Am.  Jour.  Pharm.  \ 
September,  1904.  i 
Anatomy  of  Edible  Berries. 
435 
with  radial  walls  about  o-oo6  millimeter  long.  As  seen  in  surface 
view,  they  are  pointed,  and  often  are  arranged  side  by  side  in  rows. 
They  vary  up  to  oio  millimeter  in  length,  and  usually  between 
O  OIO  and  0-015  millimeter  in  width. 
Nucellar  Layer  {Fig.  j,  N).— This  coat  consists  for  the  most  part 
of  obliterated  cells,  forming  a  cellulose  layer  from  0-002  to  0-004 
millimeters  thick,  but  on  the  ventral  side  the  cells  are  often  well 
defined. 
Endosperm  [Figs.  3  and  4.,  E). — Transverse  sections  show  that  the 
endosperm  is  but  one  cell  thick,  although  here  and  there  a  cell  is 
divided  by  a  tangential  partition,  forming  twin  cells.    Seen  in  surface 
view  the  cells  are  triangular,  square  or  polygonal.  In  glycerine 
mounts  of  fresh  or  alcoholic  materials  irregularly  spherical  aleurone 
grains  are  evident.  In  nearly  every  point  these  cells  resemble  the 
aleurone  layer  of  the  cereal  grains. 
Embryo. — Two  large  cotyledons,  each  in  cross  section  semi- 
elliptical,  make  up  the  bulk  of  the  embryo.  They  are  built  up  of 
thin-walled  cells,  much  the  same  as  in  the  cotyledons  of  many  other 
seeds,  and  contain  protein  and  fat,  but  no  starch. 
Style  and  Stigma  (Figs.  5  and  6). — The  strawberry  style  is  dis- 
tinguished from  the  styles  of  other  edible  rosaceous  fruits  by  its 
constricted  base  and  the  large  size  and  transparency  of  the  epidermal 
Fig.  5. — Strawberry  style  and  stig- 
ma.   X  32- 
Fig.  6. — Strawberry  style  in  surface 
view,  ep,  transparent  epidermis  ;  sp, 
spiral  vessels;  k,  crystal  cells.   X  300. 
