58 BULLETIN 1366, IT. S. DEPARTMENT OF AGRICULTURE 



LARIX. 



L. europaea, European larch. 



Melampsora bigelowii Thuem., rust. N. Y., Ind. 



M. medusae Thuem., rust. Ind. 

 L. laricina, American larch, or tamarack. 



Fomes officinalis Fr., reddish brown-rot. Wis. 



F. pinicola Fr., brown crumbly rot. General with host. 



Melampsora bigelowii Thuem., rust. N. Y., Wis. 



M. medusae Thuem., rust. N. Y., Mich., Ind. 



Melampsoridium betulae (Schum.) Arth., rust. Wis. 



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



Razoumofskya laricis Piper, mistletoe witches'-broom. Idaho. 



R. pusilla (Pk.) O. Kuntze, mistletoe. Northern States. 



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

 Minn. 

 L. occidentalism western larch. 



Botrytis sp., seedling twig-blight. Idaho. 



Fomes officinalis Fr., reddish brown-rot. Mont., Idaho. 



F. pinicola Fr., brown crumbly rot. Idaho. 



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



Hypodermella laricis Tub., leaf-cast. Mont., Idaho, Oreg. 



Lophodermium laricinum Duby, leaf-cast. Idaho, Wash. 



Melampsora bigelowii Thuem., rust. Idaho. 



Polyporus berkeleyi Fr., string and ray rot. Idaho. 



P. schweinitzii Fr., red-brown butt-rot. Idaho. 



P. sulphureus (BuD.) Fr., brown-checked wood-rot. Idaho. 



Razoumofskya laricis Piper, mistletoe witches'-broom. Mont., Pacific North- 

 west. L . ggg 



Rhizina inflata (Schaeff.) Sacc, seedling blight. Idaho. 



Sparassis radicata Weir, yellow root-rot. Mont., Pacific Northwest. 



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

 Idaho. 



LATHYRUS. 



L. odoratus, sweet pea. 



Bacillus lathyri Manns and Taub., streak. Mass., N. Y., Pa., Del. 



Colletotrichum pisi Pat., anthracnose. S. C., Ga. 



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



Erysiphe polygoni DC., powdery mildew. General. 



Fusarium lathyri Taub., wilt, stem-rot. Conn., Mass., N. Y., Va., Fla., 



Ind., N. Dak. 

 F. martii pisi F. R. Jones, root-rot. N. Y. 

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



scatteringly east of Great Plains. 

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

 Microsphaera alni (Wallr.) Wint., powdery mildew. General. 

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



root-rot. Va. 

 Phytophthora cactorum (Leb. and Cohn) Schroet., root-rot. Conn. 

 Pythium debaryanum Hesse, root-rot. Conn. 

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

 Sclerotium rolfsii Sacc, stem-rot. Fla. 

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



Del., Ohio, Calif. 

 Mosaic, undet. Atlantic coast; Ohio, Wis., N. Mex. 



LAVATERA. 



Lavatera sp., treemallow. 



Colletotrichum malvarum A. Braun and Casp., anthracnose. Calif. 

 Puccinia malvacearum Bertero, rust. Calif. 



IESPEDEZA. 



*L. striata, Japan clover. 



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



Microsphaera diffusa Cke. and Pk., powdery mildew. S. C, Ala., Miss. 



