512 
Powdered  Vegetable  Drugs. 
/Am.  Jour.  Pharm. 
I     October,  1898. 
47.  Dulcamara. — Crystal-sand;  starch,  5-7  pt ;  acicular  crystals 
in  parenchyma  of  bark;  ducts  with  bordered  pores;  ducts  35-45  fi 
in  width,  and  accompanied  with  sklerenchyma  fibres  ;  occasional 
single  bast  fibre  ;  cork. 
B.  CALCIUM  OXALATE  CRYSTALS  FEW  OR  WANTING. 
a.  Simple  hairs  present : 
48.  Absinthium. — T-non-secreting  hairs  ;  secreting  hairs. 
49.  Belladonnce  Folia. — Might  be  considered  here  as  crystal-sand 
could  be  overlooked.    See  No.  46. 
50.  Buchu. — See  No.  89. 
5 1 .  Castanea. — See  No.  10. 
52.  Chelidonium. — Non-secreting  hairs;  milk  vessels  contain  red- 
dish masses  ;  epidermis  with  papillae  and  cells  with  sinuate  margins 
on  surface  view ;  acicular  crystals  sometimes  observed  in  glycerin 
mounts. 
53.  Digitalis. — Characteristic  non-secreting  and  secreting  hairs  ; 
stomata  each  with  4-5  nebenzellen. 
54.  Eriodictyon. — See  No.  14. 
55.  Eupatorium.  —  Non-secreting  and  secreting  hairs;  pollen 
grains  15  fi;  characteristic  style. 
56.  Galla. — See  No.  14. 
57.  Hamamelis. — See  No.  33. 
58.  Hedeoma. — Non-secreting  hairs,  2 -3-celled  ;  peculiar  thick- 
ened or  reticulated  cells  of  anther ;  in  glycerin  mounts,  crystals  of 
carbohydrate  in  "Athemhbhle." 
59.  Insect  Powder. — See  No.  19.    Crystals  may  not  be  observed. 
60.  Hyoscyamus. — See  No.  34. 
61.  Lobelia. — Non-secreting  hairs ;  sklerenchyma;  pollen  grains 
30  x  1 5  fx ;  reticulated  seed  coat.  Leaves  distinguished  from  herb  in 
that  in  the  former  fewer  pollen  grains  and  seeds  are  present. 
62.  Matico. — Non-secreting  hairs  of  two  kinds,  few  short,  but  num- 
erous long  and  peculiarly  jointed  ;  oil  secretion  reservoirs,  numerous 
in  tissues  of  fruit;  spiral  ducts;  pollen  grains  nearly  cubical;  much 
sand  in  among  the  fruit  fragments. 
63.  Marrubium. — 1-4-celled,  non-secreting  hairs,  either  single  or  in 
groups ;  large  oil-secreting  hairs. 
64.  Mentha  Piperita  \  In  chloral  mount  violet-colored  fragments 
and  >     of  petals ;  pollen  grains ;   jointed  non- 
65.  Mentha  Viridis.  )     secreting  and  secreting  hairs.    In  Men- 
