160 Proceedings of Indiana Academy of Science. 



the type of T. Thorn'beri could be examined. Through the courtesy of Dr. 

 Griffiths, two collections of his species, one of which was the type, were 

 furnished for study. 



The Iresine smut was found to be very closely related to T. Thornberi 

 but to differ in several important respects. The sori, while involving the 

 ovaries, are not usually confined to them, as described for T. Thornberi. 

 but are indefinite, involving the ovaries and apparently the parianth of 

 single flowers or groups of flowers and also occasionally the rachis. The 

 spore balls are much smaller in the species under discussion, measui'ing 

 40-75U in globoid balls, reaching 90u in occasional ellipsoid balls, while in 

 T. Thornheri the globoid balls are 80-115u in diameter, reaching 145u in the 

 ellipsoid ones. The spores are also somewhat larger and the markings more 

 prominent than in T. Thornheri. 



In the meantime the species was described as Toli/posparium Iresine 

 by Dr. J. A. Elliott (I.e.). of Fayetteville. Arkansas, from the same material, 

 obtaining it through Prof. B. W. Wells to whom Mr. Deam had sent speci- 

 mens under the impression that the galls might be caused by insects. The 

 species obviously belongs in Thecaphora rather than in Tolyposporium and 

 the transfer was made by the writer in a recent paper (I.e.). 



The second collection made by Mr. Deam in 1920 at the type locality is 

 ample and shows a great variation in the point at which the host is attacked 

 and the degree of development (c. f. Fig. 1). 



49. Tolyposporium bullatum Schrot. Krypt. Fl. Schles. 3' :27G. 1887. 

 On Poaceae : 



Echinochloa Crus-galU (L.) Beauv., one mile northwest of Thayer, near 

 Kankakee river, Newton Co., Oct. 14, 1920 ; one-half mile south of Wilders 

 Station, Laporte Co., Oct. 5, 1920. 



Echinochloa Walta-i (Pursh) Nash, one mile northwest of Thayer, near 

 Kankakee river. Newton Co., Oct. 14, 1920. 



The sori of this species occur in occasional ovaries of the grass and are 

 ovate, 3-5 mm. in length, and covered by a thin, smooth, greenish membrane. 

 The sori rupture irregularly disclosing the (/ranular mass of black spore 

 balls. It is not as common as Ustilago sphaerogena Burrill (c. f. No. 22 of 

 1917 list), but may occur with it in the same inflorescence. The two species 

 are easily distinguished in the field. In U. sphaerogenn the sori are 

 usually larger. 3-9 mm. in length and are covered by a tough, hispid, gray- 

 ish-green membrane, which on rupturing discloses an agglutinated or dusty 

 olive-brown spore mass. 



50. Ustilago Hieronymi Schrut. in P. Henn. Hedwigia 35 :213. 1896. 

 On Poaceae : 



Bouteloua curtipendiila (Michx.) Torr., Bayles Mill, Wea Creek, Tippe- 

 canoe Co., Sept. 15, 1920, with E. B. Mains. 



This is a common smut west of the Mississippi river, but has not before 

 been collected, to our knowledge, so far east. 



51. Ustilago residua Clinton. Jour. Myc. 8 :133. 1902. 

 On Poaceae : 



Danthonia spicata (L.) Beauv. In a woods two miles south of Corydon 

 Junction, Harrison Co., May 26, 1919, C. C. Deam 27681. 



