f-rmm 
UNITED STATES DEPARTMENT OP AGRICULTURE 
BULLETIN No. 545 
Joint Contribution from the Forest Service, HENRY S. GRAVES, Forester 
and the Bureau of Plant Industry, WM. A. TAYLOR, Chief 
Washington, D. C. PROFESSIONAL PAPER October 8, 1917 
IMPORTANT RANGE PLANTS: 
THEIR LIFE HISTORY AND FORAGE VALUE 
By 
ARTHUR W. SAMPSON, Plant Ecologist, Forest Service 
CONTENTS 
Page 
Object of the Study ..,„.,.. 1 
Character of the Range and Forage 
Studied . . 2 
General Morphology of Grasses ... 4 
Page 
Important Species ......... 4 
Summary ............ 55 
Appendix: Plan of Study 61 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1917 
