A  m.  Jour.  Pharm.  1 
September,  1894.  J 
Structure  of  Podophyllum. 
423 
immediately  within  the  endodermis  is  composed  of  somewhat  larger 
cells,  also  somewhat  elongated  in  a  tangential  direction.  The  ducts 
only  are  lignified. 
Fig.  6  shows  one  of  the  bundles  magnified  175  diameters.  The 
section  from  which  the  drawing  was  made  had  been  cleared  of  starch 
and  albuminous  matters.  a}  a  cell  of  the  endodermis;  b}  a  cell  of  the 
pericambium ;  ct  small  ducts  at  the  extremity  of  one  of  the  xylem 
rays;  d,  phloem. 
Fig.  6. 
The  starch  of  podophyllum  (Fig.  4)  is  rather  small-grained  and  very 
abundant.  Many  of  the  grains  are  simple  and  spherical  or  nearly  so, 
but  many  others  show  one  or  more  flat  faces,  indicating  that  they 
have  formed  a  part  of  a  compound  grain.  Many  of  the  larger  grains 
appear  more  or  less  lobulated,  and  some  of  those  which  are  nearly 
perfectly  spherical  show  radial  markings  extending  from  the  centre 
nearly  to  the  circumference.  These  are  really  compound  grains,  as 
is  readily  shown  by  treating  them  with  a  strong  solution  of  chloral 
