84 BULLETIN 1366, U. S. DEPAETMEKT OF AGRICULTURE 



PRTJNITS— Continued. 



P. virginiana, P. demissa, chokecherry — Continued. 



Plowrightia morbosa (Schw.) Sacc, black-knot. "Widespread in Northern 



States. 

 Podosphaera oxyacanthae (DC.) D By., powdery mildew. Widespread in 



Northern States. 

 Sclerotinia angustior Rehm. N. Y., Pa., Iowa, N. Dak. 

 S. demissa B. F. Dana, blight. Idaho, Wash. 

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



brown-rot. Conn., Fla., Kans. 

 Septogloeum nuttallii Hark., leaf-spot. Oreg. 

 Tranzschelia punctata (Pers.) Arth., rust. S. C, Mich., 111. 

 P. armeniaca, apricot. 



Ar miliaria mellea (Vahl) Quel., root-rot. Calif. 



Bacillus amylovorus (Burr.) Trev. {Erwinia amylovora (Burr.) Com. S. A. B.),- 



blight. Pa., Tex., Nebr., Colo. 

 Bacterium cerasi F. L. Griffin, bacterial gummosis. Calif. 

 B. pruni EFS. (Phytomonas pruni (EFS.) Com. S. A. B.), bacterial spot, 



111., Nebr. 

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



Com. S. A. B.), crown-gall. Colo., Ariz., Idaho, Pacific coast. 

 Botrytis cinerea Auct., fruit-rot. Calif. 

 Cercospora circumscissa Sacc, shot-hole. Tex., Calif. 

 Cladosporium carpophilum Thuem., scab. Widespread. 

 Coccomyces sp., leaf -spot. Mass., Tex. 



Coryneum beijerinckii Oud., blight. Utah, Idaho, Pacific coast. 

 Heterodera radicicola (Greef) Muell., root-knot. Ariz. 

 Monilia sp., blossom blight. Calif. 

 Monochaetia rosenwaldia A. Khazanoff , tumor. Calif. 



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

 rot. Ariz. 

 Phyllosticta circumscissa Cke., shot-hole. Calif. 

 Plowrightia morbosa (Schw.) Sacc, black-knot. N. Y., Colo. 

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



blossom blight. Wash., Oreg. 

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



brown-rot. Mass., Conn., N. Y., Md., Ohio, Ind., 111., Tex., Okla., 



Colo., Pacific coast. 

 S. sclerotiorum (Lib.) Mass., green-rot. Calif. 

 Septoria cerasina Pk., leaf-spot. Calif. 



Tranzschelia punctata (Pers.) Arth., rust. Miss., Tex., Calif. 

 Valsa leucostoma (Pers.) Fr., twig-blight. Tex. 

 Verticillium sp., wilt. Calif. 

 P. domestica (in part), prune. 



Armillaria mellea (Vahl) Quel., root-rot. Pacific coast. 



Bacillus amylovorus (Burr.) Trev. (Erwinia amylovora (Burr.) Com. S. A. B.),. 



blight. Pacific Northwest. 

 Bacterium cerasi F. L. Griffin, bacterial gummosis. Pacific coast. 

 B. pruni EFS. (Phytomonas pruni (EFS.) Com. S. A. B.), bacterial spot. 



N, Y., Pa. 

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



Com. S. A. B.), crown-gall. Pacific Northwest; Calif. 

 Cercospora circumscissa Sacc, shot-hole. Wash. 



Cladosporium carpophilum Thuem., scab. Ohio, Nebr., Pacific Northwest, 

 Coccomyces prunophorae Hig., leaf-spot. N. Y., Del., Nebr.. Pacific coast. 

 Coryneum beijerinckii Oud., blight. Wash., Oreg. 

 Exoascus pruni (Berk.) Fckl., pockets. Nebr. 

 Plowrightia morbosa (Schw.) Sacc, black-knot. Mich., Nebr. 

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



blossom blight. Wash., Oreg. 

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



brown-rot. Widespread. 

 Tranzschelia punctata (Pers.) Arth., rust. Nebr., Kans., Tex., Oreg., Calif. 



