666 



WEED FLORA OF IOWA 



Fig. 519. Needle Grass (Stipa spartea) . In pastures. 

 (Photographed by Charlotte M. King.) 



%^^, 



r J .-WV' A 



Fig. 520. 



Purple Cone Flower (Brauneria purpurea). 

 (Photographed by Pammel. ) 



In a prairie pasture. 



