250 Plants collected during a journey 



flexibility, numerous and recurved, forming a large dense top. 

 The hunters and Indians use the seeds for food. This species 

 appears to be allied to Pinus occidentalis of Mexico. 



429. P. nigra, Pursh fl. ii. p. G40. On the Rocky 

 Mountains, with the two following. 



430. P. CANADENSIS, Pursh 1. C. 



431. P. balsamea, L. Pursh fl. ii. p. 639. 



432. Juniperus communis, L. Pursh fl. ii. p. 646. On 

 the Rocky Mountains. 



433. J. virginiana, L. Pursh 1. c. p. 647. Sources of 

 the Arkansa and Platte to the Rocky Mountains. 



MONOCOTYLEDONEiE. 



ORCHIDE.E. 



434. Orchis dilatata, Pursh fl. ii. p. 5S8. Sources of 

 the Platte and Arkansa. 



IRIDE^E. 



435. Sisyrinchium mdcronatum, Mich. Torr.fl. i.p. 42. 

 On the Missouri and Platte. 



LILfACE^:. 



436. Yucca filamentosa, fVilld. Pursh fl. i. p. 227. 

 Summit of dry sandy ridges on the upper part of the Platte. 



Obs. Root 2-3 inches in diameter, descending undivided 

 to a great depth, and then branching. 



437. Calochortus elegans, Pursh fl. i. p. 240. Base 

 of the Rocky Mountains. 



