26 BULLETIN 1366, U. S. DEPARTMENT OF AGRICULTURE 



BETA — Continued. 



B. vulgaris, sugar beet — Continued. 



Peronospora schachtii Fekl., downy mildew. Calif. 



Phoma betae (Oud.) Frank, root-rot and leaf-spot. General. 



Puccinia sarcobati (Pk.) Bethel, rust. Colo., Utah. 



Pythium sp., damping-ofi. Ohio, Wis., Utah, Idaho, Calif. 



P. aphanider malum (Edson) Fitz., damping-off. Wis., Utah. 



Sclerotium rolfsii Sace., stem-rot. Ga., Tex., Calif. 



Tylenchus dipsaci (Kuehn) Bast., stem nematode. Kans. 



T. penetrans Cobb, nematode. Utah. 



Uromyces betae (Pers.) Lev., rust. Calif. 



Curly-top, undet. Western States. 



Mosaic, undet. Ind., Kans.. Xebr., Colo., Utah, Calif. 

 B. vulgaris cicla, Swiss chard. 



Actinomyces scabies (Thax.) Gues., scab. Pa., Wis. 



Cercospora beticola Sacc, leaf-spot. General. 



Corticium vagum Berk, and Curt., root-rot. N. Y. 



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



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

 rot. Tex. 



Sclerotium rolfsii Sacc, stem-rot. S. C. La. 



Uromyces betae (Pers.) L£v., rust. Calif. 

 B. vulgaris macrorhiza, mangel-wurzel. 



Bacterium tumefaciens EFS. and Town. {Phytomonas tumefaciens (EFS. and 

 Town.) Com. S. A. B.), crown-gall. Pa. 



Cercospora beticola Sacc, leaf -spot. Conn., Minn., Iowa. 



Corticium vagum Berk, and 'Curt., root-rot. Wash. 



Phoma betae (Oud.) Frank, root-rot and leaf-spot. N. Y., Wis., Minn. 



Pythium debaryanum Hesse, damping-off. Conn., Mich., Wis., Kans., Colo., 

 Utah. 



Sclerotium rolfsii Sacc, stem-rot. La. 



BETUIA. 



B. alba, white birch. 



Magnusiella flava (Farl.) Sadeb., yellow leaf blister. Northeastern States. 



Melanconium bicolor Nees, canker. X. Y., Ind. 



Polyporus betulinus (Bull.) Fr.. powdery sapwood rot. Vt., N. Y. 

 B. lent a, sweet birch. 



Fomes igniarius (L.) Fr., white heart-rot. 



Gloeosporium betularum Ell. and Mart., leaf-spot. Pa., N. J., 111. 



Microsphaera alni (Wallr.) Wint., powdery mildew. N. H. 



Phyllactinia corylea (Pers.) Karst., powdery mildew. N. Y. 



Phyllosticta betulae Ell. and Ev., leaf-spot. N. Y. 



Septoria microsperma Pk.. leaf-spot. Pa., W. Va. 

 B. lutea, yellow birch. 



Fomes applanatus (Pers.) Wallr. {Ganoderma applanatum (Pers.) Pat.), white- 

 streaked rot. Me., N. Y. 



F. fomentarius (L.) Fr., white sapwood rot. New England, N. Y., Pa. 



F. igniarius (L.) Fr., white heart-rot. Vt., N. Y. 



Melampsoridium betulae (Schum.) Arth., rust. X. H., Ind. 



Melanconium bicolor Xees, canker. X. Y. 



Microsphaera alni (Wallr.) Wint., powdery mildew. Mass. 



Nectria coccinea (Pers.) Fr., associated with canker. Mich. 



Polyporus betulinus (Bull.) Fr., powdery sapwood rot. N. Y. 

 B. nigra, river birch. 



Fomes igniarius (L.) Fr., white heart-rot. Conn. 



Gloeosporium betularum Ell. and Mart., leaf-spot. Mass., Pa., Ind., 111., 

 Wis. 



Nectria ditissima Tub, European canker. Pa. 



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



Phyllactinia corylea (Pers.) Karst., powdery mildew. 111., Mo. 

 B. occidentalis, western birch. 



Fomes fomentarius (L.) Fr., white sapwood rot. 



F. igniarius (L.) Fr., white heart-rot. Mont. 





