131 



lieaf diseases, aft'octiug :issiinil;itii>!i and transpiration — 



Rusts, caused by nri'dineae (Cyninosporangiuni sui).). On apple, 

 pear, quince and red cedar. Not rejiorted as very destructive 

 ou cultivated ai)ples : coaunon on wild crabs or thorns. 



(Puccinia rul)ii;o-vera.) On wheat. This is the leaf rust and is 

 usually i-onunon, but not especially injurious. 



(Puccinia gramlnis.) On wheat and other cereals. This is the 

 stem rust and only rarely occurs to any extent on the leaves, 



(I'uccinia carouata.) On oats. Occurs very commonly ou leaves, 

 but is not accountable for losses of any extent. 



(Urom.yces trifalii.i On clover. IS'ot known to be of much eco- 

 nomic importance, thou,iih quite connnon. 



(Puccinia poarum. ) On bine-grass, often in lawns. 



(Puccinia sarghi.) On corn. Very widespread and common, but 

 not especially injurious. 



(Gymnoconia iuterstitialis.) On blackberry and raspberry, called 

 the orange leaf rust. Has a perennial mycelium, but mani- 

 fests itself only in the leaves. Connnon and distructive. 



(Kuehneola albida.) On blackberry and raspberry. First noticed 

 this season. IS'ot of importance. 



(TJromyces appendicnlatus.) On be;!ns. Extent and damage un- 

 known. 



(Uromyces caryaphyllacearnm.) On carnations in greenhouses. 



(Puccinia chrysanthemi.) On chrysanthemums in greenhouses. 

 Spots and Blights — 



(Phylosticta spp.) On apple, often causing premature defatiation. 



(Cyliiidrosporium padi.) On cherry and plum. Not unconnnon. 



(Septoria ribes.) On gooseberry and currant. Extent unknown; 

 crop of minor imiwrtance. 



(Se])toria lycosjiersici.) On tomato. Very injurious in some lo- 

 calities. 



(Cercospora beticola.) On beets. Two rejjorts have been received. 



(Atternariae brassicae nigressceus.) On muskmellons. This is 

 kno\'in as the leaf blight and is very injurious in some lo- 

 calities. 



(Calletobuchnm Lagenarium.) On melons. Known as anth- 

 raenace, and while affecting leaves, usually attacks stems and 

 catyledons of young plants. Reported by several horticul- 

 turists. 



