366 



STATE BOARD OF AGRICULTURE. 





Fig. 18.— Peach leaf curl sliowing healthy and diseased foliage. (Taft.) 



Fig. 19.— Micro.scopic structure of leaf-curl fungus, a, portion of section through 

 ^atTected leaf, showing tiie spore .sacs (asci), a, .seated on cells of the leaf; b, two spores 

 budding like yeast cells: c, fragments of mycelial threads from tissue of affected leaf all 

 highly magnified. (Original.) ' 



