﻿ON THE BOTANY OF JAPAN. 423 



sentative species. This column may hereafter be much better filled ; and in a more 

 particular view the Himalayan species should be distinguished from the Siberian by 

 some mark. The comparisons made in the European, and especially in the two Ameri- 

 can columns, are naturally more complete, and of higher critical value. 



To a certain extent I have attempted to express degrees of relationship, by printing 

 identical and closely related species in italic type. The identical species in any or all 

 of the regions are made evident by the repetition of the specific name. The other 

 italicized names indicate species so like the Japanese one, that either they may prove to 

 be couspecific, or might be so regarded by a botanist who took wider views of the pos- 

 sible variation of species than now prevail ; or else they indicate species which, however 

 distinct in their special character, are manifestly counterpart or strictly representative 

 species, the one of the other ; as, for instance, our Texan Sophora affinis of S. Japonica, 

 our Wistaria of the Japanese species, and Arethusa Japonica of our A. hulbosa. In a 

 few cases plants of different genera are italicized, to note a case of remarkable represen- 

 tation ; as our Sckizanclra in the Atlantic United States, representing both Kadsura and 

 an oligandrous SpJucrostcma in Japan; or Aplectrum, here the evident analogue of 

 Oreorchis on the other side of the hemisphere. The names in ordinary type indicate 

 species of less intimate, but still of near relationship, — how near, it is difficult to ex- 

 press in words ; but general botanists will readily perceive what is intended, upon look- 

 ing over the table. 



Authorities for the species are wholly omitted, to save room upon the page. 



*^* Under the Nymphaacece, on p. 381, the well-known case was inadvertently 

 omitted of our Brasenia peltata, inhabiting the Atlantic side of North America, from 

 Canada to Texas ; also occurring in Japan (Planchon has identified it as Thunberg's 

 Menyanthes nymphoides), in the Eastern Himalayas, and in Eastern Australia. 



