THE  AMERICAN 
JOURNAL  OF  PHARMACY 
SEPTEMBER,  1895. 
STRUCTURE  OF  OUR  CHERRY  BARKS.  " 
By  Bdson  S.  Bastin. 
Presented  to  the  American  Pharmaceutical  Association,  Denver  Meeting,  1895. 
The  knowledge  that  the  barks  of  two  or  more  of  our  native  spe- 
cies of  cherry  were  occasionally,  at  least,  substituted  for  the  official 
species  has  led  to  the  studies  set  forth  in  this  paper. 
The  species  of  cherry  growing  wild  within  the  limits  of  the 
United  States  are  the  following :  Prunus  Pennsylvanica,  Linne 
filius;  Prunus  Virginiana,  Linne;  Prunus  serotina,  Ehrhart ;  Prunus 
demissa,  Walpers  ;  Prunus  Avium,  Linne  ;  Prunus  Cerasus,  Linne  ; 
Prunus  Mahaleb,  Linne  ;  Prunus  Caroliniana,  Aiton  ;  Prunus  splice- 
rocarpa,  Swartz  ;  Prunus  emarginata,  Walpers,  var.  mollis,  Brewer ; 
and  Prunus  ilicifolia,  Walpers. 
This  list  excludes  the  closely  related  plums  and  those  species  of 
cherry  which  do  not  attain  dimensions  greater  than  those  of  a  small 
shrub. 
Of  the  species  listed  the  barks  of  the  following  have  been  studied 
and  are  here  described  and  figured  :  P.  serotina,  P.  Avium,  P.  Maha- 
leb,  P.  Virginiana  and  P.  Pennsylvania.  Efforts  were  made  to  pro- 
cure the  barks  of  P.  Caroliniana,  and  of  the  Pacific  Coast  species, 
P.  demissa,  P.  emarginata,  and  P.  ilicifolia,  but  so  far  without 
success. 
Primus  serotina,  commonly  called  the  Black  cherry,  is  a  tree  of 
large  size,  common  in  the  forest  regions  of  the  United  States,  from 
Minnesota,  eastern  Nebraska,  and  Louisiana,  eastward  to  the 
Atlantic.  It  also  occurs  in  southern  Canada  and  Nova  Scotia.  It 
does  not  occur  in  the  Rocky  Mountains  or  west  of  them,  except  as 
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