4 INTRODUCTION 



making sketches, ou tracing paper, of the specimens preserved only in 

 Dahlem and nowhere else, so that I could make a close comparison with 

 these sketches on my return to Tokyo. After finishing my work, I went 

 with the same purpose to the Herbarium at St. Petersburg, in order to see 

 the type specimens of MAXIMOWICZ. During my work on the continent, I was 

 successful in placing some species which I had not been able to determine 

 at Kew. Still, many of the plants in my collections, which remained 

 undetermined, are not represented in any of the herbaria ou the continent. 

 It is, therefore, higlily probable that they are species not yet described. 

 Shortly after my return to Tokyo, I finished preparing my " Materials for a 

 Flora of Formosa ", which had been undertaken during my stay at Kew. 

 The paper 15 is now in press in Tokyo. 



To mention the number of species in the flora 2) of the island, known to 

 us up to the present time, there are in the Enumeratio^ 1999 species belong- 

 ing to 701 genera and 153 families. In my Flora Montana 4) 392 species are 

 mentioned, belonging to 266 genera and 70 families. In my " Materials for 

 a Flora of Formosa ", I have mentioned 735 species, belonging to 343 genera 

 and 109 families, thus adding to our present knowledge of Formosan flora 

 567 species, 72 genera and 2 families. Excluding all those species Avhich 

 appear for a second or third time in the above three paper, the total 

 number of the plants of the island is 2660 species, belonging to 836 genera 

 and 156 families, thus adding 292 species to the number given in " List of 

 Plants in Formosa," quite recently published by Mr. T. KAWAKAMI.^ At 

 present, the number of species lias nearly doubled since the publication of 

 Dr. A. HENKY'S preliminary work. G) Thanks to the encouragement and 



1 ) HAYATA, B. Materials for a Flora of Formosa. Journ. Coll. Sci. Imper. Uiiiv. Tokyo, 

 XXX. Art-I. 471 pages. June, 1911. 



2 ) The term flora used in this work includes flowering plants, ferns and their allies. 



3) MATSUMUBA, J. et HAYATA, B. Enumeratio Plantarum Formosaiiarum. Journ. Coll. Sci. 

 Imp. Univ. Tokyo XXII. 702 pages, with 18 plates, 1906. 



4 > HAYATA, B. Flora Montana Formosa. Journ. Coll. Sci. Imper. Univ. Tokyo, XXV. Art. 

 19, 260 pages, with 41 plates, 1908. 



5 ) KAWAKAMI, T. A List of Plants of Formosa, 119 pages, Taihoku, 1910. 



6 > HENRY, A. A List of Plants from Formosa, in Transactions of the Asiatic Society of 

 Japan, XXIV. Suppl. 1896. 



