Norton — The Kansas Ustilagineae. 233 



grows rapidly for 8 or 10 hours until 30 or 40 // long, then 

 a conidium is formed at the apex, 3 or 4 septa appear in the 

 promycelium and a part of the protoplasm in each cell thus 

 formed passes into a lateral conidium at its upper end leaving 

 a vacuole at the end next the spore. The conidia soon become 

 detached. ' 



In nutrient solutions the germination is much similar but 

 slower and more vigorous. 



10. U. SPERMOPHORA Berk. & Curt., Curt. Cat. N. Car., p. 123. 

 In the enlarged ovaries of Erogrostis major. In the speci- 

 mens I have seen, only a few of the ovaries are smutted in 

 each inflorescence and not the whole panicle as in most smuts 

 of this kind. 



Attempts at germination unsuccessful. 



11. U. ViLFAE Wint., Bull. Torr. Bot. Club, X. p. 7. (!) 

 Destroying the inflorescence of Sporobolus vaginaejlorus. 



Found at Manhattan, Dec, 1895. 



Cultures of spores failed to germinate. 



12. U. Rabenhorstiana Kiihn, Hedwigia, 1876, p. 4, ( ! ) 

 (Plate XXVII. 6-8, and XXVI. 4, 5.) 



Common in the inflorescence of Fanicum sanguinale and 

 less often on P. glabrum. Every branch of the plant is 

 usually smutted, a good evidence of early infection. On the 

 latter host often only a portion of the inflorescence is infested. 

 The smut dwarfs the host plant and causes it to branch more 

 than normally. 



No germination in water. In nutrient solutions the growth 

 is vigorous and the promycelium branched often and irreg- 

 ularly, not septate, no conidia. Germinated by Kiihn and 

 Brefeld. Kiihn gives figures of the germination in Raben- 

 horst's Fungi Europaei, Cent. 21. 



13. U. Reiliana Kiihn, Rabenh. Fungi Europaei, No. 1998. 

 ( !) (Plate XXV. 14-18.) 



On Sorghum sp., Manhattan ; and on Zea Mays, Riley, 

 Morris, Saline, Jewell, and Geary counties; rather common. 



