ox TFTE UREDIXEAK PARASITIC ON THE JAPANESE GRAMINEAE. 20I 



Urcdosori, amphigenous, mostly epiphyllous ; minute, oblong or roundish, 

 on the yellowish discolored portions, gregarious or scattered, sometimes 

 confluent, loosely covered by cpidcmiis, soon after ruptured, pulverulent, 

 orange-colored. Uredospores globose, subglobose or broadly ellipsoidal, . 

 echinulate, light yellowish colored orhj^aline, 20—28 X iS — 24// ; paraphyses 

 absent. 



Ttlcutosori, hypophyllous ; minute or medium sized, oblong or linear, 

 gregarious, somewhat arranged in lines, sometimes confluent (rarely i cm. in 

 length), almost always covered by the epidermis, pulvinate, compact, black- 

 or grey-colored. Teleutospores subcj'lindrical or cylindrical, apex truncate 

 or wav}', thickened (5—6«, rarely 8//.), base tapering toward the pedicel, or 

 angular, not or slightly constricted at the septum, smooth, yellowish brown- 

 colored, 43 — 62x12 — 20/-'.; epispore thin; pedicels short, brown or sub- 

 h}-aline, subdeciduous. 



Hab. On Glyccria aquatica Sm. 



Hokkaido.— Prov. Isliikari : Jüzankei (II. i; III. Aug. ig, 1S9S. K. Miyaue ; II. & III. Aug. 

 24, 1S9S. T. NisHiDA) ; Shiroishi (11. \: III. Ücl. 6. 1907. S. iTÖ) ; Tcinc (II. & III. Oct. 25, 1907. S. 

 ITÜ). 



On Glyccria toiiglcnsis Clk. 



Shikoku.— Prov. To;a: Köchi (III. J.iii. 2, 1907. S. KusAXO) ; Kamoda-mura (II. iv III. Oct. 

 1907. T. YOSHINAGA). 



Kiusliü.— Prov. Iligo: Kurokawa-mura (II. & III. Aug. 13, 1906. K. Yoshi.no). 



Distrib. Japan. 



Remarks. This species resembles closely Pucciiiia Panicnl xricc 

 Arth(i). which is parasitic on Panicitlaria amcricana {^Glyccria gj-andis) in 

 North America. Glyccria aquatica and G. toiiglcnsis ( = (7. caspia Trin.) are 

 not recorded as the host-plants to the American species. In 190S, 

 Dietel(i2), examining the specimen on Glyccria toiiglcnsis sent by Mr. 

 YOSIIINAGA, recorded it as the same as the American species. By com- 

 paring the type specimen which Mr. Y0SHINAG.\ had kindly sent me and 

 many others with the description of Pucciiiia PaniculariLC I came to con- 

 clusion, that the Japanese and American plants are of two distinct species. 

 The points of difference are as follows : — 



I. No record of the uredosori in the American species, the uredospores 

 being found mixed within the teleutosori, but in our species the independent 



