CONTRIBUTIONS TO THE MYCOLOGICAL FLORA 
OF JAPAN. II. 
On the Uredineae Parasitic on the Japanese Gramineae. 
By 
Seiya I to, Nogakuski. 
(With Plates X— XII) 
INTRODUCTION. 
The annual loss owing to the rust of cereals is often quite enormous. In 
Europe and America, the disease has consequently attracted a good deal of 
attention from old times. 
In i864-’65 de Bary (i) proved scientifically for the first time the 
genetic relation between Puccinia graminis Pers., and /Ecidium Berberidis 
Gmel. The discovery of the heteroecism in the cereal rusts may be regarded 
as the starting point in the history of the scientific investigations of the rust- 
fungi. In 1896, J. Eriksson with his assistant E. Henning published “ Die 
Getreideroste,” which is regarded as a classical work on the subject in 
question. The appearance of this great work has stimulated the investigation 
on the same subject by botanists in many countries. Their attention has 
especially been turned to biological questions. Among the investigators on 
the subject, the name of P. Dietel, E. Fischer, Fr. Bubäk, T. Soppitt, P. 
Sydow, W. Tranzchel, Marshall Ward, H. Klebahn and A. Carle- 
ton are never to be forgotten by the students of Phytopathology. Recently, 
Pole Evans (i) has contributed the idea, that many biological species can 
also be recognized by their cytological characters. On the other hand, the 
study of the sexual processes in the Uredineae has made a remarkable 
progress for the last four or five years. And the relation of the cereal rust to 
(1) Prepared under the direction of Prof. Dr. K. Miyabe. 
Contributions. I. — T. Miyake, On Puccinia Parasitic on the Umbelliferae of Japan. Journ. 
of the Sapporo Agric. Coll. Vol. II. Pt. 3. 1906. 
