n INTEODUOTION. 



In the course of my studies since last year, I have found 

 many new species to be added to the flora of Formosa. Among 

 them, the following genera* are new to our flora. 



Captis, represented by G. Morii Hayata -vvhicli is related to a Japanese 

 species, C. quetiqu^olia Miq. 



Macleya, represented by M. cordata K. Bb. which is widely distributed 

 tlirough China and Japan, but is rather rare in this island. 



Eutrema, represented by E. Ivedercefdia F. et S. which is peculiar to 

 Japan and Formosa. 



Gasearia, represented by G. MerriUi Hayata, which is related to some 

 Philippine species. The genus is mentioned under the Samydacese in 

 Bentham and Hooker's fundamental work.** In my opinion, however, it 

 should be referred to the Bixinese, so far as the present plant is concerned, 

 after the limitation of the two families (Samydacese and Bixinese) 

 mentioned in the same work. The genus is referred to the Flacourtiacese 

 § OaseariesB*** in Englee's system. 



Salomonia, represented by S. stricta S. et Z. which exists only in 

 Japan and Formosa. 



3Ielandnum, represented by M. morrisonmontanum Hayata and two 

 other species, all endemic to the island. 



Arenaria, represented by A. petidlata Hayata which closely resembles 

 A. serpyllifdia Linn. 



Myssopteris, represented by a Philippine species, E. Gumingiana A Juss. 



Ghisocheton, represented by Gh. kusuJeusense Hayata which is closely 

 related to Gh. hongJcongetise Tutchek. 



Gassine, represented by G. iUicii/dia Hayata and two other species, all 

 endemic to Formosa. 



Pygeum, represented by a Philippine species, P. Preslii Mere. 



Sanguisorha, represented by 8. formosana Hayata, which is very 

 near to 8. officinale LiNN. 



Osteomdes, represented by 0. antliyllidifdia Lindl. The species is 

 distributed in Japan, the Boniu, Sandwich, Maingaia, and Pitcairn Islands. 



* It should be tmderstood that I ha^e not counted in these genera any genus outside o£ 

 Formosa, though they are mentioned in this work. 



** Bentham et Hookeb, Genera Plantarum I. p. 791. 



*** Ekgleb, a u. GhiG. E., Syllabus der Pflanzenfamilien (1912) p. 268. 



