EUTHALLEPHYTA EUMYCETES RUSTS 223 



Fig. 61. Uredosori of Tickle Grass 

 Rust. (Puccmia emaculata). 



Fig. 61a. Teleutosori of Puccinia 

 coronata on leaf of oats. Sheath af- 

 fected with Puccinia graminis. 





