12 



M. YOKOYAMA. 



The next table shows the number of species which each locality 

 has in common with others. 



Shimamura has given the greatest number of species, of which 

 45 °/ are identical with those of other localities. Yanagidani with 3 

 and Tanimura with 6 species are only parts of the Shimamura 

 flora, as all their species are included in those of the latter. 

 Ozö, with 14 species and 9 in common with others, and Hakogase, 

 with 9 species and 4 in common with others, may safely be considered 

 as contemporaneous with Shimamura. The same is the case with 

 Okamigo, whose species number a little less than one half those of 



