LIST 



OF 



DEIED PLANTS COLLECTED IN JAPAN 



BY S. WELLS WILLIAMS, ESQ., AND DR. JAMES MORROW. 



This collection, hastily made as their small opportunities permitted, by Dr. Morrow and my 

 early friend, Mr. Williams, of the American Mission at Macao, has proved a very interesting 

 one, as might have been expected. No part of the world beyond his own country offers, as to 

 its vegetation, a greater interest to the botanist of the United States than Japan. This is not 

 the place to dwell upon the very remarkable relations which subsist between the Flora of Japan 

 and that of the United States, which have been more or less noticed ever since Thunberg's Flora 

 Japonica was published. As the present collection was principally made in the northern part of 

 Japan, it was naturally anticipated that it would add to the Japanese Flora a considerable num- 

 ber of species identical with, or closely allied to, those already known to inhabit Kamtschatka 

 and Northwest America. This proves to be the case ; and at the same time it has brought to 

 view an equal number of Eastern United States forms, no insignificant portion of which are 

 specifically identical. These interesting facts will arrest the botanist's attention as he turns 

 over these pages. I refrain from commenting upon these relations until another and perhaps a 

 larger collection of Japanese plants shall be made known, namely, that made by that excellent 

 and most assiduous collector, Mr. Charles Wright, in the North Pacific Exploring Expedition, 

 under Commodore Rodgers. 



The present collection makes known nearly forty new species and one new genus ; a very 



considerable number under the circumstances of the case. Thirteen of these are Carices ; but 



as most of these were gathered too early in the season, it is probable that the number will be 



somewhat reduced when they are better known. I have to thank my excellent friend, Dr. 



Boott, of London, the most learned Caricologist of the age, for having studied the specimens of 



this genus, and furnished the descriptions for this report. I have also to thank my promising 



young friend, Mr. Daniel C. Eaton, for having studied the Ferns of the collection, a department 



of botany to which he devotes special attention. Mr. Sullivant has obligingly determined the 



Mosses, and Prof. Harvey, of Dublin, the Algas of the collection. 



ASA GRAY. 



Clematis Florida, Thunb. Fl. Jap., p. 240; Sieb. & Zucc, Fam. Nat. Fl. Jap., (in Act. 

 Acad. Monac.) p. 68. Simoda. This is the very showy, large-flowered species, now well known 

 in cultivation under the name of G. Sieboldii. The plant from which the specimens were taken 

 was cultivated at Simoda. 



Clematis Japonica, Thunb. I. c. ? Simoda. The specimens are insufficient for positive deter- 

 39 s 



