CONTRIBUTIONS FROM THE NEW YORK BOTANICAL 



GARDEN— No. 134 



STUDIES ON THE ROCKY 

 MOUNTAIN FLORA-XXII 



By PER AXEL RYDBERG 



NEW YORK 



1910 



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



Club 37: 313-335. 21 Jl 1910 



