CONTRIBUTIONS FROM THE NEW YORK BOTANICAL 



GARDEN— No. 12. 



STUDIES ON THE ROCKY MOUNTAIN 



FLORA-IV 



BY p. A. RYDBERG 



NEW YOEK 

 1901 



[Reprinted from the Bulletin of the Toerey Botanical Club. 2S:. 20-S8 31 Jan., 1901.J 



