234 IOWA ACADEMY OF SCIENCES. 



Specimens from Iowa. — Herb. Iowa State Colle ge (180 

 Cliuton, L. H. Pammel. 



The spore masses are quite hard and so compact as to be 

 easily sectioned. A cross section reveals the presence of a 

 portion of the plant tissues among which may be seen, 

 upon microscopical examination, the remains of the 

 mycelium. From this the spores are arranged basipetally. 

 Consequently it appears that this species belongs more 

 properly to the genus Cintractia. In 1896 Dr. P. Mangus 

 described Cintractia Seymouriana occuring on Panicum 

 crus-galli but his fungus affected only the culms and 

 leaves, and for this reason it appears to be different. So far 

 as known the species under consideration affects only the 

 ovaries. Hence this fungus occuring in the ovaries of P. 

 crus-galli has been provisionally transferred to the genus 

 Cintractia, as Cintractia sphan'ogena (Burrill.) 

 Cintractia Reiliana (Kuehn.) Clinton. 

 Host. — Sorghum sp. probably vulgare. 



Specimens from Iowa. — Herb. Iowa State College (55,) 

 Monticello, E. E. Reed. 



The fibro-vascular bundles of the affected portion remain 

 intact, serving as a sort of network in which the spores 

 are held. The specimen from which the above description 

 was drawn was collected in 1894 and is so far as known the 

 only one ever taken in the state. It is probably more 

 common than the number of specimens would indicate. 

 Tilletia Tul. Ann. Sci. Nat. Bot. 7:112. 1847. 

 Tilletia foetens Trelease. 

 Host. — Triticiim vulgare L. 



Specimens from Iowa. — Herb. Iowa State College (123) 

 Ames, (124) (125) Ames, L. H. Pammel; Ex. Herb. J. C. 

 Arthur (1776) Central Iowa, I. P. Roberts and A. N. Pren- 

 tiss; Decorah, E. W. D. Holway. Herb. C. E. Ball, Ames, 

 F. C. Stewart. 



Though no description of this species was published by 

 Berkeley and Curtiss until 1874, still specimen No. 100 in 

 Rav. Fung. Carol. 1 860 bears the name, Ustilago foetens B. 

 &C. 



