OX THE UREDINEAE PARASITIC ON THE JAPANESE GRAMINEAE. 227 
cinia on Phragmites communis, I was able to find the following differences. 
By its longer pedicel and larger spores, our species is distinguished from 
Pnc cinia Magnusiana and P. simillima. And from other species, our plant 
is easily distinguished by its narrower and cinnamon-colored spores. The 
basidiospores of this species have no power to infect Rume x domcsticus. 
43. Puccinia aestivalis Diet., in Engl., Bot. Jahrb., 34, 1905, (585) ; 
37, 1906, (101). — (PI. XII. Fig. 3). 
Hab. On Pollinia nuda Trin. 
Honshu.. — Prov. Musnshi : Tokyo (II. July 1901. G. Yamada ; III. Sept. 22, 1905. N. Nambu). 
— Prov. Uzen : Omagari (II. & III. July 31, 1908. M. Miura). 
Distrib. Japan. 
Remarks. Dietel (8) writes that the teleutospores germinate at once 
when ripe. I also recognized the same fact in our specimens. According to 
him its teleutospores are somewhat like those of Puccinia Pollinia: Barcl., of 
Himalaya in general characters. 
According to DlETEL (9), this fungus has two kinds of uredospores ; one 
is globose or oval in shape, echinulate, with a light brownish-colored thin 
epispore, while the other is piriform or oval in shape, nearly smooth, and 
deep brown in color. 
From the statement of DlETEL it seems that these two kinds of uredo- 
spores occur in separate sori ; but during the course of my study, I found that 
both of them are formed in the same sorus. 
44. Puccinia microspora Diet., in Engl., Bot. Jahrb., 37, 1906, (iorj. — 
(PI. XII. Fig. 4). 
Hab. On Rottboellia compressa L. var .japonica Hack. 
Honshü.— Prov. Musashi : Tokyo (II. & III. Oct. 12, 1904. N. Nambu). 
Distrib. Japan. 
Remarks. I was able to examine the type specimen of this species by 
the kindness of Mr. N. Nambu. The present species differs entirely, as 
Dietel (9) remarked, from Uredo Rottbcellice and Puccinia Rottbcellice. 
Compared with Uredo Rottbcellice, the uredosori of our species are smaller 
in size, and are generally loosely covered by the epidermis, and also 
its urdospores are smaller with capitate paraphyses intermixed with them. 
