104 BULLETIN 1366, U. S. DEPARTMENT OF AGRICULTURE 



TSUGA — Continued. 



T. heterophylla, western hemlock — Continued. 



Echinodontium tinctorium Ell. and Ev., brown stringy rot. Mont., Idaho, 

 Oreg. 



Fomes annosus Fr., white spongy rot. Wash. 



F. officinalis Fr., reddish brown-rot. 



F. pinicola Fr., brown crumbly rot. General with host. 



Polyporus dryadeus (Pers.) Fr., white root-rot. Pacific Northwest. 



P. schweinitzii Fr., red-brown butt-rot. Oreg. 



P. sulphureus (Bull.) Fr.. brown-checked wood-rot. 



Razoumofskya tsugensis C. O. Rosendahl, hemlock mistletoe. Pacific North- 

 west; Alaska. 



Rhizina inflata (Schaeff.) Sacc, seedling blight. Idaho. 



Trametes pini (Brot.) Fr. (Fomes pini (Thore) Karst.), honeycomb rot. 

 Wash. 



Uredo holwayi Arth., needle rust. Mont., Idaho. 

 T. mertensiana, mountain hemlock. 



Echinodontium tinctorium Ell. and Ev., brown stringy rot. Wash. 



Fomes officinalis Fr., brown heartwood rot. Idaho. 



F. pinicola Fr., brown crumbly rot. General with host. 



Herpotrichia nigra Hartig, matting. Oreg. 



Polyporus schweinitzii Fr., red-brown butt-rot. 



Pythium debaryanum Hesse, damping-off. 



Razoumofskya tsugensis C. O. Rosendahl, mistletoe. Idaho, Wash. 



Trametes pini (Brot.) Fr. (Fomes pini (Thore) Karst.), honeycomb rot. 

 Oreg. 



TULIPA. 



Tulipa sp., tulip. 



Botrytis tulipae (Lib.) E. F. Hopkins, botrytis blight. General. 

 Rhizoctonia tuliparum (Kleb.) Whet, and John M. Arthur, grav bulb-rot. 



N. Y. 

 Sclerotinia sp., white-rot. Ohio. 



ULMUS. 



Ulmus spp., elms. 



Cercospora sphaeriaeformis Cke., leaf -spot. La. 



Coniothyrium ulmi Tharp. Tex. 



Cylindrosporium tenuisporum Heald and Wolf, leaf-spot. Tex. 



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

 streaked rot. Northeastern States. 



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



Gloeosporium inconspicuum Cav., leaf-spot. Mass., Ohio, Mich., Minn., 

 Okla. 



Gnomonia ulmea (Sacc.) Thuem., black-spot. General east of Great Plains. 



Heterodera radicola (Greef) Muell.-, root-knot. Calif. 



Microsphaera alni (Wallr.) Wint., powdery mildew. 111., Iowa. 



Mycosphaerella ulmi Kleb., leaf-spot. East of Great Plains. 



Nectria cinnabarina (Tode) Fr., canker. Ohio. 



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

 rot. Tex., Ariz. 



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



Phyllactinia corylea (Pers.) Karst., powdery mildew. S. C, Ala., Miss., 

 Tex., 111. 



Phyllosticta confertissima Ell. and Ev., leaf-spot. Pa., Kans. 



P. erratica Ell. and Ev., leaf -spot. Ala. 



P. melaleuca Ell. and Ev., leaf-spot. Ala., Miss., Okla., Mich., Iowa, Mo., 

 Nebr. 



Pleurotus ulmarius Bull., white sap-rot. Widespread east of Great Plains. 



Poronidulus conchifer (Schw.) Murr., twig-blight. Ohio. 



Sphaeropsis ulmicola Ell. and Ev., canker. Pa., Md., Ohio, Wis. 



Taphrina ulmi (Fckl.) Johans., leaf blister. Mass. 



Uncinula macrospora Pk., powdery mildew. General east of Great Plains. 



