8$ 



the name of Phacopsora Vitis Syd. The characters hy which it can be 

 distinguished from Ph. Aaipelopsid is Diet, et Svd., according to him, are 

 as follows :— 



(1) Uredospores elongated. (2) Teleutosporesori are not funned sur- 

 rounding an uredosorus in group. (3) Size of teleutoepores somewhat 

 greater. 



According to my study of the large number of the specimens, I came 

 to the conclusion that there is no good reason to make two distinct species 

 ot ritc.rojjsora parasitic on the related species of Vitacece. 



In the present contribution one more species is added to the genus. 



Phacopsora Ampelopsidis Diet, et Syd. 



Syn. Ph. Vitis Syd. 



Uredo Vitis Diet. (non. III. Thnmen)« 

 ft III. Fig. 1-9. 



Uredospores. — Sori mostly hypophyllous, small, scattered or irregularly 



the sori and also intermixed, elavate or somewhat swollen at the top, 35- 

 60// long; spores obovate or long elliptical, 18-26 p long 12-15// broad, 

 episjwre colorless, finely echinulate, contents yellowish-orange. 



Teleutospores.— Sori mostly hypophyllous, sm dl, covered bj tlx epider- 

 mis, separate or united together, formed either surrounding uredosori or 

 independent of them, at first yellowish-brown, wax-like, at last dark-brown, 

 45-75 fx thick; spores in many layers (3-5, rarely 6), closely united together 



30 ;x long, 11-15// broad, others somewhat cubical, epispore brownish, 

 smooth, sometimes uppermost ones slightly thicker walled at apex. 

 Hah. On Ampelopsis heterophil la Slab, et Zucc. {Nobudo) : 



Hirosaki, Prov. Mutsu, Oct. 5, 1896, (II, III.), (N. Hiratsuka!); 



Morioka, Prov. Rikuchu, Oct. 11, 1897, (II, III.), (Y. Takahashi!); 



