REPORT OF THE STATE BOTANIST IQI4 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. 
