176 British Fungi. 



22; Plow. Brit. Ured. and Ustilag. p. 278; Sacc. 

 Sjll. vii. ii. 11. 1677; Cke Micr. Fung. ed. 4, p. 

 230. 



In tlie inflorescence of Bromus mollis, B. maximusy 

 B. secalinuSj B. madritensis. Xot uncommon. 



Ustilago maydis, Corda. 



Produced in the female inflorescence and on tlie 

 leaves and stem, soon becoming dusty, brown with, a 

 tinge of olive in the mass; resting-spores globose, 

 broadly elliptical, or sometimes elongated, pale, clear 

 brown, epispore thickly covered with minute, pointed 

 warts, 10-12 or 8-13 x 6-10 fu. ; promycelium fili- 

 form, cylindrical, septate, sporidia fusoid, springing 

 from the apex and laterally; in a nutritive solution 

 the budding spores are large, elongato-fusiform, 13-36 

 X 3-5 /jl. 



Ustilago maydis, Corda, Icones, vol. v. p. 3 ; Sacc. 

 Syll. vii. ii. n. 1723 ; Plow. Brit. Ured. and Ustilag. 

 p. 278; Cke. Hdbk. p. 513; Cke. Micr. Fung. t. v. , 

 f. 108. 



On Indian corn (Zea mays) . Rare in this country, 

 but too abundant where maize is extensively culti- 

 vated. 



Lstilago vinosa, Tul. 



Produced in the ovary and filling the fi'uit with 



a black powdery mass; resting-spores globose or 



broadly elliptical, very pale violet or sometimes 



colourless, epispore coarsely warted, 8-10, or 10-12 



X 7-9 /x. 



