100 



BULLETIN OF THE 



western territory, including Colorado, New Mexico, Utah, Arizona 

 and Nevada, and continued through five years of exploration. 

 They may be taken therefore to represent, with some correctness, 

 the general character of our Western Flora, exclusive of the 

 Pacific Coast. The facts given are derived from the " Table of 

 Orders" on page 379. In both cases varieties are excluded. 



For the remaining floras compared in the table, (Nos. 1, 2, and 

 6,) to avoid re-compilation, the data previously used are repeated, 

 species and varieties, including also introduced plants, being em- 

 ployed. As already intimated, however, this difference in the basis 

 of compilation of different floras, applying as it does to the several 

 groups and to the aggregate alike, cannot materially affect the per- 

 centages as computed. 



The following is the Table of Percentages : 



