﻿ON THE BOTANY OF JAPAN. 



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America, but both absent from the rest of our continent. Excepting Poedcrota and 

 Buxus (the latter a rather doubtful native of Eastern Asia), none of these genera are 

 peculiar to Europe, but all extend throughout Asia and elsewhere over large parts of 

 the world. 



The following incomplete list of North American genera or peculiar subgeneric 

 types represented in Japan and its vicinity, but unknown in Europe, presents a very 

 different appearance. Those which are absent from the flora of Western North America 

 are italicized. 



Here are about 90 extra-European genera or forms, 65 of which are absent from 

 Western North America out of the tropics (the latter comprising a very large part of 



