MORPHOLOGY OF HIGHER PLANTS. 207 



Fig. 114. 'Monocotyledonous stem structure. Transverse section of rconvallaria 

 rhizome: E, epidermis; H, hypo dermis composed of collenchyma; C, cortex; EN, endo- 

 dermjs; S, sieve; T, ducts; P, parenchyma. The bundles are of the closed collateral and 

 concentric types. 



