PREFACE. 



Among the many thousands of persons who visit the national 

 parks each year a large nmnber are deeply interested in the plant 

 life, including not only the wealth of conspicuous flowering plants 

 but the trees of the forest also. All the national parks offer excep- 

 tional opportunity for the study and enjoyment of primeval vege- 

 tation, and in this respect none of them perhaps is better provided 

 with attractive and refreshing material than Glacier National Park, 

 Montana. The present paper has been written for the purpose of ena- 

 bling visitors to this park to become more familiar with its wild plants 

 and to derive greater enjoyment from them. This publication will 

 be useful not only in Glacier Park but elsewhere in the mountains of 

 Idaho, Alberta, and British Columbia. Most of the common plants 

 of Yellowstone National Park occur also in Glacier Park. The present 

 flora will be found helpful therefore to travelers in the Yellowstone 

 region. 



Frederick V. Coville, 

 Curator of the United States Natiojial Herbarium. 



