274 



WEED FLORA OF IOWA 



Fig. 158. Catnip (Nepeta cataria). Trichome or plant hair at the right. Com- 

 mon in waste places. 

 (Photographed by Colburn. Drawing of hair by Charlotte M. King.) 



Figure 158A Figure 158B 



Fig. 158-A. Plant hair or trichome from leaf of catnip. 

 (Drawing by Charlotte M. King.) 

 Fig. 158-B. Distribution of Catnip. 



