LIST OF DISEASES OF ECONOMIC PLANTS 79 



PINUS— Continued. 

 P. taeda, loblolly pine. 



Coleosporium apocynaceum Cke., rust. Fla. 



C. carneum (Bosc) Jack., rust. Southeastern States, N. J., Ark. 



C. delicatulum (Arth. and Kern) Hedge, and Long, rust. Va., N. C, S. C , 



Fla., Tex. 

 C. elephantopodis (Schw.) Thuem., rust. South Atlantic and Gulf States. 

 C. ipomoeae (Schw.) Burr., rust. Southeastern States. 

 C. laciniariae Arth., rust. Fla. 

 C. pini Gall., rust. Md. 



C. solidaginis (Schw.) Thuem., rust. Southeastern States. 

 C. terebinthinaceae (Schw.) Arth., rust. S. C., Ala. 

 Cronartium cerebrum (Pk.) Hedge, and Long, oak-rust. Fla., Ala., Miss., 



La. 

 C. comptoniae Arth., sweet-fern rust. N. J., Ga. 

 C. pyriforme (Pk.) Hedge, and Long, rust. N. J. 

 Fomes annosus Fr., white spongy rot. New England. 

 F. pinicola Fr., brown crumbly rot. 



Lophodermium pinastri (Schrad.) Chev., needle cast. La. 

 Peridermium minutum Hedge, and Hunt, rust. Fla. 

 Polyporus schweinitzii Fr., red-brown butt-rot. 

 Septoria acicola (Thuem.) Sacc, leaf-spot. Fla. 



Trametes pini (Brot.) Fr. (Fomes pini (Thore) Karst.), honeycomb rot. 

 P. virginiana, scrub pine. 



Coleosporium helianthi (Schw.) Arth., rust. Pa. to Ga. 

 C. inconspicuum (Long) Hedge, and Long, rust. Md. to Ga. 

 C. pini Gall., rust. Middle Atlantic States, Tenn. 

 Cronartium cerebrum (Pk.) Hedge, and Long, oak-rust. Pa. to Ala. 

 C. comptoniae Arth., sweet-fern rust. Md. 

 Fomes pinicola Fr., brown crumbly rot. 

 F. roseus (Alb. and Schw.) Fr., brown pocket rot. 

 Lophodermium pinastri (Schrad.) Chev., needle cast. Md. 

 Polyporus schweinitzii Fr., red-brown butt-rot. 



Trametes pini (Brot.) Fr. (Fomes pini (Thore) Karst.), honeycomb rot. Md., 

 Ga. 



PISUM. 



P. sativum, pea. 



Aphanomyces euteiches Drechs., root-rot. Conn., N. Y., Pa., N. J., Del., 



Md., Ohio, Ind., 111., Mich., Wis., Mont., Utah, Idaho, Calif. 

 Bacillus lathyri Manns and Taub., bacterial streak. Del. 

 Bacterium pisi (W. G. Sackett) EFS. (Phytomonas pisi (Sack.) Com. S. A. B.), 



bacterial blight. N. Y., Pa., Del., Md., S. C, Fla., 111., Ind., Mich., Wis., 



N. Dak., Colo., Mont., Oreg. 

 Collet otrichum pisi Pat., anthracnose. Wis. 

 Corticium vagum Berk, and Curt., stem-rot. Widespread. 

 Erysiphe polygoni DC, powdery mildew. General. 

 Fusarium martii minus Sherb., stem-rot. Widespread. 

 F. martii pisi F. R. Jones, root-rot. Widespread. 

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

 Isariopsis griseola Sacc, leaf-spot. R. I. 

 Mycosphaerella pinodes (Berk, and Blox.) R. E. Stone (Ascochyta pisi Lib,), 



blight. General. 

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



root-rot. Tex. 

 Peronospora viciae (Berk.) D By., downy mildew. N. Y., Pa., Del., Md., 



Tenn., Wis., Iowa, Kans., Oreg., Calif. 

 Phytophthora cactorum (Leb. and Cohn) Schroet., blight. Conn. 

 Pythium spp., root-rot. Conn., Del., 111., Mich., Wis., Mont. 

 Sclerotinia sclerotiorum (Lib.) Mass., stem-rot. Pa., Del., Fla. 

 Septoria flag ellif era Ell. and Ev., leaf-spot. Wis., S. Dak. 

 S. pisi West., leaf-spot. North of Ohio and Missouri Rivers; Tex., Mont., 



Colo., Calif. 

 Thielavia basicola (Berk, and Br.) Zopf, black root-rot. Conn., N. Y., Pa., 



Md., Ark. 

 Uromyces fabae (Pers.) D By., rust. Minn., N. Dak., Nebr. 



