STATE HORTICULTURAL COMMISSION 



ELLWOOD COOPER, Commissioner 



THE RUSSIAN THISTLE 



ITS INTRODUCTION AND SPREAD 



IN CALIFORNIA, WITH LAWS AND 



MEASURES FOR ITS CONTROL 



WITH A DESCRIPTION OF THE CANADA AND 

 SCOTCH THISTLES 



SACRAMENTO 



w. \v. SHANNON, : : : : : SUPERINTENDENT STATE PRINTING 



1905 



