Explanation of Plate XI. 



3irt. Puccxnia rhamni (Pers.) Wettst. — Eleven teleutospores and three ure- 



dospores. 

 p/,, « " " — One teleutospore and seven uredo- 



spores. 

 •, IC- i' " " — Five teleutospores and four uredo- 



spores. 

 ■j U l, •> " " — Seven tecidiospores and two peridial 



cells. 

 ?je. " " " — Seven aecidiospores and two peridial 



cells. 



