122 THE VEGETATIVE FUNCTIONS OF PLANTS 



Fig. 8i. — Sensitive plant {Mimosa pudica). B, normal position of foliage 

 in light; A, position of foliage after the plant was slightly shaken. 



Fig. 82. — Oxalis buplenrifolia. p, Petiole; b, trifoliolate blade. At the 

 left, leaflets in normal attitude in light; at the right, attitude of leaflets at 

 night or after sudden shock. 



