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fungus has not been plentiful enough to be very injurious. It 

 has been known to completely strip large groves of niaple 

 in Nebraska. June to September. 



BHYTISMA SALICINUM, Fr. Black leaf spot of willow. On liv- 

 ing leaves of diamond willow, (Salix cordata var vestita), 

 forming spots as described in the preceding. It was found 

 quite plentifully this season and did considerable damage. 

 July October. 



UBEDINEAE. THE BUSTS. 



UROMYCES TRIFOLII, (Alb. & Schw.) Winter. Clover rust. On 

 leaves of mammoth red clover (Tri folium pratense var.) 

 grown in the experimental plats on the College farm. It was 

 found but once and was not very plentiful but did considerable 

 damage to the host. 



MELAMPSORA FARINOSA, (Pers.) Schroet. Willow rust. Very 

 plentiful on the leaves of nearly all our common willows. 

 During the summer the leaves become covered with small 

 powdery spots of orange yellow spores. These spots become 

 brown or black later in the season. The fungus has been 

 very destructive this year, having much to do with the early 

 falling of the leaves. 



MELAMPSORA POPULINA, (Jacq.) Lev. Cottonwood or poplar rust. 

 Common on leaves of cottonwood (Populus monilifera) and 

 the various species of poplar growing on the college grounds. 

 Similar in appearance to the willow rust but not so injurious, 

 this year. A few trees were noticed badly damaged. 



PUCCINIA CORONATA, Corda. Oat rust. II and III on leaves, 

 sheaths and stems of oats. This rust occurred but rarely, 

 and did but little damage compared to the next. 



PUCCINIA GRAMINIS, Pers. Grain rust. II and III. Common 

 on wheat, cats and many grasses. It has not been very des- 

 tructive to small grains this year, as it appeared rather too 

 late. A few fields of late wheat were found that were more 

 or less damaged. It has been very destructive to the wheat 

 grasses, (Agropyrum glaucum, Ag. caninum, and Ag. ten- 



