xxvi.] NEW DISEASES OF WHEAT, ETC. 



211 



W.Sm., is shown at Fig. 94. It will be noticed that 

 many of the spores have broken up, as in the last, and 

 formed little globular spores of a second series, as at AA. 

 These are destined to rest for a short period. Other of 

 the spores, as at BB, are germinating whilst still attached 

 to their supporting threads, a common phenomenon in the 

 genus Fusisporium. A single spore is enlarged to 1000 

 diameters at C. The cells at D belong to the flowering 

 glume. Mr. Matthews states that the spawn of the fungus 



X-.400 



x-iooo 



FIG. 94. 



Fusisporium hordei, W.Sm. Enlarged 400 diameters. 

 Spore enlarged 1000 diameters. 



will run over paste made of crushed germinating barley, 

 and throw up red patches from half an inch to three- 

 quarters of an inch high. The fungus is said chiefly to 

 invade barley of poor quality and ill-conditioned crops 

 and ears, seldom or never appearing on good sound barley. 

 The germinal end of the grain is distinctly the part most 

 seriously attacked, perhaps because it is the softest, being 

 the spot whence the plumule and radicle of the young 

 plant is destined to emerge. It is clear that no badly 



