Sclerospora graminicola (Sacc.) Schroet., downy mildew. North-Central 



States. 

 Ustilago crameri Koern., smut. General east of Great Plains. 



CHAMAECYPARIS. 



C. nootkatensis, * Alaska cedar, Nootka cypress. 



Gymnosporangium nootkatensis (Trel.) Arth., rust. Wash., Oreg. 

 C. thyoides, whitecedar. 



Gymnosporangium botryapites (Schw.) Kern, rust. Atlantic Coast States 



from Mass. to Ala. 

 G. ellisii (Berk.) Farl., rust. Atlantic Coast States from Mass. to Del.; 



also Fla. and Ala. 

 G. transformers (Ell.) Kern, rust. Mass., N. J. 



CHAYOTA. 



C. edulis, chayote. 



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



Colletotriclium lagenarium (Pass.) Ell. and Hals., anthracnose. Fla. 



CHENOP ODIUM. 



*C. ambrosioides anthelminticum, wormseed. 



Cercospora anthelmintica Atk., leaf-spot. Ala., Miss., Tex. 



C. chenopodii Fr., leaf-spot. • Tex. 



Heterodera radicicola (Greef) MuelL, root-knot. Ala. 



Phyllosticta ambrosioides Thuem. and Syd., leaf-spot. Del., N. J., La., Ind. 



CHIONANTHUS. 



C. virginica, white fringetree. 



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

 Phyllosticta chionanthi Thuem., leaf-spot. N. J., W. Va. 

 Septoria chionanthi Cke., leaf-spot. S. C. 

 S. eleospora Sacc, leaf-spot. Tex. 



CHRYSANTHEMUM. 



Chrysanthemum sp., chrysanthemum. 

 Aphelenchus sp., bud nema. Md. 



Ascochyta chrysanthemi F. L. Stevens, ray-blight. N. C, S. C. 

 Botrytis sp., bud-rot. Mass., Ky., Minn., Mo. 

 B. cinerea Auct., flower deformation. N. Y. 

 Cercospora chrysanthemi Heald and Wolf., leaf-spot. Tex. 

 Corticium vagum Berk, and Curt., stem-rot. Md. 

 Cylindrosporium chrysanthemi Ell. and Dearn., leaf-spot. Mass., Conn., 



Pa., N. C, Ga., Miss. 

 Erysiphe cichoracearum DC, powdery mildew. General. 

 Fusarium sp., wilt. Mass., N. J., Ala., Fla., Ohio, Kans. 

 Heterodera radicicola (Greef) MuelL, root-knot. Miss., Tex., Wash. 

 Ozonium omnivorum Shear {Phymatotrichum omnivorum (Shear) Dug.), 



root-rot. Tex. 

 Phyllosticta chrysanthemi Ell. and Dearn., leaf -spot. Mass., Fla. 

 Puccinia chrysanthemi Roze, rust. General. 



Septoria chrysanthemella Cav., leaf-spot. General east of Great Plains. 

 S. leucanthemi Sacc. and Speg., leaf-spot. Conn. 

 Verticillium alboatrum Reinke and Berth., wilt. N. J. 

 Chlorosis, nonpar. Pa., Md. 

 Mosaic, undet. Md., Ohio. 

 Yellows, undet. Mich. 



