ON THE UREDIXEAE PARASITIC ON THE JAPANESE GRAMINEAE. 203 
REMARKS. There are five species already recorded as parasitic on 
Elyimis ; namely, Puccinia graminis , P. glumarum , P. montanensis, P. 
procrea and P. impatientis. We need not discuss here differences of the 
present species and P. graminis and P. montanensis , because they differ from 
one another in many prominent points. Puccinia glumarum, P. procrea and 
P. impatientis are rather related to our species in the general shape of teleuto- 
spores. From Puccinia glumarum, it differs by having the uredospore, whose 
wall is brownish yellow in color, while it is hyaline or light yellow in Puccinia 
glumarum. From P. procrea, it differs in smaller uredospores, and 
teleutosori. In the former species, the uredospore is very large, and the 
teleutosorus is more remarkably so, measuring often 1 cm. in length, while in 
our species, the sorus is only 1.5—3 mm - length. Moreover, the teleutospore 
of the former is larger than that of ours. From P. impatientis it differs in a 
fewer number of the germ-pores of uredospores and the teleutospore of this 
species is longer than that of others. As there are no species already 
described which correspond exactly with our species I may be justified in 
considering it as a new species. 
17. Puccinia sessilis Schneid., in Schroeter, Brand und Rostpilze 
Schles. in Abhandl. d. Schles. Ges. naturw. Abt. 1869, (19); Winter, Pilze, 
1884, (222) : Schroeter, Pilz Schles., 1889, (324) ; Dietel, in Engl., Bot. Jahrb., 
27. 1900, (569); 32, 1903, (48); 32, 1903. (626); Henn., in Engl., Bot. 
Jahrb., 31, 1902, (732) ; Sydow, Monogr. Ured., 1, 1904, (781). 
Hab. On Phalaris arundinacea L. 
Saghalien. — Wendgishi (III. Aug. 18, 1906. K. Miyaise & T. Miyagi) ; Makunkotan (III. 
Sept. 15, 1906. T. Miyake) 
Hokkaido.— Prov. Ishikari: Ebetsu (III. Sept. 29, 1907. S. Pro). 
Honshu.— Prov. Tokyo (II. & III. Oct. 26, 1899 ; III. Sept. 2, 1900. S. Ktjsano). 
Kiushü. — Prov. Higo: Imizu-mura (II. May 15, 1904. S. Yoshino). 
Distrib. Europe, North America and Japan. 
Remarks. The present species was named by Schneider in 1891 but 
described by Schroeter (1) in 1869. PLOWRIGHT, DlETEL and Klebahn 
have found in Puccinia sessilis many biological species by infection experi- 
ments ; they are as follows : — 
1. Puccinia Ari-Phalaridis (Plowr.) Kleb. 
2. P. A llii-Ph a laridis Kleb. 
