450 Salmon : The Erysjphaceae of Japan 



Figs. 13, 14. U. Clintonii Peck, from specimens collected at Crawfordsville, Ind.. 

 U. S. A. (E. M Fisher) (Ex Herb. U. S Dept. Agric, no. 1055); 13, perithecium, 

 X 15° ; H, appendage. 



Figs. 15-17. U. Clintonii Peck, from specimens collected at Washington, D. C. 

 (P. Magnus ); 15, perithecium, X l 5° > J 6, appendage ; 17, ascus. 



Figs. 18-23. U. Clintonii Peck, from specimens collected at Winona, Minn. (J. 

 M. Holzinger) (Ex Herb. U. S. Dept. Agric.) ; 18, perithecium, X I S°; 19-22, a P* 

 pendages ; 23, ascus and spores. 



Fig. 24. Microsphaera Japonica P. Henn.; apex of mature appendage. 



Figs. 25, 26. M. aini (Wallr.) Salm., from specimens collected at Akabane, 

 Tokio (Nambu & Nishida) on Styrax Japonicum ; apex of two appendages from the 

 same perithecium. 



