No. VIII. 



Catalogue of Plants collected during a Journey to and from the 

 Rocky Mountains, during thp summer nf isao. By E. P. 

 James, attached to the Exploring Expedition commanded by 

 Major S. H. Long, of the United States Engineers. And 

 by the Major cominunicated to the Society, xtith the permis- 

 sion of the Hon. J. C. Calhoun, Secretary of War. 



The Collection of Plants made during the excursion of 

 the exploring party commanded by Major Long, in the sum- 

 mer of 1820, contains a considerable number of species not 

 enumerated in this Catalogue. 



These have been necessarily withheld, for want of oppor- 

 tunity to make the requisite comparisons. Such only are 

 given, with a few exceptions, as have already been ascertain- 

 ed to belong to the Flora of North America. 



In the arrangement and nomenclature, Nuttall's " Genera 

 of North American Plants" has been principally followed. 



E. P. JAMES. 



CLASS I.— Order 1. 

 HippuRis vulgaris. Linn. 



Order 2. 

 Callitriohe verna. Willd. C. auturanalis. 

 CoRisPERMUM hyssopifolium. On the Missouri. 



Blitum chenopodioides. Nutt. On the Platte and Arkansaw, on arid and 

 saline soils. 



