142 IOWA ACADEMY OP SCIENCES. 



We have followed Saccardo (Sylloge Fangorum) in the 

 arrangement of orders, genera and species, and in most cases 

 have used the syncnomy given by him. 



USTILAGINEAE. 



Ustilago hypodytes (Schlecfch.) Fr. 



Very abundant. On Stipa spartea. 

 r. tritici (Pers.) Jensen. 



Not uncommon and was frequent in 1894 on Triticum vul- 

 gare. 

 r. horclei (Pers.) Kellerman and Swingle. 



Common on Hordeum vulgare. 

 r. niida (Jensen) Kellerman imd Swbgle. 



Scarce on Hoi deum vulgare. 

 r. avenue (Pers.) Jensen. 



Not uncommon on Avena sativa. 

 U. segetum (Bull) Dittm. 



Common on Arrhenatherum avenaceum. 

 U. neglecta Niessl. 



Abundant on Setaria glauca. 

 U. Rahenhorsticma Kuhn. 



On Panicum sanguinale abundant. 

 U. matjdls (D. C.) Corda. 



Abundant on Zea mays. 

 U. pustulata Tracy & Earle. 



Locally abundant in one place, first time observed on 

 Panicum proliferum. 

 TtUetia-strkeformis (Westend.) Magnus. 



Not abundant on Pnleum pratense. 

 T. foelens (B. & C.) Trelease. 



Not observed in 1895. 

 Sdiizonella mekmograuuna (D. C.) Schroet. 



Abundant in May, Moingona. 

 jSorosjJorium syntherisuHe (Schw.) Farlow. 



Abundant on Panicum capiliare. 

 Urocystis Agropyri (Preuss) Schroet. 



Abundant in June and early July on Elymus Canadensis. 



UREEINE.^. 



Uromyces Polygoni (Pers.) Fuckel. 



Abundant August aud September on Polygonum aviculare 

 and P. erectum. 



