ON THE UREDlNEAE PARASITIC ON THE JAPANESE GRAMINEAE. 199 
In Hokkaido, this fungus occurs abundantly on wheat, causing great 
damage. It is often found mixed with Puccinia glumarum, 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 
of Puccinia glumarum are arranged in serial dots on the sheath, while those 
of Puccinia triticina are irregularly scattered ; and also the teleutospores of 
Puccinia triticma are generally not so long and unsymmetrical as those of 
Puccinia glumarum. 
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 glumarum 
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 Er. 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, (7 12) ; Sacc., Syll., 17, 1905, (382) ; McAlpine, 
Rusts of Australia, 1906, (116). 
Hab. On Bromus pauciflorus Hack. 
Honshü . — Prov. Rikuchü : Morioka (II. & HI. Oct. 20, 1907. K. Okumura). 
Distrib. Europe, Asia minor, Japan and Australia. 
Remarks. At first Eriksson ( i ) considered this species as a specialized 
form of Puccinia dispersa Eriks, et Henn. Later he regarded it as a distinct 
species and named it Puccinia bromina Eriks. (4). In 1901, Fr. MÜLLER (1) 
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 ol 
its characteristics to the present species. 
The aecidial stage of this fungus is not yet found in our country. 
