REPORT OF THE STATE BOTANIST I914 39 



Most of these species have been observed for from two to four 

 years, and it is an interesting conjecture as to whether they will be- 

 come permanent members of our flora or soon disappear. Some of 

 them are already well established in many localities, such as 

 Salsola pestifer, Verbena bracteosa and Grand- 

 elia squarrosa, which are fast becoming obnoxious weeds in 

 many places. 



