CONTRIBUTIONS FROM THE NEW YORK BOTANICAL 



GARDEN— No. 23 



STUDIES OiN THE ROCKY MOUNTAIN FLORA 



YIII. 



BY PER AXEL RYDBERG. 



NEW YORK 

 1902 



[Reprinted from Bulletin Toreey Botanical Clue, 29 : 2S3-2i6, April 24, 1902.] 



