MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



Vol. 1, No. 2. BOTANY. Plates I-VI. Issued April 25, 1905. 



Application has been made for entrance as 2d class matter at Bozeman, Mont, postoffice. 



SUPPLEMENT TO THE FLORA OF MONTANA: 



ADDITIONS AND CORRECTIONS. 



BY J. W. BLANKINSHIP. 



jt 



PREFACE. 



The botanist in the American agricultural college must treat his 

 subject, both in his teaching and in his scientific research, from two 

 standpoints, that of pure science and that of its economic application, 

 <<:id no successful achievement can be hoped for in the latter without a 

 foundation in the larger data and wider knowledge of a more extensive 

 study of the subject in its general phases. The basis of any accurate 

 v.-ork in pure or applied botany is a good herbarium and technical li- 

 brary as well as a general knowledge of the physical, agricultural and 

 biological features of the region considered, and these collections 

 and library are the more necessary at a point remote from other 

 scientific institutions. Hence special effort has been made by the 

 Montana Agricultural College to build up a good herbarium of both 

 the Phanerogams and Cryptogams of the state and to secure a good 

 botanical library for their more accurate study, while the greater 

 part of our collections have either been named by specialists or taken 

 to the Gray Herbarium or the New York Botanical Garden for iden- 

 tification. 



Based largely upon these collections, Rydberg issued his "Cata- 

 logue of the Flora of Montana and the Yellowstone National Park" 

 ( 1900), the only complete enumeration of our species ever attempted, 

 but since its publication many new species have been described from 

 this state, while the extensive collections brought together in the her- 

 barium of the Montana Agricultural College, including in part at 

 l?ast nearly every private collection recently made in the state, 

 afford many times the number of specimens heretofore available for 

 the study of the flora of this region, thus enabling a number of errors, 

 due to paucity of "material, to be corrected, and extending by several 

 hundred the number of species indigenous to the flora of the state 

 or recently introduced within its bounds. 



In the present list, with a few exceptions, no attempt has been 



