THE AMERICAN BOTANIST 133 



Oxyria digyna. Mountain Sorrel. An Arctic-alpine 

 species. The root-stocks and- leaves are eaten by the natives of 

 the Far North. 



Atriplex spp. Salt Bush. Pigweed. Several species of 

 Atriplex are useful as pot-herbs. 



Berberis repens. Oregon Grape. The ripe berries are 

 unsurpassed for jelly making. 



Rhodiola rosea. Rose-root. King's Crown. Another 

 Arctic-alpine plant. The fragrant root-stocks are eaten by 

 natives of the Arctic regions. 



Psoralen esciitcnta. Pome Blanche. The turnip-shaped, 

 mealy, farinaceous roots are edible and said to be a good sub- 

 stitute for potatoes, 



Chamaenerion latifolium. Willow-herb. The roots and 

 young shoots are eaten by natives of Northern Greenland. 



Valeriana edulis. Valerian. The large, spindle-shaped 

 roots are eaten by the Indians. 



Balsamorrhiza sagittata. Arrow-leaf. The thick fra- 

 grant roots are eaten by the Indians. 



Artemisia spp. Sage. The leaves were used to brew the 

 famous sage tea, a pioneer cure-all. Several species are reputed 

 to possess medicinal value. Artemisia frigida, the Rocky 

 Mountain sage, and A. tridentata, the black sage or sage brush, 

 are oftenest used. A. frigida is sold as "Mountain Sage." 



