DEPARTMENT OF THE INTERIOR 



Albert B. Fall, Secretary 



UNITED STATES GEOLOGICAL SURVEY 



George Otis Smith, Director i 



Professional Paper 130 



THE LARAMIE FLORA OF THE DENVER BASIN 



WITH A REVIEW OP THE LARAMIE PROBLEM 



F, H. KNOWLTON 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 

 1922 



