LILY OF THE VALLEY 



97 



PIG. 37. Portion of a transverse section of convallaria rhizome; E, epidermis; 

 H, hypodermis composed of collenchyma; C, cortex; EN, endodermis; 

 S, perihadromatic sieve; T, tracheae or vessels; P, parenchyma. The bundles 

 are of the collateral and concentric types. 



