346 
ILLUSTRATIONS . 
Plate XI. 
DICOTYLEDONOUS STEM STRUCTURE. 
Fig. 64. — Transverse section through menispermum (rhizome); 
(E), epidermis, which is being replaced by cork (K) : 
(C), cortex; (B), bast fibers; (S), sieve; (ST), stone 
cells; (CA), cambium ; (T), ducts; (W), wood fibers! 
(M) medullary rays; (P) pith. 
