3^6 



WEED FLORA OP IOWA 



Fig, 225-A. Distribution of Chicory. 



Dandelion (Taraxacum ojjicmale Weber). 

 Description. — ^A smooth, or at first pubescent, biennial or per- 

 ennial ; the many-flowered head borne on a slender hollow scape ; 

 root leaves pinnatifid or mneinate ; involucre double, the outer of 



F^G. 226. Dandelion (Taraxacum officinale). Long root, sometimes to a deptlJ 



of three and one-lialf feet in the soil. 



(Photographed by Gardner.) 



