Fig. 124. Rusts of grasses. I, Spartlna ruits i I'mtni/ces acuminntiix) on spartlna cynosuroldes; 

 2, teleuto spores of orchard grass rust (Uromyces daclylidU> uredo spores at a: :!. teleuto spores of 

 LVomj/es potc, uredo spores at a on Poa; 4, Puccinia cornnata on Rlinmnus cathii-tica; ■'>. aecidlum 

 of Puccinia graminin on barberry, a and h, spores magnified; '>', 7, Puccinia gramlnia; S, aecld 

 lum of Puccinia oraminia, the cup below spermogoala ab)ve h spores, a perldlal cell. (Pammel 

 and King.) 



