CONTRIBUTIONS FROM THE NEW YORK 

 BOTANICAL GARDEN— No. 235 



PHYTOGEOGRAPHICAL NOTES ON 

 THE ROCKY MOUNTAIN REGION 



X. GRASSLANDS AND OTHER OPEN 



FORMATIONS OE THE MONTANE 



ZONE OF THE SOUTHERN 



ROCKIES 



P. A. RYDBERG 



NEW YORK 

 1922 



Reprinted without change of paging, from Bulletin op the Toebey Botanical Cldb 

 48:315-326. February 28, 1922 



