ISSErfiSr}     Rh»*  Glab™  a»d  Rhus  Typhina. 
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more  instances  of  this  replacement  or  substitution  of  drugs  to  call 
our  attention  to  the  need  of  directing-  our  efforts  so  that  the  whole 
subject  of  collecting  of  drugs,  as  well  as  their  commerce  will  be 
under  some  official  control  rendered  effective  by  the  organizations 
vitally  interested  in  securing  uniformity  and  efficiency  of  drugs. 
Fig.  i. 
Numerous  non-glandular  and  a  few  of  the  small  glandular  hairs,  covering  the  surface  of  the  fruits 
of  several  species  of  Rhus,   g,  Rhus  glabra;  t,  Rhus  typhina;  and  b,  Rhus  glabra  borealis. 
Rhus  Glabra. 
Rhus  glabra  is  usually  known  as  the  "  smooth "  or  "  scarlet 
sumac,"  in  allusion  to  the  nearly  smooth  stems  and  scarlet  fruits.  It 
is  a  rather  common  shrub  growing  in  dry  soil  in  the  Eastern  United 
States,  extending  as  far  west  as  Arizona  and  northward  into  Canada. 
