NOTICE. 



Experience having shown that some years must elapse before this work 

 can bo completed, and a new impression of the part first published (in 

 1878) being called for, it is expedient now to issue the two parts, which 

 together comprise all the Gamopetalous Dicotyledons, in the form of a 

 single volume, under the auspices of the Smithsonian Institution. 



Both parts have been corrected, as far as could well be done upon 

 the electrotype plates ; a supplement of eleven pages is added to the very 

 recently published Volume I. Part II., and its full index has been made 

 anew. The tabular enumeration of the contained genera and species has 

 been transferred to the end of the Gamopetalse. To Volume 11. Part I., a 

 supplement of seventy pages is added, and a few pages have been recast ; a 

 tabular enumeration of all the gamopetalous genera and species is appended, 

 and a complete index of genera, species, synonyms, &c., — making an 

 extension from 402 to about 500 pages. 



Herbarium of Harvard University, 



January 1, 1886. 



