6 BOTANICAL MAGAZINE. [Vol. xvm, 



thickening. When it occurs on the midribs or veins, the blade is distorted 

 in various ways. On the young stem it forms the cluster of aecidia on 

 one side of it, more than 20 mm. long, in which case a considerable 

 curvature may be caused, accompanied by an abnormal thickening on the 

 convex side (Fig. 1). When they once attacked by this fungus, the annual 

 growth of its branches and stems seems to be certainly greatly checked. 



Botanical Laboratory, Imperial University, Tokyo. 



EXPLANATION OF FIGURES IN PLATE I. 



Fig. I. One year old branch of Sophora platycarpa with a cluster of the 

 aecidia of Aecicliura Sophorce. Nat. size. 



Fig. 2. One year old branch of Sopliora japonica. a, primary sori of 

 Thorny ces tnincicola. b, primary uredosori of Uromyces Sophorce 

 japoniccp. c, secondary uredosori of the same. Nat. size. 



Fig. ?,. Uromyces Sophorce flcwescentis. a, uredospores. b, teleutospores. 



x400. 



Fig. 4. Uromyces truncicola. a, teleutospores from tree A. b, teleuto- 

 spores from tree B. x 400. 



Fig. 5. Uromyces Sophorce japonicce. a, teleutospores from tree A. b, 

 teleutospores from tn j e B. x 400. 



