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MASSACHUSETTS HORTICULTURAL SOCIETY. 



states of America has long been recognized and the more we learn 

 of the Chinese flora the stronger is this affinity emphasized. On 

 my last journey in China I discovered, for the first time in history, 

 a species of Symphoriearpos. Heretofore this genus was unknown 

 outside of the American continent. Indeed the most interesting 

 result of our extended knowledge of the Chinese flora is the dis- 

 covery, in the heart of China, of representatives of genera originally 

 known only from the Atlantic side of the United States of America. 

 In fact, the headquarters of certain genera originally known only 

 from the southern states of the United States of America is now 

 proven to be the Chinese continent. 



Magnolias afford a good illustration of this remarkable affinity. 

 This genus, absent from Europe and western North America, is 

 represented by 7 species in the Atlantic side of this continent and 

 by 12 or more species in China and Japan. 



The following brief list still further illustrates this: — 



Genera common to China, Japan, and the Atlantic side of the United 

 States of America. 



Again we find genera represented by one species each in China 



