On the Plants of Sulphur Island 



By 

 Samurö Ökubo 



Assistant Professor of Botany, Tniporial University. 



The plants of Sulphur Island in the following list were chiefly 

 collected l)y Mr. Shinnosuke Matsuhara, who lately sul^mitted them 

 to me for determination. My friends Messrs Yasushi Kikuclii, 

 Nobutoshi Okada, and Ichiro Shishido, also made some collections of 

 plants in the island, which they kindly showed me. 



Of the flora of Sulphur Island, as far as I know, nothin^^; has yet 

 been published ; nor have any of us ever before made an examination 

 of the flora. It may not be without interest, then, to publish this list 

 of plants. 



The gentlemen, named above, visited Sulphur Island on Novem- 

 ber 10th, 1887. They remained on it only six hours ; and, as each 

 had other special work to do, a very short time only could be spared 

 for collecting plants. Consequently it is very probable that further 

 search would add many more plants to the list here given. 



Sulphur Island lies between latitudes 24° 44' 29" N. and 24° 47' 

 46" N. and between longitudes 141° 16' 29" E. and 141° 21' 10" E. 

 Its greatest length is about 5J miles, stretching from south-west to 

 north-east, and its greatest width not more than tw(^. According to 

 j\Ir. Y. Kikuchi, it is an active volcanic island, consisting chiefly of tufa 

 and basaltic rock. The present volcano is at the south-eastern end of 

 the island, and is almost destitute of anv veo-etation. On the north- 



