Bui. 226, Bureau of Plant Inilustry, U. S. Dcpt. of AjT'icuKure. 



Plate XVIII. 



Fig. 1 .—Leaf of Wild Morninq-Glory Attacked by Albugo Ipomoeae-Panduranae. 

 Fig. 2.— Small Branch of Mountain Cedar, Showing the Gelatinous Sori of 



Gymnosporangium Exiguum. 

 Fig. 3.— Leaf-Curl of Trompillo Due to Nematodes. 



