On the Distribution of the Formosan Conifers. 



B. Hayata, Rigakushi. 



Assistant in the Botanical Institute, Science College, 

 Imperial University of Tokyo. 



[Read before the Tokyo Botanical Socitly, 22, April, 1905) 



CONTENTS. 

 Introduction. 



I Formosan Conifers, and their Relation to the Neighbouring Floras. 

 II On Dividing the Chino-Japanese Flora into two Florules : 1) Border Florule> 

 2) Central Florule. 



III On the Existence of a Land-mass between Japan and Formosa with reference 

 to the Floral Formation. 



IV Summary. 



INTRODUCTION. 



I have been studying the Formosan flora for the last three years basing 

 upon the materials, preserved in the Herbarium of the Science College of 

 the Imperial University, which were collected by Messrs. T. Makino, C. 

 Owatari, K. Miyake, and many others. In the course of my study, I was 

 struck with the singularity of the fact that the two floras of Japan and 

 Formosa have a close relation between them notwithstanding the great 

 difference of the physical conditions. 



Dr. A. Henry states 1)::: ' that the Formosan flora has the Chinese as its 

 essential element which is accounted for by the presumption that Formosa is 

 a continental island and doubtless was connected with the Chinese mainland 

 in recent geological ages. As far as my knowledge extends, the Formosan 

 flora is equally or more similar to the Japanese flora, and what is stated 

 about the geographical relation of the island and China will hold good about 

 that of the island and Japan. I will give my opinion about this, more fully 

 in another paper, after I have completed the work of the Formosan flora. 



1)* Dr. A. Henry : — A List of Plants from Formosa, p. 2. (Transaction of the Asiatic 

 Society of Jnpan Vol. XXIV: Suppl.) 



