/ 



in different parts of the United States. 



Sj 



cessful. From the statements already given it may be inferreil 



difference of 



between the northern anil southern 



1 



extremities of the country is not less than two months anil a half. 



Difference of longitude does not seem very materially to affect 

 the Floral calendar within the United States. 



My best thanks are due to the gentlemen who have contrihut- 

 ed the materials for this compilation. 



liosf Oily Dec. ISir. 



P, S. A letter received while this article was in the presS; 

 from Professor Decandolle of Geneva in Switzerland; contains 



the following memoranda for that place in iSi7'^ 



Anemone nemorosa 

 Leontodon taraxacum 

 Amygdalus Persica 

 Primus Cerasus 

 Pyrus conmmnis 



Caltha palustris 



Pyrus MaUis 



March 15 



April I 



April 1 



April 3 



April ' 3 



April 



April 



8 

 15 



13 



/- 



