Notes on Some Melampsorae of Japan, t 



N. Hiratsuka. 



With Plate IV.i ' 



The substance of the following notes oa some Melampsorae of our 

 country was prepared, while the author was in the botanical laboratory 

 of Sapporo Agricultural College. The materials were mostly of my 

 own collections made during 1895-96 in the vicinity of Sapporo, and 

 also of those in the possession of Prof. Miyabe. Through the kindness 

 of Prof. Miyabe, I was able to examine.some of his manuscript species, 

 which were most generously placed in my hand for a comparative 

 study of this interesting group. 



I. Melampsora Idesiae Miyabe, Ms, 

 Plate IV. Fig. 1-3. 

 Uredospores. — Sori hypophyllotis, small, roundish, often united together, 

 spores round, ovate or oblong, 18-26/1 long, 15-L6 p broad, 

 echinulate ; contents orange-yellow; paraphyses numerous, 

 mixed with uredospores, 50-70 /x long, capitate or clavate, 16- 

 26 ft broad, hyaline or slightly yellowish-brown. (Figs. 1-2). 

 Teleutospores— Sori hypophyllous, compact, brownish, formed in flat 

 crusts; spores intercellular, cylindrical, 30-45// long, 7-11 jt 

 broad, truncate or oblique at apex, in cross-section polygonal ; 

 contents yellowish-brown. (Fig. 3.) 

 On Idesia polycarpa Maxim. (4 \*(f) Tokyo, (S. Hobi). 

 Remarks— The species under consideration was first collected by 

 Mr. S. Horn, in the Botanic Garden of the Imperial University, Tokyo, 

 iu October 1801, and was sent to Prof. Miyabe for identification. 



The leaves attacked by the fungus show on their upper surface, 

 numerous small dark-brown spots scattered over the whole surface, 



