2^% British UredinecE and Ustilagiiiecu 



Ustilago bromivora. (Tul.) 



Produced in the inflorescence, soon pulverulent, black. Teleuto- 

 spores spherical or oval, dark brown, obscurely punctate, 

 7-12 X 7-1 0/x. 



Synonytns. 



Ustilago carbo, var. bromivora. Tul., Anft. Sc. Nat., ser. iii., 

 vol, vii. p. 81. 



Ustilago bromivora, Waldh. Cooke, " Micro. Fungi," 4th edit., 

 p. 230. Winter, loc. cit., p. 91. Schrot., loc. cit., p. 260. 



On Bromus secalinus and mollis. 

 May and June. 



Biology. — See p. 83. 



** Teleutospores echinulate or verrucose, 



Ustilago maydis. (D. C.) 



Olive-brown, dusty, in the ovule and female inflorescence, and on 

 the stems and leaves. Teleutospores subglobose, rarely 

 elongate, pale brown, closely echinulate, 10-13 X 8-io/a. 



SynoJiym. 



Schrot., loc. cit., p. 271. Winter, loc. cit, p. 97. 

 Ustilago maydis, Corda. Cooke, " Hdbk.," p. 513; ''Micro. 

 Fungi," 4th edit., p. 230, t. v. fig. 108. 



£xsiccati. 

 Cooke, i. 433; ii. 431. 



On Zea mays. 

 September and October. 



Biology.— See p. 79. 



Ustilago vinosa. (Berk.) 



Spore-masses black, produced in the swollen flower-buds. Teleu- 

 tospores spherical, very pale violet, transparent, thickly covered 

 with large hemispherical warts, 10-12 x 7-10/A. 



