to the Rocky Mountains. 103 



nished me with almost a complete set of the specimens col- 

 lected in his last journey. 



A considerable number of the new and rare plants enume- 

 rated below, are not contained in Dr. James' catalogue, as he 

 bad not the books and other necessary means for examining 

 them properly at his disposal. Among these are some which 

 are peculiarly interesting to American botanists, such as Po- 

 maria glandulosa, Caltha sagittate, &ic. which have not been 

 hitherto found north of Mexico. Indeed, the vegetation about 

 the sources of the Arkansa and Canadian very much resem- 

 bles that of Mexico, so that it was necessary to make a par- 

 ticular comparison of our plants with those described by 

 Humboldt Bonpland and Kunth. 



DICOTYLEDONEiE. 



RANUNCUJLACEiE. 



1. Anemone tenella, Purshfl. ii. p. 386. A. carolini- 

 ana, Walt. Ell. Sk. ii. p. 53? 



Obs. This appears to be distinct from the A. caroliniana 

 of Walter as described by Elliott, (1. c.) Dr. James collected 

 his specimens on the Platte. 



2. A. pennsylvanica, L. Pursh.fi. ii. p. 387. 



3. A. ludoviciana, Nutt. gen. ii. p. 20. Council 

 Bluffs. 



4. Delphinium virescens, Nutt. gen. ii. p. 4. On the 

 Missouri. 



5. D. azureum, Michv. Near St. Louis. 



6. Hydrastis canadensis, L. Pursh.fi. ii. p. 289. 



7. Ranunculus Purshii, Richardson App. Frank, nar. 

 ed. 2. p. 23. f Sources of the Platte. 



Obs. Found also on the barren grounds of Arctic Ame- 

 rica by Dr. Richardson, who supposes it to be the R.jistulo- 

 sus of Pursh. ined. in. Herb. Lambert. 



