164 GROWTH AND WORK OF PLANTS 



stands erect, and is known as the "banner" or "standard." 

 The two lateral petals are irregularly wedge-shaped, and are 



Fig. 120. 

 Flowers of sweet pea in front and side view. 



Fig. 121. 

 Details of petals of sweet pea flower; banner above, wings at the side, keel below. 



forked at the smaller end (said to have two claws). These two 

 petals, because of their position, are known as the "wings" or 

 alee. The two front petals are partially united into one in the 



