Fig. IIS. Dicotyledonous stem structure. Transverse section through menispermum 

 rhizome: E, epidermis; lenticel derived from phellogen (K); C, cortex; B, bast fibers; S, 

 leptome; ST, stone cells; CA, cambium; T, vessels; W, wood fibers; M, medullary-ray 

 cells; P, pith. 



