43 



SEPTOEIA EUBI, West. Raspberry leaf spot. Not uncommon on 

 leaves of both wild and cultivated raspberries. It sometimes 

 becomes destructive. 



PIGGOTIA FEAXINI, B. & C. On leaves of green ash (Fraxinus 

 viridis). It forms irregular black patches on the leaves, and 

 though most plentiful on the fallen leaves, has been very de- 

 structive to the fresh ones this year. It has been one of the 

 chief agents in stripping the trees so early in the season. 



HYPHOMYCETES. 



OIDIUM EEYSIPHOIDES, Fr. Mildew. On leaves of turnip, caus- 

 ing them to appear as if covered with flour. Apparently not 

 injurious. 



RAMULAEIA AEMOEACIAE, FUCKEL. Leaf spot of horseradish, 

 (Nasturtium armoracia}. Frequently doing a great deal of 

 damage to the leaves. Many of these may be found with the 

 spots completely covering the surface; the whole leaf having 

 a whitened appearance. 



RAMULAEIA TULASNEI, Sacc. Strawberry leaf spot, or Straw- 

 berry blight. On leaves of both wild and cultivated straw- 

 berries, common. Some varieties of cultivated strawberries 

 are almost free from blight, while others are always more or 

 less affected. When a patch becomes infested with this fungus 

 all the affected leaves should be collected and burned. Some 

 growers recommend burning over the entire patch once 

 a year. This, however, should not be done if the ground is 

 very dry, but if the soil is moist and a good wind blowing, it 

 may do, great care is necessary at all times. 



SCOLECOTEICHUM MACULicoLA, Ell. & Kell. Causing spots on 

 leaves of reed grass, (Phragmites vulgaris}. 



CEECOSPOEA BETICOLA, Sacc. Leaf spot of beet. Common on 

 leaves of garden beet, frequently becoming quite injurious. 

 Causes the leaves to curl and dry up. 



CEECOSPOEA CIECUMSCISSA, Sacc. Leaf spot of cherry; gun shot 

 disease. On leaves of wild and cultivated cherries- The 



