USTILAGO. 289 



Ust. secalis Ifabenh. IJye-brand. This occurs but rarely, 

 and destroys only the grain. 



Ust. panici-miliacei (Pers.) {Ust. destruens Duby). Sniut 

 of Millet. This smut occurs on the flowers of Panicnm milici- 



Flfi. \h9.—Vstilac,o liordci. Barley-smut on Honleum distichum. (v. Tubouf phot.) 



ccum, P. chartafjiniense and P. Crus-r/aUi in Italy, France, 

 Germany, and North America. Sometimes it is very abundant 

 and causes great damage. The mycelium makes its way into 

 young plants and grows upwards with them, penetrating' every 



T 



