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IX. ^n Enumeration of the Plants of the Galapagos Archipelago; with De- 

 scriptions of those which are new. By Joseph Dalton Hooker, Esq., 

 M.D., F.L.S. Ssc. 8sc. 



Read March 4th, May 6th, and December 16th, 1845. 



J OR the materials upon which the following Flora of the Galapagos Islands 

 has been constructed I am mainly indebted to Charles Darwin, Esq., who 

 formed a collection of plants in that group during the voyage of H. M. Ship 

 ' Beagle.' On my return from the Antarctic expedition, I expressed to that 

 gentleman a wish to examine the botanical results of Captain Fitzroy's 

 voyage, and to incorporate the plants with my own ' Flora Antarctica,' and 

 through his kindness the collections in question were liberally given over to 

 me by Professor Henslow of Cambridge, in whose charge they had been 

 placed for the University. Mr. Darwin drew my attention to the striking 

 peculiarities which mark the Flora of the Galapagos group, and to the fact 

 that the plants composing it not only differ from those of any other country, 

 but that each of these islands has some particular productions of its own, 

 often representatives of the species which are found in the others of the 

 group. 



My first attempt to give any clear exposition of these features in the 

 vegetation was frustrated by the novelty of the species themselves, forbidding 

 any direct comparison of the Flora with that of adjacent countries. A clear 

 determination of the plants themselves was indispensable ; and I have now 

 the honour of laying before the Society the names of the species, with descrip- 

 tions of what have proved to be new, and some notices as to the ranges of 

 others previously known. I must here beg to acknowledge the assistance I 

 received from Professor Henslow, by whom the investigation of the species 

 was commenced. These, together with some others collected by various voy- 

 agers, though perhaps composing but a small proportion of the Flora of the 



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