240 Plants collected during a journey 



379. A. argentea, Nutt. 1. c. On the Platte. 



Obs. There was another species of Alriplex in the collec- 

 tion, but the specimen was imperfect and could not be deter- 

 mined satisfactorily. A. fruticosa ? undique canescens ; foliis 

 lineari-oblongis, obtusiusculis, integerrimis; floribus glomera- 

 tis, subterminalibus ; calycibus fructiferis latissimis, dentatis, 

 pedicellatis. Allied to A. linifolia, Kunth ? 



380. Blitum chenopodoides, Nutt. gen. i. p. 4. Arid 

 and saline soils on the Platte and Arkansa. 



3S I . Corispermum hyssopifolium, /3. americanum, Nutt. 

 gen. i. p. 4. On the Missouri. 



382. Polycnemum americanum, Nutt. gen. i. p. 30. On 

 the Platte. 



383. Phytolacca decandra, L. Willd. sp.pl. Ill - p. 822. 

 Purshfl. i. p. 324. On the Canadian and upper part of the 

 Arkansa. P. bogotensis, Kunth ? 



POLYGONE.E. 



384. Polygonum viviparum, L. Torr. Ann. Lye. i. p. 34. 

 Rocky Mountains. 



Obs. On examining other specimens of this plant col- 

 lected by Dr. James, I find some that are viviparous, with 

 cylindrical spikes, so that the variety which I formerly de- 

 scribed, is accidental. 



355. P. aviculare, (3. glaucum. P. glaucum, JVutt.gen. 

 i. p. 254. Torr. fl. i. p. 400. Common on the Platte and 

 Arkansa, near the Rocky Mountains. 



356. Oxvria reniformis, R. Brown, Torr. Ann. Lye. i. 

 p. 31. Rocky Mountains. 



Obs This interesting plant has also been found on the 

 White Hills of New Hampshire, by W. Oakes, Esq. Capt. 

 Parry collected it in Melville Island, and Capt. Sabine in 

 West Greenland. 



