125 



20. UsTiLAGO Rabenhorstiana Kuhn. Hedwigia 15:4. 1876. 

 On Poaceae: 



Syntherisma sanguinale (L.) Dulac, Greencastle, Putnam County, 

 October 1892, L. M. Underwood, Ind. Biol. Surv. 5; Oakland City, Gib- 

 son County, October 5, 1916, H. S. Jackson; Michigan City, Laporte 

 County, September 13, 1916, H. S. Jackson and E. B. Mains; Lafayette, 

 Tippecanoe County, September 11, 1891, J. C. Arthur; West Lafayette, 

 Tippecanoe County, September 3, 19, 1915, H. S. Jackson; Paoli, Orange 

 County, September 27, 1915, H. S. Jackson; Marion, Grant County, 

 October 11, 1915, F. J. Pipal; Plymouth, Marshall County, September 

 12, 27, 1916, G. A. Osner; Goshen, Elkhart Co., October 10, 1916, G. A. 

 Osner; Evansville, Vanderburgh County, October 4, 1916, H. S. Jackson. 



Perhaps the most common, at least the most frequently collected 

 smut occurring on a native grass in our region. The entire infloresence 

 IS usually affected. 



21. USTILAGO SPERMOPHORA B. & C. Sacc. Syll. Fung. 7':466. 1888. 

 On Poaceae: 



Eragrostis major Host., Middletown, Henry County, September 30, 

 1915, H. S. Jackson. 



An inconspicuous but probably not uncommon species. 



22. UsTiLAGO sphaerogena Burrill, Sacc. Syll. Fung. 7": 468. 1888. 

 On Poaceae: 



Echinochloa Cms-galli (L.) Beauv., Blooming Grove, Franklin 

 County, September 7, 1913, C. A. Ludwig; Lafayette, Tippecanoe County, 

 October 5, 1909, A. G. Johnson, October 1, 1916, H. S. Jackson. 



23. Ustilago Tritici (Pers.) Rostr. Overs. K. Danske Vid. Selsk. Forh. 



1890:15. Mr. 1890. 



Uredo segetmn Tritici Pers. Tent. Disp. Fung. 57. 1797. 



On Poaceae: 



Triticiim vulgare (collective), Lafayette, Tippecanoe County, 1893, 

 J. C. Arthur (Und. Ind. Biol. Surv. 4), June 20, 1916, H. S. Jackson; 

 Greencastle, Putnam County, June 1893, L. M. Underwood; Brown 

 County, May 1893, L. M. Underwood; Crawfordsville, Montgomery 

 County, June 1892, M. B. Thomas; Wabash County, June 20, 1888, A. 

 Miller 18; Plymouth, Marshall County, June 29, 1916, G. A. Osner; 

 Petersburg, Pike Co., October 18, 1910, Blake A. Lamb; Mt. Vernon, 



