252 Plants collected during a journey 



COMMELINE^. 



44G. Tradescantia virginica, L. Purshjl. i. p. 218. 

 Dry gravelly hills about the lead mines of Missouri. 



447. COMMELINA ANGUSTJFOLIA, Mkhx. fl. 1. p. 24 ? 



Sources of the Canadian. 



Obs. The flowers are rather too much injured to enable 

 me to determine the species of this plant satisfactorily. 



FLUV1ALES. 



448. POTAMOGETON NATANS, L. Willd. Sp. pi. \. p. 71 2. 



Ponds near the Platte. 



449. P. fluitans, L. Willd. 1. c. p. 713. With the 

 preceding. 



450. P. diversifoliuMj Bart. Torr.jl. i. p. 197. Sources 

 of the Canadian ? 



451. Myuiophyllum verticillatum, L. Willd. sp. 

 pi. iv. p. 406. Ponds near the Platte. 



CYPERACEiE. 



452. Cyperus inflexus, Muhl. Torr.jl. i. p. 59. C. 

 uncinatus, Purshjl. i. p. 50. C. Purshii, R. ^ S. ii. p. 177. 

 Upper part of the Arkansa and Platte. 



453. Scirpus macrostachyos, Muhl. Torr. fl. i. p. 50. 

 Swamps along the Missouri. Dr. Baldwin. 



454. S. lineatus, Michx.fl. i. p. 32. Torr.jl. i. p. 51. 

 With the preceding. 



455. Fuirena squarrosa, Mkhx. fl. i. p. 37. On the 

 Arkansa ? 



