LIST OF DISEASES OF ECONOMIC PLANTS 69 



PANAX. 



P. quinquefolium, American ginseng. 



Alternaria panax Whet., blight. General; N. Y. to Minn, southward to 



Kans. and N. C. 

 Botrytis sp., gray-mold. Conn., N. Y., Mich., Wash. 

 Corticium vagum Berk, and Curt., stem-rot. N. Y., Wash. 

 Fusarium sp., wilt. N. Y., Ala., Ohio, Mo. 

 Heterodera radicicola (Greef) Muell., root-knot. N. Y., Pa., Ohio, Mich., 



Wis. 

 Pestalozzia funerea Desm., leaf anthracnose. Mo. 

 Phytophthora cactorum (Leb. and Cohn) Schroet., blight, downy mildew. 



Conn., N. Y., Pa., Ohio, Ind., Mich., Iowa, Wash. 

 Ramularia destructans C. L. Zinssmeister, root-rot. Wis. 

 R. panacicola C. L. Zinssmeister, root-rot. N. Y., Wis. 

 Sclerotinia panacis W. H. Rankin, black-rot. N. Y., Mich., Wis. 

 S. sclerotiorum (Lib.) Mass., white-rot. N. Y., Pa., Ohio, Mich., Wis. 

 S. smilacina E. J. Durand, black-rot. N. Y., Mich., Wis. 

 Thielavia basicola (Berk, and Br.) Zopf, black root-rot. General where 



ginseng is grown. 

 Vermicularia dematium (Pers.) Fr., stem anthracnose. N. Y., Va., N. C, 



Tenn., Ohio, 111., Minn., Mo. 

 V erticillium alboatrum Reinke and Berth., wilt. N. Y., Pa., N. J., Tenn., 



Ky., Ohio, Mich., Ind. 

 Damping-off, associated with various fungi. General. 

 Papery leaf-spot, nonpar. N. Y., Mich. 

 Soft-rot, undet. N. Y., Pa., Ohio, Ind. 



PANICUM. 



P. miliaceum, proso millet, broomcorn millet. 



Bacterium panici C. Elliott, bacterial stripe. Wis., S. Dak. 



Fusarium rhizochromatistes C. P. Sideris, root-rot. Calif. 



Phyllachora graminis (Pers.) Fckl., black-blotch. Tex. 



Piricularia grisea (Cke.) Sacc, leaf-spot. Minn., Ohio. 



Puccinia emaculata Schw., rust. Ind. 



Sclerospora graminicola (Sacc.) Schroet., downy mildew. Wis., Minn., Iowa, 



N. Dak., S. Dak. m 



Sorosporium syntherismae (Pk.) Farl., smut. N. J., Wis., Minn., Mo., 



N. Dak., Nebr. 

 Ustilago panici-miliacei (Pers.) Wint., smut. N. Dak., Colo., Wash. 



PARKINSONIA. 



P. aculeata, parkinsonia. 



Cylindrosporium parkinsoniae Heald, leaf-spot. Tex. 

 Dimerosporium parkinsoniae Heald and Wolf, sooty mold. Tex. 

 Phyllosticta parkinsoniae Ell. and Ev., leaf-spot. Tex. 



PASTINACA. 



P. saliva, parsnip. 



Bacillus carolovorus L. R. Jones (Erwinia carotovora (Jones) Com. S. A. B.), 

 soft-rot. Conn., Mass., Minn. 



Bacterium tumefaciens EFS. and Town. (Phytomonas tumefaciens (EFS. and 

 Town.) Com. S. A. B.), crown-gall. Va. 4 



Cercospora apii pastinacae Farl., leaf -spot. North Atlantic and North- 

 Central States. 



Corticium vagum Berk, and Curt., stem-rot. Tex., Wash. 



Heterodera radicicola (Greef) Muell., root-knot. Va., Ala., La., Ohio, Ind., 

 Kans. 



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

 rot. Tex. 



Ramularia pastinacae (Karst.) Lindr. and Vester., leaf-spot. N. Y., Ind., 

 N. Dak. 



Sclerotinia sclerotiorum (Lib.) Mass., watery soft-rot. Ind. 



Septoria pastinacina Sacc, leaf-spot, blight. N. Y., Utah. 



