ON THE UEEDINEAE PARASITIC ON THE JAPANESE GRAMINEAE. 243 
is commonly found on the leaves of Elyinus arenarius, but is also rarely 
found on Elymus Sibiriens in Hokkaido. 
2. Rostrupia Miyabeana S. Itö. n. sp.— (PI. XII. Fig. 8). 
Uredosori, amphigenous, mostly epiphyllous ; small, oblong or elliptical, 
scattered or gregarious, on the brownish discolored spots, naked, with torn 
epidermis, pulverulent, orange-colored. Uredospores globose, subglobose 
or broadly ellipsoidal, echinulate, 18-28 x 14-16//; epispore 1-2// or 3// thick, 
hyaline or subhyaline ; paraphyses absent. 
Teleutosori , hypophyllous or on the sheath ; small, oblong or sublinear, 
scattered or subgregarious, long covered by the epidermis, sometimes con- 
fluent, somewhat pulvinate, black ; separated into small compartments by 
the thick bed of brown paraphyses. Teleutospores cylindrical or oblong- 
clavate, apex slightly thickened (3-5//), truncate or obliquely pointed, rarely 
rounded, base attenuated or rounded, not or very slightly constricted at the 
septum, 2-4 septated, smooth, blackish ferruginous, darker colored at apex, 
32-52 x 15-24//; pedicels short, brown, subdeciduous. 
Hab. On Brachypodium japonicum Miq. 
Hokkaido.— Prov. Oshima: Hakodate (II. & III. July 1897. T. Kawakami). 
Kiushü. — Prov. Higo: Imizu-mura (III. June 9, 1904; II. Feb. 12, 1905. K. Yoshino). 
On Brachypodium pimiaturn Beauv. 
Hokkaido. — Prov. Ishikari : Union (III. Aug. n, 1891. K. Miyake). 
Distrib. Japan. 
REMARKS. The case of Rostrupia parasitic on the leaves of Br achy- 
podium has hitherto not been recorded. In our specimen, it is true that the 
two-celled teleutospores are often found mixed, but the three-celled ones 
are far more common. The four-celled ones are comparatively few in 
number. 
The length of the teleutospore of this fungus is shorter than that of 
Rostrupia Ely ini, but its breadth is generally wider. Its color differs from 
that of the latter species being darker and the lowest septum is sometimes 
longitudinal or oblique. 
