North Dakota Fungi 



281 



Erysiphe Cichoracearum DC. 



On the following hosts at various places: Aster longifolius, A. multiflorus, 

 A. paniculatus, Ambrosia trifida, Artemisia longifolia, Circium Flood- 

 mani, Grindelia squarrosa, Helianthus annuns, H. Maximiliani, H. 

 tuberosus, Hydrophyllum virginicum, Iva xanthiifolia, Lactuca scariola, 

 L. spicata, Plantago asiatica, P. major, Ratabida columnaria) Solidago 

 Canadensis, S. mollis. 

 (Fungi Dak. 139, 277, 2772., 161, i6isl, 308, 308a, 308.) 



Erysiphe Cichoracearum f. Galeopsidi (DC.) Salmon. 

 On Stachys palustris. Kulm, August, 191 1. 

 (Fungi Dak. 162.) 



Erysiphe communis (Wallr.) Fries. 



On Anemone canadensis. Kulm, September, 19 14. 



On Glycyrhiza lepidota. Berg, September, 1914, Stevens. 



(Fungi Dak. 300, 509a.) 



Erysiphe graminis DC. 



On Poa pratensis. Fargo, October, 19 14, Stevens. 



Erysiphe Polygoni DC. 



On Polygonum aviculare, P. erectum, Ranunculus abortivus, R. cymbalarius, 



Thalictrum purpurascens. Fargo and Kulm, Stevens and Brenckle. 

 (Fungi Dak. 34, 121, 310, 378.) 



Entypa astera (Nitsch.) Fuckel. 



On Quercus macrocarpa. Fargo, July, 19 14. 

 (Fungi Dak. 311.) 



Eutypa Fraxini (Nitsch.) Sacc. 



On Fraxinus lanceolata. Kulm, December, 19 13. 



Eutypa lata (Pers.) Tul. 



On Prunus americana and Quercus macrocarpa. Kulm and Fargo. 

 (Fungi Dak. 163, 357.) 



Eutypa nitida Nitsch. 



On Salix. Kulm, September, 191 1. 

 (Fungi Dak. 164.) 



Eutypa scabrosa (Bull.) Auersw. 



On Fraxinus lanceolata. Wirch Lake, May, 19 14. 

 -On Salix. 



Eutypa velutina (Wallr.) Sacc. 



On Salix. Kulm, October, 191 1. 



Eutypella angulosa Nitsch. f. Negundinis Rehm. 

 On Acer Negundo. Kulm, September, 191 1. 

 (Fungi Dak. 165.) 



Eutypella angulosa Nitsch. f. Fraxini Rehm. 



On Fraxinus lanceolata. Fargo, July, 19 14. 



Exoascus deformans Fuckel. 



On Prunus americana, P. melanocarpa, and P. Bessii. Kulm and gen- 

 eral in the state. 



