ox THE UREDINEAE PARASITIC ON THE JAPANESE GRAMINEAE. 197 



7. /'. Triscti Eriks. 



On Trisctum flavcscens (/Ecidium unknown). 



8. /'. simplex (Kcke) Eriks, et Henn. 



The dwarf rust of barley (^Ecidium unknown). 

 No. I, 2, 3, 4 and S are found in our country. 



Further, El-IKSSOX subdivided Pucciiiia gliimai iim into the five following 

 specialized forms : — 



1. f. sp. Tritici. 



2. f. sp. HordL-i. 



3. f. sp. Sc calls. 



4. /. sp. I'Jyvii. 



5. /. sp. Agropyri. 



In Japan, the first two forms only have been found so far. 



11. Puccinia dispersa Eriks, in Ann. d. Sc. nat. 8 s, 9, 1899, (241); 

 Fischer, Urcd, Schw., 1904, (357) ; Takahashi, in Trans. Sap. Nat. Hist. Soc, 

 1, 1906, (44). 



Hab. On Sccale cercalc L. 



Hokkaido.— Prov. Isbikari: Sapporo (II. June 2S, 1S95. Y. ToKUBUCHi ; IT. Aug. i, 1S95. K. 

 JIlYABE ; II. Sept, 16, 1897. T. NISHIDA ; II. July 24, 1900. G. Yamada ; II. & III. Aug. 24, 1904. Y. 

 Täf\hashi : ]I. July 12, 1907. S. Itö). 



Honshu. — Prov. Rikuchü : Morioka (II. May 1906. L!. Fukuta) ; Osawa (II. July 12, 1907. 

 G. Yamada.) 



Distrib. Eui'ope, Asia minor, Siberia, Japan and Xortli America. 



Rem.-VRKS. As was remarked in the case of Puccinia ghnnarinn, this 

 species was formerly included in Puccinia rublgo-vera, from which ERIKS- 

 SON (i) had separated it as a distinct species. By infection experiments, he 

 has divided it into the four following specialized forms : — 



1. f. sp. Sccalls. 



2. f. sp. Tri tic I. 



3. f. sp. Bromi. 



4. f. sp. Agropyri. 



Five years late.', Eriksson (4) elevated the_/. sp. Sccalls into a specific 

 rank and gave to it the name Puccinia dispersa Eriks, (not Eriks, et 



