;62 
Coriaria  myrtifolia  as  an  Adulterant.    (Am-  ToU1"-  Ph*r 
J      J  *-    August,  1918. 
Sciences  at  Philadelphia  and  from  the  Martindale  herbarium  at  the 
Philadelphia  College  of  Pharmacy  and  I  am  especially  indebted  to 
the  latter  collection  for  material  which  permitted  the  arrival  at  a 
satisfactory  conclusion. 
Fig.  7.    Leaves  of  Coriaria  myrtifolia  L.    Natural  Size.    The  large  leaf  is 
from  the  specimen  C.  angustifolia  referred  to  in  text. 
The  leaves  of  Coriaria  myrtifolia  vary  from  elongated  lanceolate 
to  broadly  ovate  lanceolate  or  even  rhomboid  in  shape,  are  glabrous 
throughout,  upper  surface  bright  green,  lower  pale  yellow-green, 
margin  entire.  A  characteristic  is  the  three  prominent  veins,  the 
midrib  runs  to  the  apex  of  the  leaf  and  the  two  lateral  veins  starting 
Fig.  8.    Venation  of  Coriaria  myrtifolia  Leaf;  X  15- 
from  near  the  base  run  nearly  parallel  to  the  margin  and  well  past 
the  center  of  the  leaf.  Examination  shows  that  the  venation  is  not 
as  simple  as  it  appears  at  first  sight ;  there  are  several  minor  lateral 
veins  starting  from  the  midrib  and  all  of  the  veins  divide  and  spread 
fairly  well  through  the  lamina  so  that  while  there  is  no  apparent 
anastomizing  or  reticulation  of  the  surface  there  is  a  well-marked 
venation  as  shown  by  Figure  8. 
Under  the  microscope,  the  dermal  cells  appear  polygonal  in  out- 
