CONTRIBUTIONS FROM THE NEW YORK 

 BOTANICAL GARDEN— No. 17G. 



PHYTOGEOGEAPHICAL NOTES ON 

 THE EOCKY 3I0UNTAIN REGION-IV 



FORESTS OF THE Si BALPIXE AND MONTANE ZONES 



P. A. RYDBERG 



NEW YORK 

 1915 



Reprinted without change of paging from Bulletin of the Torrey Botanical Club 



42: 11-15. 30 Ja. 1915 



