JAPANESE BOTANICAL LITERATURE. 



Takahashi, Y., Notes on cereal rusts in Japan. (Tran- 

 sactions of Sapporo Natural History Society, Vol. I. Part. 1, 

 1905-6, p. 39-50). (Japanese with English resume). 

 All the species of the cereal rusts reported from Europe namely, 

 Puccinia graminis Pers., P. glumarum (Schm.) Eriks. et Henn., 

 P. triticina Eriks., P. dhpersa, Eriks , P. simplex (Korn.) Eriks. 

 et Hexx. and P. coronifera Kleb. are found to occur on Japan- 

 ese grain crops. 



Generally speaking, of these six species, P. glumarum is most 

 common, attacking wheat and barley to a large extent. P. tri- 

 ticina and P. simplex are of common occurrence in Hokkaido, 

 seriously attacking their respective host. These two species are 

 found also in Honshu. P. graminis appears on wheat much later 

 than either P. gluminarum or P. triticina, and causes a very 

 little or almost no damage to the crop. P. coronifera causes 

 also practically no damage. So far P. dispersa is known only 

 from Hokkaido, where rye is cultivated for experimental purposes. 

 Its aecidium stage is not yet found there, and the teleutospores 

 are ver}- rarely formed. The fungus probably passes the winter 

 in its uredo stage. K. Miyake. 



Manabe, A., On the cereal rusts in the vicinity of Kotna- 

 ba, Tokyo. (Bot. Mag. Tokyo, Vol. XX. Oct, and Nov. 

 1906, p. (238)-(244), (273)-(298) (Japanese). 



The author made careful investigations on the cereal rusts 

 in the vicinity of Komaba, the site of the Agricultural College 

 of the Imperial University, from March to June, 1906. The 

 following three species of rust fungi were found : 



Puccinia glumarum Eriks. et Henn. on wheat. 



Puccinia simplex Eriks. et Henn. on barley. 



Puccinia triticina Eriks. on wheat. 



Rye and Oats were found to be free from infection. The 

 author has also studied many specimens of cereal rusts from 

 various parts of Japan, and found, besides the above mentioned 

 three, the following two species : 



Puccinia graminis Pers. on barley and wheat. 



Puccinia coronifera Kleb. on Oats. K. Miyake. 



