﻿ON THE BOTANY OF JAPAN. 



4^9 



Fagus sylvatica, 

 Streptopus amplexifolius, 



Blechnum Spicant, 

 Athyrium fontanum. 



The names enclosed in parentheses are of species which I have not seen from Japan ; 

 some of them inhabit the adjacent mainland ; some are imperfectly identified. Those 

 marked * are high northern species in America. 



Of these 56 extra-European species, Si inhabit Western, and 41 Eastern North 

 America. And 15 are Western, and not Eastern ; 22 Eastern, and not Western ; and 

 19 common to both sides of the continent. About eight or nine of these 56 species 

 extend eastward into the interior of Asia. 



On the other hand, the only species which I can mention as truly indigenous both 

 to Japan and to Europe, but not recorded as ranging through Asia, are 



Euonymus latifolius, 

 Valeriana dioica, 

 Pyrola media, 



Two of these species extend across the northern part of the American continent, and 

 on to the Asiatic ; another occurs on the northwest coast of America ; and another, the 

 Fagus, is represented, in Eastern America, by a too closely related species. It is note- 

 worthy, that not one of these seven plants is of a peculiarly European genus, or even a 

 Europajo-Siberian genus ; — while of the fifty-six species of the Americo-Japanese region 

 wanting in Europe, twenty are of extra-European genera ; seventeen are of genera re- 

 stricted to the North American, East Asian, and Himalayan regions (except that 

 Brasenia has wandered to Australia) ; fourteen of the genera (most of them mono- 

 typic) are peculiar to America and Japan or the districts immediately adjacent ; one is 

 peculiar to our northwest coast and Japan ; and eight are monotypic genera wholly 



