EUTHALLEPHYTA—EUMYCETES— RUSTS 



223 



=J%. 



iwi 



\>'i; 



Fig. 61. Uredosori of Tickle Grass 

 Rust. {Puccinia emaculata). 



Fig. 61a. Teleutosori of Puccinia 

 coronata on leaf of oats. Sheath af- 

 fected with Puccinia graminis. 



