*  m.  Jonr.  Pharm.  \ 
November,  1895.  / 
Eriodictyon  Glutinosum. 
569 
rounding  the  vasal  bundle ;  e,  crystals  of  calcium  oxalate  in  the 
parenchyma  cells  closely  encircling  the  vasal  bundle ;  /,  phloem 
portion  of  the  vasal  bundle  facing  the  lower  surface  of  the  leaf;  g, 
xylem  portion  of  vasal  bundle  showing  the  radial  arrangements  of 
ducts. 
Fig.  4.. — Transverse  section  of  a  portion  of  lamina  adjoining  mid- 
rib, magnification,  50  diameters ;  a,  epidermal  cells  arranged  in  a 
single  layer,  cells  very  thick- walled  ;  b,  layers  of  palisade  parenchyma 
Fig.  5. 
composed  of  several  rows  of  cells  and  containing  crystals  of  calcium 
oxalate  ;  c,  spongy  parenchyma  adjoining  lower  epidermis  of  leaf ;  d, 
transverse  section  through  lateral  vein,  showing  small  vasal  bundle; 
ef  long,  matted  hairs  upon  lower  surface ;  /,  portion  of  adjoining 
midrib ;  g,  slightly  revolute  margin. 
Fig.  5. — Longitudinal  section  of  parenchyma  cells  of  midrib, 
magnification,  250  diameters  ;  a,  pit  in  parenchyma  cells  as  seen  in 
section;  b,  pits  in  parenchyma  cells  face  view,  longitudinal  section 
of  cells  ;  c,  middle  lamella. 
