14 BULLETIN 1366, U. S. DEPARTMENT OF AGRICULTURE 



ACER — Continued. 



A. glabrum, Rocky Mountain maple — Continued. 



Septoria acerina Pk., leaf-spot. Oreg. 



S. circinata Ell. and Ev., leaf-spot. Colo., Calif. 



S. saccharina Ell. and Ev., leaf-spot. Wash. 

 A. macrophyllum, Oregon maple. 



Cercosporella aceris Dearn. and Bartk., leaf-spot. Wash., Oreg. 



C. albo punctata Ell. and Ev., leaf-spot. Wash. 



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



Nectria cinnabarina Fr., canker. Wash. 



N. galligena Bres., European canker. Oreg. 



Rhytisma acerinum (Pers.) Fr., tar-spot. Wash. 



R. punctatum (Pers.) Fr., black-specked leaf-spot. Pacific coast. 



Septoria aceris-macrophylli Pk., leaf-spot. Wash. 



S. circinata Ell. and Ev., leaf-spot. Wash., Oreg. 

 A. negundo, boxelder. 



Cercospora negundinis Ell. and Ev., leaf-spot. Nebr. 



Cylindrosporium negundinis Ell. and Ev., leaf-spot. Nebr., Kans. 



Fusarium negundi Sherb., red-stain. General with host. 



Gloeosporium apocryptum Ell. and Ev., anthracnose. Wis., 111., Kans., 

 Okla. 



G. negundinis Ell. and Ev., leaf-blight. Del., Tex. 



Nectria cinnabarina Fr., canker. Ohio, Minn., N. Dak. 



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

 rot. Tex. 



Phleospora aceris (Lib.) Sacc, leaf-spot. Calif. 



Phyllosticta arida Earle, leaf-spot. Ala. 



P. minima (Berk, and Curt.) Ell. and Ev., leaf-spot. Conn. 



P. negundinis Sacc. and Speg., leaf-spot. Me., R. I., W. Va., Ala. 



Pleurotus ostreatus Jacq., white line rot. N. Dak., S. Dak., Nebr. 



P. ulmarius Bull., white sap-rot. Iowa, Kans. 



Polyporus squa?nosus (Huds.) Fr., white strand-rot. Minn. 



Rhytisma punctatum (Pers.) Fr., black-specked leaf-spot. N. Y. 



Septogloeum acerinum (Pass.) Sacc, leaf-spot. Calif. 



Septoria acerella Sacc, leaf-spot. Mo., Mont. 



S. marginata Heald and Wolf, leaf-spot. Tex. 



S. negundinis Ell. and Ev., leaf-spot. Mass., Utah. 



S. samarae Pk., leaf -spot. Colo. 



Sphaeropsis albescens Ell. and Ev., twig-blight. S. Dak., Kans. 



Stereum purpureum Pers., silver leaf. S. Dak. 

 A. negundo calif ornicum, California boxelder. 



Phleospora aceris (Lib.) Sacc, leaf-spot. Calif. 



P. calif ornica Ell. and Ev., leaf-spot. Calif. 



Septoria marginata Heald and Wolf, leaf-spot. Tex. 

 ^4.. nigrum, black maple. 



Gloeosporium saccharinum Ell. and Ev., leaf -blight. Iowa. 



Rhytisma punctatum (Pers.) Fr., black-specked leaf-spot. W. Va. 



Taphrina sp., leaf blister. Ohio. 

 A. palmatum, Japanese maple. 



Nectria cinnabarina Fr., canker. Conn., Pa. 



Pseudographium sp., twig canker. Wash. 

 A. pennsylvanicum, striped maple, *moosewood. 



Fo?nes igniarius (L.) Fr., white heart-rot. Vt., N. Y. 



Gloeosporium acerinum West., leaf -blight. Vt. 



G. apocryptum Ell. and Ev., anthracnose. Pa. 



Phleospora aceris (Lib.) Sacc, leaf-spot. Pa. 



Phyllosticta minutissima Ell. and Ev., leaf-spot. N. Y., Pa. 



Rhytisma punctatum (Pers.) Fr., tar-spot. W. Va. 



Septoria acerina Pk., leaf-spot. New England, N. Y., Pa. 



Uncinula circinata Cke. and Pk., powdery mildew. N. Y. 

 A. platanoides, Norway maple. 



Gloeosporium apocryptum Ell. and Ev., anthracnose. Me., N. Y. 



Microstroma sp., leaf mildew, Ohio, III. 



