258 



THE FUNGI WHICH CAUSE PLANT DISEASE 



L tritici (Gar.) Pass "^ (=Pleospora tritici). On wheat. ^'* 

 Perithecia innate, globose, black, papillate; asci clavate, short- 

 stipitate, 8-spored; paraphyses filiform, 48-50 x 15-16 n; spores 

 2-seriate, round, fusoid, 3-septate, constricted, pale, 18-19 x 4.2- 



5.5. 

 L. herpotrichoides d. Not."'* parasitizes rye causing the stalks 



to break at the nodes; 



Fig. 189. — Cross-section of raspberry bark showing 

 two perithecia of L. coniothyrium at the top, A, and 

 two pycnidia of Coniothyrium fuckelii, at the bot- 

 tom, B. 4. An ascus of L. coniothyrium. 5. Spores 

 of L. coniothyrium. After Stewart. 



L. sacchari V. B. d H. occurs on sugar-cane. 



L. napi (Fcl.) Sacc. (=Sporidesmium exitiosum) is found on 

 rape; L. phlogis Bos. (=Septoria phlogis) on Phlox; 



L. circinans (Fcl.) Sacc. kills alfalfa roots, potato, clover, beets 

 and other hosts; "^ 



L. vitigena Schul. occurs on grape tendrils; 



L. stictoides Sacc. on Liriodendron; L. rhododendri on Rho- 

 dodendron; 



L. iwamotoi Miy. on rice; 



