v:;^r^ 



lh.\MtYl6^ 



Fig. 113. Head smut of sorghum (Ustilago Reiliana). 1, 2, 3, J, germination in 

 water after three days; 5, after forty-eight hours in water. A. with detached conl- 

 dium, showing point of attachment; 0, conidia from another spore; 6, 7, spores ger- 

 minating thirty-six hours after. (Norton. Kansas Agrl. Exp. Sta.) 



