io8 



Muhlenbergia, Volume 8 



ALPINE PLANTS— XII 



By p. Beveridge Kennedy 



Alpine Sorrel 

 OxYRiA DiGYNA (L.) Hill, Hort. Kew. 158. 17.68. 



Rumex digyniis L. Sp. Pi. ^iZl- ^753- 



Oxyria digyna Caraptdera, Rumex 'i-^^- pi- 3- /■ J- 1819. 



Oxyria reitiformis Hook. Fl. Scot. iii. 182 1. 



Our illustration represents one of the few plants that are 

 found growing indigenously in both the eastern and western 

 hemispheres. It is found on all the great mountain ranges of 

 Europe and Asia. On the North American continent it ranges 

 from Greenland, Labrador and the higli mountains of the New 

 England States to Alaska, thence south through the Rocky 

 mountains and the Cascade and Sierra Nevada ranges. It also 

 occurs on the high peaks of the Great Basin region. 



iMR-iire 18. Oxyria dig-yna (L. ) Hill 

 The thick and long roots penetrate deeply among the crev- 

 ices of the la\a rocks, indicating its excellent qualifications for 

 rockery purposes. The bright red fruits contrasting with the 

 green leaves make it an exceedingly ornamental plant. The 

 photograph was taken on Mt. Rose, Washoe cotint\-, Nevada, in 

 August, 191 2, at an elevation of about loooo feet. 



