64 BULLETIN 1366, U. S. DEPARTMENT OF AGRICULTURE 



MAIUS — Continued. 



M. sylvestris, apple — Continued. 



Podosphaera leucotricha (Ell. and Ev.) Salm., powdery mildew. General, 



most destructive in Western States. 

 P. oxyacanthae (DC.) D By., powdery mildew. General. 

 Polyporus lacteus Fr., sap-rot and heart-rot. Va., Ind., Idaho, Wash., Oreg. 

 Polystictus versicolor (L.) Fr., yellowish wood-rot. N. Y., Mo., Kans., 



Pacific coast. 

 Pseudomonas papulans D. H. Rose, blister spot. Mo. 

 Schizophyllum commune Fr., heart-rot. North of Ohio and Mo. Rivers; 



Kans., Nebr., Pacific coast. 

 Sclerotinia cinerea (Bon.) Schroet. (Monilia . oregonensis Barss and 



Posey), blossom blight. Wash., Oreg. 

 S. fructicola (Wint.) Rehm (S. americana (Wormald) Norton and Ezekiel) 



brown-rot. East of Great Plains; Pacific coast. 

 Septobasidium sp., canker. N. Y., Miss., Tex. 

 S. pseudopedicellatum Burt, canker. N. C. 

 S. retiforme (Berk, and Curt.) Pat,, canker. Southern States. 

 Stereum purpureum Pers., associated with silver-leaf. Me., N. Y., Minn., 



Wash. 

 Valsa spp. (Cytospora spp.), die-back, canker. New England, N. Y., Pa., 



111., Minn., Western States. 

 Venturia inaequalis (Cke.) Aderh., scab. Reported from every State ex- 

 cept Fla., La., Tex., Ariz., Nev., Utah, Wyo. Most serious in East. 

 Volutella fructi F. L. Stevens and J. G. Hall, spongy dry-rot. Mass., N. Y., 



Pa., W. Va., N. C, Ind. 

 Xylaria spp., black root-rot. N. Y., Pa., Va., W. Va., Tenn., N. C, S. C, 



Ga., Ark., Ind., 111., Mich., Iowa, Kans. 

 Bitter-pit (stippen, Baldwin spot), undet. General. 

 Black-heart, nonpar. Md., Va., Nebr., Mont. 



Chlorosis, nonpar. Me., N. Y., Pa., S. Dak., N. Mex., Wyo., Wash. 

 Jonathan spot, undet. Eastern apple sections to Nebr. and Kans.; Colo., 



I c\ f\ n o i^fiPiTif* ocift^T 



Measles,' undet. Pa.,' Md., Va.; W. Va., S. C, Ala., Ark., Tex., Ohio, 111., 



Mich., Mo., Kans., Colo., N. Mex. 

 Mosaic, undet. N. Y. 



Rosette, undet. Del., Md., Kans., Colo., Pacific Northwest. 

 Scald, nonpar. General on stored fruit. 

 Tan disease, undet. Md., Wash. 

 Water-core, nonpar. General. 



MANGIFERA. 



M. indica, mango. 



Glomerella cingulata (Ston.) Spauld. and Schrenk, anthracnose. Fla. 

 Phyllosticta mortoni Fairman, leaf-spot. Fla. 



MANIHOT. 



M. esculenta, cassava. 



Cercospora cassavae Ell. and Ev., leaf -spot. Fla. 

 Gloeosporium manihotis P. Henn., wither-tip. La. 



MEDICAGO. 



M. maculata, southern bur clover. 



Cercospora medicaginis Ell. and Ev., leaf-spot. Southern States. 

 Pseudoplea medicaginis Miles, leaf-spot. Ala. 

 M. sativa, alfalfa. 



Aplanobacter insidiosum McC, bacterial root-rot. Ala., Ind., 111., Wis., 



Colo. 

 Ascochyta imperfecta Pk., leaf -spot. N. Y., Ky., 111., Wash. 

 Bacterium medicaginis (Sack.) EFS. (Phytomonas medicaginis (Sack.) Com. 



S. A. B.), bacterial blight. General, especially in Western States. 

 B. tumefaciens EFS. and Town. (Phytomonas tumefaciens (EFS. and Town.) 



Com. S. A. B.), crown-gall. Md., Va., Ky.j Ala. 

 Cercospora medicaginis Ell. and Ev., leaf -spot." East of Great Plains. 

 Colleiotrichum trifolii S. M. Bain, anthracnose. General east of Great 



Plains. 



