CONTRIBUTIONS FROM THE NEW YORK BOTANICAL 

 GARDEN— No. 129 



STUDIES ON THE ROCKY 

 MOUNTAIN FLORA-XX 



By per axel RYDBERG 



NEW YORK 

 1909 



Keprinted. without change of paging, from Bulletin of th« Torrey Botanical Club 36. 

 *^ 676-698. 28 D 1909 



