28 



AET. 19. — B. HAYATA: 



Ceraslium pilosum Ledeb. 



Rhamnvs argiita Maxim, (represented by a variety.) 



Hci'e we see tliat the relation is far less close. 



k) Endemic Elements {excepting varieties.) 



Endemic plants are comparatively numerous as is to be 

 expected in an island. There are as many as 99 species, or 

 25^0 of the total number of the plants found in the high 

 elevations. This richness in endemic plants seems to indicate 

 that the island has been entirely separate from neighbouring 

 countries since geological epochs. 



However opulent Formosa is in peculiar plants, the figure 

 representing the number of the endemic species is not so large 

 in the case of tliis island as it is in that of the Philippines.^^ 

 This fact shows that the flora of Formosa is of continental 

 character, while that of tlie archipelago is insular. 



The numbers of the plants of endemic character under each 

 genera are shown in the following list. 



1) Mr. E. D. Merrill states that 4:1% of the total number of the plants found in the Lamao 

 Forest Reserve is endemic to the Pliilippines (see Philipp. J(5urn. Si-i. Vol. I. Suppl. p. 9.) 



