n INTRODUCTION. 



As to the total number of species recorded from the island, I 

 may add that in the preceding fascicle it was stated to be 2660 

 species, belonging to 836 genera and 156 families. Since then just 

 one year has elapsed. During that time I have secured many 

 collections and a number of genera and new species have to be 

 added to our Formosan flora. The genera to be added at this 

 time together with a few that appeared in the Tokyo Botanical 

 Magazine a few months ago, are given in the following table. 

 Gonocaryum Cissus Semccarpus 



Pacliysentria Medinilla Gilibertia 



Litosanthes Chimaphila Erycibe 



Blachia Pachysandra Sarcococca 



Mitrastemon Cremastra Cypripedium 



lone Listera Oreorchis 



Tteniophijllum Drymotcvnium Perancma 



Lecanopteris. 



The species newly added or now to be added number as 

 many as 47. Among these stands Rafflesiaceae or Mitra- 

 stemonacece, a new family proposed by Mr. T. MAKING, and 

 represented in Formosa by Mitrastemon Kaica-Sasakii HAYATA* 

 Thus up to the present date, the total number of the flora, so far 

 as is' known, is 2707 species, belonging to 858 genera and 157 

 families. 



In conclusion, I avail myself of this opportunity to express 

 my obligations to the officials of the Government of Formosa who 

 have helped me in the collection of materials and in the publica- 

 tion of my work. 



B. HAYATA. 



Taihoku and Tokyo, September 10th, 1912. 



