JOURNAL OF THE COLLEGE OF SCIENCE, IMPERIAL UNIVERSITY, 

 TOKYO, JAPAN. 



VOL. XXVII., ARTICLE 13. 



Plantae Sachalinenses Nakaharanae. 



By 

 G. Koidzumi, 



Botanical Institute, Sei. Coll., Tokyo Imp. Univ. 



With 3 plates. 



INTRODUCTION. 



Since the publication of Fr. Schmidt's ''Bei sen im Amiir- 

 lande und auf der Insel Sachalin " in 1868, the investigation 

 of the flora of Saghalin has not made much progress, notwith- 

 standing the length of the interval. In 1906, Mr. G. Naka- 

 HAEA was sent by the university of Tokyo, in association with 

 Professor Ijima's collecting party, to investigate the flora of the 

 Japanese part of the island. His trip lasted only three months, 

 from June to August, collecting mainly at the localities shown 

 in the accompanying woodcut. Though the collection is by no 

 means an exhaustive one, it extends over sixty-seven families, 

 comprising two hundred and seven genera and three hundred 

 species, as follows : 



67 „ 207 „ 301 



