To those iv/io Herborize with the Manual of Botany. 



In the preface to the Manual, at the 7th page* notice Was giv- 

 en that Mr. E. James would supply the omission of 6ynonyms, 

 &c But when the manuscript of this catalogue was completed, 

 and in this state examined by the author of the Manual and by 

 Mr. James* the contemplated publication of a list of synonyms 

 and authorities was relinquished. For in this catalogue may be 

 found most of the synonyms and authorities Which Would be of 

 any use to instructors or students residing in the northern or 

 middle states. 



A few genera, which are included in this catalogue, do not 

 correspond with those of the Manual in their systematic loca- 

 tion. This difficulty will be obviated by the Indexes. The sub- 

 divisions of genera, adopted in this catalogue, may be adjusted 

 to their places in the manual by the aid of the index and the class- 

 ification* 



The difference in English names is not worth noticing. The 

 Huthor of the Manual frequently adopted the names in common 

 use in New-England and in the interior of the state of N. York. 

 In this catalogue the names which we find in the English books 

 are" often preferred. 



A. E. 



Albany, March 11, 18l9. 



