3i8  Phannacogjiosy  of  Echinacea.         r  Am.  jour.  Phann. 
July,  1911. 
Fig.  I. 
Echinacea;  A,  cross  section  of  outer  layers  of  root,  showing  cork  (c)  and  hypodermis  (h) , 
S,  cross  section  of  cortex  showing  parenchyma  (p),  sphere  crystals  of  inulin  (i),  and  stone 
or  sclerotic  cells,  and  oleoresin  reservoirs  or  canals  (o).  C,  cross  section  of  portion  of  fibro- 
vascular  bundle  showing  leptome  or  sieve  (/),  cambium,  (m),  trachea  or  vessels  (i) ,  oleoresin 
reservoirs  (o),  stone  cells  {s),  parenchyma  {p)  and  inulin  crystals  (i) .  Z),  cross  section  near 
endodermis  showing  endodermal  cells  with  suberized  radial  walls  or  Casparyan  spots  (e),  endo- 
dermal  resin  canal  (o),  and  parenchyma  (p).  E,  cross  section  of  underground  stem  or  rhizome 
showing  a  group  of  bast  fibres  (fe),  leptome  or  sieve  (/),  and  parenchyma  {p) .  F,  a  sclerotic  or 
stone  cell.  G,  parenchyma  with  sphere  crystals  of  inulin  adhering  to  the  walls.  H,  longitudi- 
nal section  showing  various  forms  of  trachea  or  vessels;  d,  double  spiral;  a,  annular;  r,  with 
simple  pores;  p,  adjoining  parenchyma. 
