Am.  Jour.  Pharm.  1 
February,  1897.  / 
Solatium  Carolinense . 
81 
The  cortex  is  mainly  composed  of  parenchyma  tissue ;  the  cells 
are  round,  but  otherwise  correspond  to  the  same  tissue  in  the  root. 
The  woody  tissue  is  rather  irregular  in  width,  and  beside  the  phloem 
tissue  on  its  exterior,  there  is  a  distinct  inner  phloem,  which,  though 
narrower  in  some  places  than  in  others,  is  distinctly  discernible. 
The  pith  is  composed  of  large  parenchyma  cells. 
Fig.  6,  transverse  section  of  underground  stem  of  Solanum  Carolinense 
(from  a  portion  just  at  or  beneath  the  ground),  magnified  56  diameters.  A, 
epidermis  ;  b,  cork  cells  ;  c,  cf>  secretion  cells  of  the  cortex ;  d,  cambium  ;  e, 
xylem ;  p,  secondary  or  inner  phloem,  beneath  which  are  the  soft,  parenchy- 
matous cells  of  the  pith. 
The  petiole,  as  seen  in  transverse  section  in  Fig:  7,  shows  three 
bi-collateral  bundles.  Beneath  the  epidermal  tissue  are  several  rows 
of  collenchyma  cells,  and  next  to  these  are  the  parenchyma  cells 
surrounding  the  vasal  bundles.  Two  large  secretion  reservoirs  are 
found,  one  on  each  side,  near  the  upper  surface.  Some  starch  is 
present  in  the  parenchymatous  cells  of  the  stem,  principally  in  the 
