OX THE UREDINEAE PARASITIC ON THE JAPANESE GRAMINEAE. 245 
Moreover, they observed that the fungus also attacks the wild sugar cane 
( Saccharum spontaneuni) in Java as well as in Australia. 
In 1906, SvDOW and BUTLER (1) identified the Indian fungus on Saccha- 
rum arundinacea, S.fusca and .S'. spontaneuni with the present species, and 
remarked that the uredospore on the last named host-plant differs from the 
rest by having a thickened apex. 
Our specimens on Saccharum officinarum from Formosa, as Wakker 
and WENT remarked, have the sori mostly on the leaf-blade. Macroscopi- 
cal appearance also agrees with the description of these authors. They 
recorded the sori, liow'ever, as amphigenous, saying that those on the under 
surface of the leaves are more than those on the upper surface. But I have 
not been able to find in the Formosan specimens even a sorus on the upper 
surface. 
I found two kinds of spores in the same uredosori. The one kind is 
the uredospores with equally thickened hyaline wall, and the another is 
those with a wall thickened especially at the apex and with brownish-yellow 
epispore. It is very probable that the latter sort of the spores might proba- 
bly have led KrÜGER to consider this fungus to be a species of Uromyces. 
3. Uredo Yoshinagai Diet., in Engl., Bot. Jahrb., 37, 1906, (109). 
Hab. On Arundinclla anomara Steud. 
Distrib. Japan. 
Remarks. Dietel (9) has suggested the affinity of the present 
species to the uredospore of Puccinia peridermiospora (Ell. et Tracy) Arth. 
on Spartina cynosuroides of North America. 
B. Parapliyses present in the sori. 
4 . Uredo jozankensis S. Ito. n. sp. — (PI. XII. Fig. 10). 
Uredosori , hypophyllous ; very minute, oblong or ellipsoidal, on the 
dark brownish spots, scattered, not confluent, rarely arranged in lines, long 
covered by epidermis, when ruptured pulverulent, orange-colored. Uredo- 
spores globose, subglobose or piriform, echinulate, 15-20x14-17//; germ- 
pores inconspicuous ; epispore yellow ; paraphyses clavate, apex slightly 
thickened (2-3//), yellow-ochre colored, 28-40x9-14//. 
