12 



UsTiLAGO HoRDEi (Pers.) Kell. & Sw. 



In ovaries of Hordeum sativum, Barley. Common. Burl., Sept. 

 1890; C. 1125. 



USTILAGD LONGISSIMA (Sovv.) Tul. 



On leaves of Glyceria grandis. Johnson, July, 1894; G. 714. Burl., 

 June, 1898; J. 1372. 

 UsTiLAGO Maydis (DC.) Corda. 



On staminate and pistillate flowers of Zea Mays, Indian Corn. Burl., 

 Aug. 1897; O. 1203. Common but not usually abundant enough to 

 cause serious loss. 



USTILAGO NEGLECTA Niessl. 



In ovaries of Setaria glauca, Foxtail. Common. Burl., 1890; J. 

 1128. Newfane, Aug. 1892; G. 75. 



USTILAGO SEGETUM (Bull.) Dittm. 



On Arrhenatherum avenaceum. Tall Oat-grass. Abundant and in- 

 jurious. Burl., June, 1898; J. & O. 1397. 



UsTiLAGO Tritici (Pers.) Jensen. 



In ovaries of Triticum vulgare, Wheat. Not common. Burl., July, 

 1892; J. 1129. 



USTILAGO UTRICULOSA (NeeS.) Tul. 



In ovaries of Polygonum Pennsylvanicum, Smartweed. Vernon, 

 Sept. 1895 ; G. 84. 



In ovaries of Polygonum hydropiperoides. Fuorna Mt., Sept. 1893 ; 

 Eggleston, 1202. 

 USTiLAGO viOLACEA ( Pers.) Fuckel. 



In ovaries Arenaria Groenlandica, Mountain Sandwort. Mt. 

 Mansfield, Aug. 1898; J. 1878. 



UREDINE^. 



Aecidium Asterum Schw. 



On Aster cordifolius. Burl., July, 1897; O. 1216. 

 On Aster corymbosus. Burl., June, 1897; O. 1217. 



Aecidium Clematidis DC. 



On Clematis Virginiana, Virgin's Bower. Johnson, July, 1893 ; G. 1. 

 Starksboro, June, 1895; J. 1218. 



Aecidium Compositarum Burrill. 



On Prenanthes sp. Burl., July, 1898; O. 1790. 



Aecidium EuPHORBiiE Gmel. 



On Euphorbia Preslii. Usually accompanied by Uromyces Euphor- 

 bia- C. & P. Burl., Aug. 1891 ; J. 1219. 



