

LIST OF DISEASES OF ECONOMIC PLANTS 67 



NARCISSUS. 



Narcissus sp., narcissus, jonquil. 

 Botrytis sp., blight. Wash. 



Tylenchus dipsaci (Kuehn) Bast., bulb nematode. 111., Oreg., Calif. 

 Mosaic (gray disease), undet. Wash. 



NERIT7M. 



N. oleander, oleander. 



Bacterium savastanoi EFS. (Phytomonas savastanoi (EFS.) Com. S. A. B.), 



gall. Ariz. 

 Cercospora neriella Sacc, leaf-spot. La., Tex. 

 Macrosporium nerii Cke., leaf -spot. Ga., Fla., Miss., Calif. 

 Phyllosticta nerii West., leaf-spot. Fla., La., Mich. 

 Septoria sp., specked leaf-spot. Fla. 

 S. oleandrina Sacc, leaf-spot. Fla., La. 



NICOTIANA. 



N. tabacum, tobacco. 



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



hollow-stalk. Conn. 

 Bacterium angulatum F. D. Fromme and T. J. Murray, angular leaf -spot, 



black-fire. Mass., Conn., N. Y., Md., Va., N. C, S. C, Tenn., Ky., 



Ind., Wis. 

 B. melleum James Johnson, bacterial leaf-spot. Ky., Wis. 

 B. solanacearum EFS. (Phytomonas solanaceara (EFS.) Com. S. A. B.), bac- 

 terial wilt, Granville wilt. Southern States; Ohio. 

 B. tabacum Wolf and A. C. Foster (Phytomonas tabaca (Wolf and Foster) 



Com. S. A. B.), wild-fire. General. 

 Cercospora nicotianae Ell. and Ev., frog-eye. Atlantic Coast States; Wis., 



Tex. 

 Corticium vagum Berk, and Curt., sore-shin. General. 

 Fusarium affine C. M. Slagg, leaf-spot. Conn., Ky., Wis. 

 F. oxysporum nicotianae James Johnson, wilt. Md., Ohio, Ky., Tenn. 

 Heterodera radicicola (Greef) Muell., root-knot. Southern States. 

 Macrosporium longipes Ell. and Ev., brown-spot. Pa., N. C, Mo. 

 M. tabacinum Ell. and Ev., white-speck. Mass., Conn., N. C, Ohio, Mo. 

 Olpidium sp., seedling blight. Wis. 

 Orobanche ramosa L., broom-rape. Ohio, Ky. 

 Peronospora hyoscyami D By., downy mildew. Ga., Fla. 

 Phyllosticta nicotiana Ell. and Ev., leaf-spot. Mass., Va., N. C. 

 Phytophthora nicotianae (Speg.) Van Breda de Haan, black-shank. Ga., 



Fla. 

 Pythium debaryanum Hesse, damping-off. General. 

 Sclerotinia sclerotiorum (Lib.) Mass., stem-rot. Conn. 

 Sclerotium rolfsii Sacc, stem-rot. N. C. 



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

 Brown root-rot, undet. Mass., Conn. 

 Frenching, undet. Va., N. C, Ky., Ohio, Wis. 



Leaf -spots including "rust," firing, ring-spot, etc., nonpar. Widespread. 

 Mosaic, undet. General. 

 Sand-drown, nonpar. N. C. 



NYSSA. 



N. aquatica, big tupelo. 



Aplopsora nyssae (Ell.) E. B. Mains, rust. Miss. 



Phyllosticta nyssae Cke., leaf-spot. Ga., Ala. 

 N. sylvatica, *sour gum, tupelo, *pepperidge. 



Leptothyrium dryinum Sacc, leaf -spot. Ala. 



Phoradendron flavescens (Pursh) Nutt., mistletoe. Tex. 



Phyllosticta nyssae Cke., leaf-spot. N. Y. 



Pirostoma nyssae L. R. Tehon, leaf-spot. 111. 



OIEA. 



0. europaea, olive. 



Armillaria mellea (Vahl) Quel., root-rot. Calif. 



Bacterium savastanoi EFS. (Phytomonas savastanoi (EFS.) Com. S. A. B.), 

 knot. Calif. 



