The Erysiphaceae of Nebraska 



25 



polygoni l 9 



spadacea 18 



Microsphaera 14 



alni 15 



alni vaccinii 15 



diffusa 16 



euphorbiae 14 



elevata J 5 



grossulariae 17 



quercina ... 1 S 



russellii 16 



symphoriearpi J 6 



Phyllactinia ll 



corylea ll 



guttata " 



suffulta " 



Synonyms are in italics. 



Sphaerotheca 9 



castagnei 1° 



humuli 10 



hamuli f ulginea 1 1 



mors-uvae io 



pannosa 9 



pruinosa 10 



Uncinula 12 



adunca 13 



ampelopsidis 12 



circinata 13 



intermedia 13 



macrospora 1 3 



necator 12 



salicis x 3 



spiralis I2 



LITERATURE 



Anderson, J. P. 



Iowa Erysiphaceae. la. Acad. Sci. Vol. 14. 



Bessey, Chas. E. 



The Erysiphei. 7 Bien. Rep. la. Agric. Col. 1877. 



Burrill, T. J., & Earle, F. S. 



Parasitic Fungi of Illinois. Bull. 111. State Lab. Nat. His- 

 tory. Vol. 2. 1887. 



De Bary, H. A. 



Ueber die Fruchtentwicklung der Ascomyceten. 1863. 



Earle, F. S. 



Notes on the North American forms of Podosphaera. Bot. 

 Gaz. 9. 1884. 



Ellis, J. B. & Everhart, B. M. 



North American Pyrenomycetes. 1892. 



Harper, R. A. 



Die Entwickelung des Peritheciums bei Sphaerotheca Cas- 

 tagnei. Ber. der Dent. Bot. Gesell. 13. 1895. 



83 



