MEMOIRS 



AMERICAN ACADEMY 



I. 



Chloris Boreali-Americana : Illustrations of New, Rare, or oth- 

 erwise Interesting North American Plants, selected chiefly from 

 those recently brought into Cultivation at the Botanic Garden of 

 Harvard University, Cambridge. 



By ASA GRAY, M. D., 



FISHER PROFESSOR OF NATURAL HISTORV, ETC. 



DECADE I. 

 {Communicated to the Academy, January 27th, 1846.) 

 I 



This memoir is designed to contribute in some degree to the 

 advancement of North American botany, by illustrating several new 

 or scarcely known plants, especially those of which the floral struc- 

 ture, natural affinities, or generic characters have hitherto been 

 imperfectly made out, or in some respects misapprehended. The 

 subjects chosen for illustration in this first decade are none of them 



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