262 



WEED FLORA OF IOWA 



Fig. 150-A. Distribution of Stlqkseed. 



Com Gromwell {Lithospernmm, arvense L.). 

 Description. — ^A pubescent aiinual with stems 6-12 in. high, 

 with bright green, lanceolate, linear, or oblong, sessile leaves; 



Fig. 161. Corn Gromwell or Puccoon (.Lithospermum arvense). A common 

 roadside and field weed of Europe. Southern Iowa and Missouri. Small 

 white flowers. 



(Photographed by Colburn.) 



