190 DISEASES OF FIELD & GARDEN CROPS. [CH. 



The accompanying illustration, Fig. 88, is copied from 

 Tulasne's paper in the Ann. des Sc. Nat., 4 ser., vol. ii., 

 1854, pi. 9, and represents at A the germination of a 

 spore of Uromyces appendiculatus, Lev., and at E the ger- 

 mination of a spore of JEcidium Euphorbice-sylvaticce, D. C. 



PIG. 88. 



Spores of Uromyces appendiculatiis, Lev., and JEcidium Euphorbice-sylvaticce, 

 D.C., germinating and producing pro-mycelium, pro-mycelium spores, 

 and sporidioles of identical character. After Tulasne. 



The illustration is copied to show that, according to 

 Tulasne, not only is Puccinia capable of producing pro- 

 mycelium and pro-mycelium spores, as shown in Figs. 69 



