CONTEIBUTIONS FROM THE NEW YORK BOTANICAL 

 GARDEN— No. 141 



STUDIES ON THE ROCKY 



MOUNTAIN FLOM-XXY 



By per axel RYDBERG 



NEW YORK 

 1911 



Reprinted, without change of paging, from the Bulletin of theTorjiey Botanical 

 Club 3S: 11-23. 15 F 1911 



