LIST OF DISEASES OF ECONOMIC PLANTS 41 



CUCURBITA— Continued. 



C. maxima, squash; C. pepo condensa, summer squash — Continued. 

 Cercospora cucurbitae Ell. and Ev., leaf-spot. N. J., Ohio. 

 Choanephora cucurbitarum (Berk, and Rav.) Thax., brown-rot, blossom 



blight. Mass., Conn., N. Y., N. C. S. C, Fla., Ohio, Tex. 

 Cladosporium cucumerinum Ell. and Arth., scab. Me. 

 Colletotrichum lagenarium (Pass.) Ell. and Hals., anthracnose. Mass., Conn., 



Pa., Md., Ohio, Minn. 

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



Erysiphe cichoracearum DC, powdery mildew. Conn., Del., N. Mex., Utah. 

 Fusarium niveum EFS., wilt. N. C, Tex., Ohio, Nebr., N. Mex., Ariz., Calif. 

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

 Macrosporium cucumerinum Ell. and Ev., leaf -blight. N. Y., Minn. 

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

 rot. Tex. 

 Pseudoperonospora cubensis (Berk, and Curt.) Rostew., downv mildew. 



Conn., Del., Va., S. C, Tex. 

 Rhizopus sp., black-mold rot. N. Y., Tex. 

 Septoria cucurbitacearum Sacc, leaf -spot. Ind. 

 Mosaic, undet. Vt., Conn., N. J., Pa., La., Tex., Minn. 

 C. pepo, pumpkin. 



Bacillus tracheiphilus EFS. (Erwinia tracheiphila (EFS.) Com. S. A. B.), 



bacterial wilt. Ohio, Calif. 

 Botrytis cinerea Auct., gray-mold rot. Tex. 

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

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

 Erysiphe cichoracearum DC, powderv mildew. Conn., Del., N. Mex., 



Calif. 

 Heterodera radicicola (Greef) Muell., root-knot. La., Tex. 

 Macrosporium cucumerinum Ell. and Ev., leaf-blight. W. Va., Minn. 

 Phyllosticta orbicularis Ell. and Ev., leaf-spot. N. Y., Del. 

 Pseudoperonospora cubensis (Berk, and Curt.) Rostew., downy mildew. 



Conn., N. J., Va., Ohio. 

 Septoria cucurbitacearum Sacc, leaf-spot. 



CUPRESSUS. 

 C. arizonica, Arizona cypress. 



Gymnosporangium cupressi Long and L. N. Goodding, rust. Ariz. 

 C. glabra, smooth cypress. 



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

 rot. Tex. 

 Phoma sp., nursery blight. Pa., 111., Iowa, Nebr., Kans. 



CYCAS. 



C. revoluta, sago cycas. 



Ascochyta cycadina G. Scalia, leaf-spot. Tex. 

 CYCLAMEN. 



Cyclamen sp., cyclamen. 



Botrytis cinerea Auct. Pa., Ohio, Calif. 



Glomerella cingulata (Ston.) Spauld. and Schrenk, anthracnose. Mass., Va. 



Heterodera radicicola (Greef) Muell., root-knot. W. Va., Ohio, Ind., Nebr. 



Phoma cyclamenae Hals., leaf-spot. Ohio. 



Phyllosticta cyclaminicola Trel., leaf -spot. 111. 



Ramularia cyclaminicola Trel., leaf-spot. 111., Minn. 



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



CYDONIA. 



C. japonica, flowering quince. 



Bacillus amylovorus (Burr.) Trev. (Erwinia amylovora (Burr.) Com. S. A. B.), 



blight. Mich. 

 Gymnosporangium blasdaleanum (Diet, and Holw.) Kern, rust. Oreg. 

 G. germinale (Schw.) Kern, rust. Me., Conn., N. J. 



58433— 26f 4 



