SMUTS. 89 



developmenfc througL. successive generations of tlie 

 ^^ bunt ^^ spores, but enough, is known, on the one 

 hand, to show that this is a true vegetative parasite, 

 and not merely a diseased condition of the tissues 

 of the wheat plant, and on the other that it is 

 perfectly distinct from all the phases of the other 

 and similar parasitic fungi which ajBfect the wheat 

 crop. 



