ON THE UREDINEAE PARASITIC OX THE JAPANESE GRAMIXEAE. 199 



In Hokkaido, this fungus occurs abundantly on wheat, causing great 

 damage. It is often found mixed \\-ith Puccinia glumariun, from which it 

 can easily be distinguished by the scattered brownish uredosori, and also by 

 the light brownish membrane of the uredosopore. Moreover, the teleutosori 

 o{ Piicc'uiia ghtinaniui are arranged in serial dots on the sheath, while those 

 oi Puccinia triticina ■s.x<:\xKKi'g\\\-3.x\y scattered; and also the teleutospores of 

 Puccinia triticina are generally not so long and unsymmetrical as those of 

 Puccinia gluniaruui. 



These distinguishing characters can readily be observed in fresh 

 materials, but in dried specimens it is somewhat difficult to distinguish them 

 from each other by the color of the uredosori, as the color is liable to fade 

 when dried. Also the streaked nature of the teleutosori in Puccinia gluviai-iini 

 often becomes indistinguishable when severely attacked, and moreover, 

 Puccinia triticina may rarely show the serial sori on the sheath. Con- 

 sequently, when a dried specimen is to be examined, great care is needed to 

 distinguish these two species. 



13. Puccinia Symphyti-Bromorum Fr. Müll., in Beihefte Bot. 

 Centralb., 10, 1901, (201) : Fischer, Ured. Schw., 1904, (359). 



Syn. : Puccinia bromina Eriks, in Ann. d. Sc. nat., 8 s, 9, 1899, (271) ; 

 Sydow, Monogr. Ured., 1, 1904, (712) ; Sacc, SylL, 17, 1905, (382) ; McAlpine, 

 Rusts of Australia, 1906, (116). 



Hab. On Bronius pauciflonis Hack. 



Honshu. — Prov. Rikuchü: Morioka (II. & III. Oct. 20, 1907. K. OKr-\iURy\). 

 Distrib. Europe, .Asia, minur, Japan and Austi-alia. 



Remarks. At first Eriksson (i) considered this species as a specialized 

 form oi Puccinia dispersa Eriks, et Henn. Later he regarded it as a distinct 

 species and named it /'//(■<://«'« ?*;-(7;///«(r Eriks. (4). In 1901, Fr. MÜLLER (i) 

 found the aecidial stage of the fungus by infection experiments and gave it 

 the name which I have adopted in this paper. Its presence in Japan has not 

 been known to us hitherto. A specimen, collected by Mr. Okumura, and 

 sent to me through the kindness of Prof. G. Yamada, agrees in nearly all ot 

 its characteristics to the present species. 



The aecidial stage of this fungus is not yet found in our country. 



