18 BULLETIN 1366, U. S. DEPARTMENT OF AGRICULTURE 



ALLIUM— Continued. 

 A. sativum, garlic. 



Macrosporium sarcinula parasiticum Thuem., black stalk-rot. La. 



Sclerotium cepivorum Berk., white-rot. Oreg. 



S. rolfsii Sacc, stem-rot. La. 



Tylenchus dipsaci (Kuehn) Bast., bulb nematode. Calif. 

 A. schoenoprasum, chives. 



Puccinia porri (Sow.) Wint., rust. Conn. 

 ALNUS. 



A. incana, speckled alder. 



Cylindrosporium vermiforme Davis, leaf-spot. Wis. 



Erysiphe aggregata (Pk.) Farl., powdery mildew. Me., N. Y., Wis. 



Exoascus tosquinetii Sacc, catkin deformation. Minn. 



Hymenochaete agglutinans Ell., stem girdling. Pa. 



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

 Wis. 



Taphrina robinsoniana Gies., catkin deformation. N.Y., Md., Va. 

 *A. rhombifolia, white alder. 



Fomes igniarius (L.) Fr., white heart-rot. Common in host range. 



Melampsoridium alni (Thuem.) Diet., rust. Calif. 

 *A. rubra, alder. 



Cercosporella alni Dearn. and Barth., leaf -spot. Wash., Oreg. 



Exoascus sp., catkin deformation. Wash., Oreg. 



Fames applanatus (Pers.) Wallr. (Ganoderma applanatum (Pers.) Pat.), 

 white-streaked rot. Wash. 



F. igniarius (L.) Fr., white heart-rot. Common in host range. 



Gnomonia alni Plow., leaf -spot. Calif. 



Gnomoniella tubiformis (Tode) Sacc, black-spot. Oreg. 



Melampsoridium alni (Thuem.) Diet., rust. Calif. 



Microsphaera alni (Wallr.) Wint., powdery mildew. Wash., Oreg. 



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



Polystictus hirsutus (Wulf.) Fr., white-rot. 



Septoria alnifolia Ell. and Ev., leaf -spot. Wash., Oreg. 

 A. rugosa, hazel alder. 



Erysiphe aggregata (Pk.) Farl., powdery mildew. N. Y., W. Va. 



Exoascus tosquinetii Sacc, catkin deformation. Me., Mass., Ala. 



Gnomoniella tubiformis (Tode) Sacc, black-spot. Pa. 



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



Mycosphaerella hippocastani (Otto Jaap) Kleb., leaf-spot. N. Y. 



Phyllactinia corylea (Pers.) Karst., powdery mildew. Ala., Ohio. 



Taphrina robinsonianalGies., catkin deformation. Md., Va. 

 *A. sinuata, alder. 



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



Phyllachora sp., leaf -spot. Wash. 

 A. tenuifolia, mountain alder. 



Cylindrosporium sp., leaf-spot. Mont. 



Exoascus spp., catkin deformation. Mont., Idaho, Oreg. 



E. tosquinetii Sacc, catkin deformation. Idaho. 



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



Gnomoniella tubiformis (Tode) Sacc, black-spot. Oreg. 



Phyllactinia corylea (Pers.) Karst., powdery mildew. Colo., N. Mex., Idaho, 

 Oreg. 



Polystictus hirsutus (Wulf.) Fr., white-rot. 



ALTHAEA. 



A. rosea, hollyhock. 



Alternaria sp., leaf-spot. Del., Mich., Nebr. 



Ascochyta althaeina Sacc and Bizz., leaf -spot. N. Y. 



A. parasitica Fautr., leaf-spot. Conn., Del., W. Va. 



Cercospora althaeina Sacc, leaf -spot. General east of Great Plains. 



C. kellermanii Bub., leaf -spot. Ind., Ohio. 



C. nebulosa Sacc, leaf-spot. Nebr. 



