ON THE UKEDINEAE PARASITIC ON TIIE JAPANESE GRAMINEAE. 209 
seed from Dublany. The species of Puccinia known to infect Air a 
( Deschampsia ) are Puccinia graminis, P. coronata , P. borealis and P. Baryi. 
All these species, however, do not agree with our fungus which on the con- 
trary resembles very closely Puccinia Poarutn and is here provisionally 
placed in the species under consideration. 
21 . Puccinia ishikariensis S. Ito. n. sp. — (PI. XI. Fig. 6.) 
Uredosori, epiphyllous ; oblong or linear, minute, on the brownish 
discolored spots, gregarious, often confluent, immersed between the veins, 
naked, pulverulent, brown-colored. Uredospores, globose, sublobose or 
piriform, echinulate (distance between spines about 3 //), yellow or brownish 
yellow in color, 20 — 36 x 14—28 ft ; epispore 2 — 3 p thick ; germ-pores 6 — 8,- 
scattered ; paraphyses numerous, clavate or capitate, apex not thickened, 
yellowish, 50 — 80 x 17—18 p. 
Teleutosori, amphigenous ; small, oblong or linear, densely scattered 
over the surface, arranged in lines, rarely confluent, long covered by the 
epidermis, at length naked, with the torn remains, compact, somewhat 
pulvinate, grey or black; surrounded by the thick bed of brown paraphyses. 
Uredospores are frequently mixed in the sori. Teleutospores, cylindrical, 
cuneate or oblong-clavate, unsymmetrical, apex thickened (4— 6 «), truncate, 
rounded or shortly apiculate, base attenuated or cuneate, not or slightly con- 
stricted at the septum, smooth, brownish-orange, lighter colored at the 
lower cell,, 36 — 60x14 — 24 p\ epispore thin; pedicels short, brown, sub- 
deciduous. 
Hab. On Molinia japonica Hack. 
Hokkaido. — Prov. Ishikari : Tsuishikari (II. Sept. 29, 1937. S. Pro ; IT. & III. Oct. 6, 1907. 
-J. Kasai). 
Distrib. Japan. 
REMARKS. The species of Puccinia hitherto know to grow on Molinia 
are Puccinia graminis , P. coronata, P. Moliniac, P. Diplachnis and P. 
australis. 
Except the one last mentioned all other species occur in Japan, and 
they differ entirely from the present species. Our plant differs also from 
Puccinia australis. It is distinguished from Puccinia coronata by the 
