INTRODUCTION. 



The present volume coutaiDS studies on species and varieties ranging 

 from the Kanunculaceae dowu to the Aroideoe. All the species of Phanero- 

 ^amous plants are here airanged, as in the precediug vohimes, after the 

 system of Bentham aud Hooker. Of the species and varieties mentioned in 

 tliis work, 139 are proposed as new species and 4 are regarded as new 

 varieties of known species. Two new genera DoUchovigna and PseudosmUax 

 are proposed as new, while niue geuera are mentioned as new to the flora 

 of the island. The latter genera are as follows : — 



TJnis, up to the present date, the total number of species of the flora, so 

 far as is kuown, is 3,608 and 78 varieties belonging to 1,185 geuera and 

 169 famihes. 



Finally, I avail myself of t]iis oppoi-timity to teuder my hearty thanks 

 to the oflicials of the GoveiTiment of Formosa, to whom I am much indebted 

 for help in the coUection of material aud in the pubhcation of tliis work. 



BuNZo Hayata. 

 October 1919, Taihoku and Tokyo. 



