Plant
              
                - Annual bedding flower
 
                - 6-48" tall
 
                - Upright habit
 
              
            
          
         
        
          
            
            
              Stem
              
                - Opposite leaf arrangement, sometimes alternate on upper stems
 
              
            
          
         
        
          
            
            
              Leaf
              
                - 2-3" long
 
                - Narrow, linear
 
                - Simple, smooth-edged
 
              
            
          
         
        
          
            
            
              Flower
              
                - Small, clustered in large, dense, terminal spikes
 
                - Unique, two-lipped irregular shape 
 
                - Yellow, red, pink, orange, bronze, purple, lavender, white