40 BULLETIN 1366, U. S. DEPARTMENT OF AGRICULTURE 



CUCUMIS. 



C. melo, cantaloupe, niuskmelon. 



Bad'., lis Gidd. (Erwinia melonis (Gidd.) Coin. S. A. B.), soft-rot. 



Vt.. Mass. 

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



wilt. General. 

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

 Cladosporium cucumermum Ell. and Arth., scab. Mass., Conn., X. J., Del., 



Ohio, Mich., Calif. 

 Colletotrichum lo.genariv.rn (Pass.) Ell. and Hals., anthracnose. General 



east of Great Plains. 

 Erysiphe dehor acearum DC, powdery mildew. Va., Fla. 

 Fusarium niveum EFS.. wilt. General in southern half of the United States. 

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



Southern States. 

 Macrosporium cucumerinum EU. and Ev., leaf-blight. General. 

 Mycosphaerelia citrullina (C. O. Smith) Gross., gummy stem-blight. X. Y. 

 Phyliosticta cucurbitacearum Sacc, leaf-spot. Ohio. 

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



General east of Great Plains, especially in Gulf and Atlantic Coast States. 

 Scleroiinia scleroiiorum (Lib.) Mass., timber rot. Mass. 

 Scleroiium rolfsii Sacc, stem-rot. South Atlantic and Gulf States. 

 Septoria cucurbitacearum Sacc. leaf-spot. >.. Y., "Wis. 

 Mosaic, undet. Frequent in widely scattered States. 

 C. saiivus, cucumber. 



Acrernonium sp., leaf-blight. Mass., Ohio. 



Bacillus sp., soft-rot. Fla. 



B. melonis Gidd. [Erwinia melonis (Gidd.) Com. S. A. B:), soft-rot. Ala. 



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



wilt. General. 

 Bacterium lachrymans EFS. and Mary K. Bryan, angular leaf-spot. East of 



Great Plains; Colo., Calif, (in greenhouse). 

 Cercospora sp., leaf-spot. Ind. 



Cladosporiurn cucumerinum Ell. and Arth., scab. General. 

 Colletotrichum lagenarium ^Pass.) Ell. and Hals., anthracnose. East of 



Great Plains, Colo., Ariz., Calif. 

 Corticium vagum Berk, and Curt., stem-rot. Ohio. Wash. 

 Erysiphe cichoracearum DC, powdery mildew. Widespread, especially 



in Xorthern States. 

 Fusarium niveum EFS.. wilt. Frequent east of Great Plains, especially in 



the South; X. Mex.. Calif. 

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



States. 

 Macrosporium cucumerinum Ell. and Ev., leaf -blight. General. 

 Mycosphaerelia citrullina (C 0. Smith) Gross., guniiny stem-blight. Fla. 

 Phyliosticta cucurbitacearum Sacc. leaf-spot. Ohio. 

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



General east of Great Plains, especially in Gulf and Atlantic Coast States; 



Calif. 

 Pythium aphanidermatum (Edson Fitz.. cottony leak. X. C. S. C. 

 P. debaryanum Hesse, dainping-off. Mass.. X. Y., Ohio. Mich., Minn. 

 Scierotinia scleroiiorum ^Lib.) Mass.. timber rot. Widespread. 

 Scleroiium rolfsii Sacc, stem-rot. S. C 



Stemphyliuyn cucurbitacearum Geo. Osner, leaf-spot. Ohio, Ind. 

 Mosaic undet. General. 



CUCURBITA. 



Cucurbita sp., gourd. 



Bacterium lachrymans EFS. and Mary K. Bryan, angular leaf-spot. 

 Cercospora cucurbitacea Ell. and Gall., leaf-spot. Ala. 

 Colletotrichum lagenarium v Pass.) Ell. and Hals., anthracnose. 111. 

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

 Ohio, Ind. 

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

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

 bacterial wilt. East of Great Plains; Colo., Calif. 



