Fic. 5.—pPUCCINIA RUBIGO VERA, DC. 
a, b,c, d, e, f, Teleutospores of various forms; g, 2, Teleutospores of Puccinia graminis, showing 
comparative size and form; z, Six Uredo spores of Puccinia rubigo vera ; 7, Three Uredo 
spores of Puccinia graminis, showing comparative size and form; #, Teleutospore of P. 
rubigo vera on Holcus, which has thrown out two promycelium tubes—May 25, 1882; Z, 
ditto, in which one upper cell only has germinated ; the lower cell is darker, from the endo- 
chrome still being retained in it— May 25, 1882; 2, Promycelium spores. 
From an electrotype supplied by “The Gardeners’ Chronicle.” 
