280 



Mycologia 



Diatrype americana Ellis & Everh. f. Ostryae Rehm. 



On Ostrya virginica. Fargo, August, 19 14, Stevens. 

 (Fungi Dak. 307.) 



Diatrype americana Ellis & Everh. f. Quercus Rehm. 



On Quercus macrocarpa. Delaney's Ranch, August, 191 5. 



Diatrype aster ostoma Berk. & Cooke. 



On Prunus melanocarpa. Leeds, July, 19 14, Lunell. 



Diatrype dakotensis Rehm, n. sp. 



On Salix. Kulm, December, 1914. 



Diatrype Hochelagae Ellis & Everh. 



On Acer Negundo. Kulm, August, 191 1. 



Diatrype linearis Ellis & Everh. f. Salicis Rehm. 

 On Salix. Kulm, December, 19 13. 



Diatrype radiata Ellis. 



On Ulmus americana. Kulm, October, 191 1. 



Diatrype stigma (Hoff.) DeNot. 



On Salix. Kulm, November, 19 13. 



Diatrype tristicha DeNot. 



On Rosa subnuda. Kulm, May, 19 13. 

 (Fungi Dak. 251.) 



Diatrype tumida Ellis & Everh. f. Populi Rehm. 

 On Populus tremuloides. Fargo, July, 1914. 



Diatrype tumida Ellis & Everh. f. Pruni Rehm. 

 On Prunus americana. Fargo, July, 19 14. 



Diatrypella Frostii Peck. 



On Corylus americana. Fargo, November, 19 16, Stevens. 

 (Fungi Dak. 428.) 



Didymosphaeria brunneola Niessl. 



On Apocynum hypericifolium. Kulm, November, 19 13. 



Didymosphaeria crastophila Niessl. 



On Andropogon scoparius. Kulm, November, 19 13. 



Dothidella ulmea (Schw.) Ellis & Everh. 



On Ulmus americana. Fargo, Spring, 19 14. 



(Better called " Gnomonia ulmea (Schw.) Thuem. see " Die Dothideales.") 



Ann. Mycol. 13: 325. 1915. 

 (Fungi Dak. 329.) 



Dimerosporium Collinsii (Schw.) Sacc. 



On Amelanchier alnifolia. Fargo, June, 19 15. 



Epichlae typhina (Pers.) Tul. 



On Koeleria cristata. Kulm, June, 1909. 

 (Fungi Dak. 54-) 



