THE  AMERICAN 
JOUKNAL  OF  PHARMACY 
By  Edwin  L.  Newcomb,  College  of  Pharmacy^Mib!s^ 
The  available  outer  morphological  descriptions  of  Atropa  Bella- 
donna and  Hyoscyamus  niger  are  quite  complete  and  but  little  can 
be  added.  It  was  noted  that  a  few  of  the  Belladonna  plants  were 
especially  characterized  by  being  very  hairy,  and  such  plants  were 
found  growing  mostly  in  plots  which  had  been  fertilized  with  cyan- 
amide  or  sodium  nitrate. 
Excellent  anatomical  descriptions  of  Belladonna  and  Hyoscyamus 
have  been  prepared  by  various  workers,  but  some  exceedingly  char- 
acteristic features  appear  to  have  been  omitted.  Microscopical  exam- 
inations which  I  have  made  from  time  to  time  as  the  plants  grew 
revealed  the  presence  of  distinct  branching  hairs  on  Atropa  Bella- 
donna, Hyoscyamus  niger,  annual  and  biennial,  and  on  H.  albns. 
The  branching  hairs  in  H.  niger  and  H.  albus  are  very  much  alike, 
probably  identical,  while  those  found  on  Belladonna  were  of  the 
same  general  forms,  but  usually  much  shorter  and  not  so  thick  at 
the  base.  A  number  of  different  types  of  branching  hairs  were 
observed,  as  is  indicatecLby  the  illustrations. 
In  Hyoscyamus  these  hairs  occur  on  the  basal  margins  of  the 
sessile  leaves  and  on  the  edges  of  the  petioles  of  the  petioled  leaves, 
(Continued  from  December,  1914.) 
Part  II — Morphological  Studies. 
1  Presented  to  the  Philadelphia  College  of  Pharmacy  for  'the  degree  of 
Master  in  Pharmacy  in  course. 
(1) 
