AmddTevPmim'}         Powdered  Vegetable  Drugs.  513 
tha  piperita  sometimes  find  in  the  secretion  hairs  crystals  of 
Menthol.  Non-secreting  hairs  peculiar  and  apparently  more 
abundant  in  Mentha  viridis  than  in  M.  piperita ;  taste  test  charac- 
teristic for  each. 
66.  Nux  Vomica. — Non-secreting  hairs  give  the  characteristic  reac- 
tion for  lignin;  endosperm,  with  thick  walls,  contains  oil  and  protein  ; 
blue  with  H2S04  -f  K2Cr207. 
67.  Pulsatilla. — Non-secreting  hairs,  long  and  i-celled;  skleren- 
chyma  (mechanical  cells). 
68.  Salvia. — Non-secreting  hairs;  1-4-celled  and  jointed;  also 
two  kinds  of  non-secretion  hairs  ;  stomata,  each  with  two  "  Neben- 
zellen." 
69.  Scoparius. — Non-secreting  hairs  ;  pollen  grains  are  cubical  and 
may  be  mistaken  for  crystals ;  sklerenchyma  with  brown  contents 
in  lumen. 
70.  Scutellaria. — Non-secreting  hairs  long,  jointed  (5  cells) ; 
two  kinds  of  secretion  hairs ;  sklerenchyma  characteristic  and 
prominent. 
71.  Senna. — See  No,  21. 
72.  Stramonii  Folia. — See  No.  22. 
73.  Strophantus. — Long  secretion  hairs,  in  diameter  10-15  ju; 
starch  grains,  4  ju ;  parenchyma  containing  oil,  aleuron  and  starch  ; 
narrow,  almost  colorless  collapsed  cells ;  Strophanthin  reaction. 
74.  Tanacetum. — Characteristic,  bent,  non-secreting  hairs,  made 
up  of  4-5  cells;  pollen  grains  15  p. ;  odor  characteristic. 
(p)  CONTAINING  SECRETION  HAIRS  OR  RESERVOIRS  J  AROMATIC  AND 
OF  CHARACTERISTIC  ODOR. 
a.    With  oil-secreting  hairs. 
75.  Absinthium. — See  No.  48. 
76.  Arnicce  Flores. — Characteristic  5-6-celled,  jointed,  non-secret- 
ing hairs  of  corolla  ;  also  double  hairs  on  outside  of  ovary  ;  pappus ; 
pollen  grains;  sklerenchyma. 
77.  Belladonna  Folia. — See  No.  46. 
77a.  Digitalis. — See  No.  5  3. 
78.  Eriodictyon. — See  No.  14. 
79.  Eupatorium. — See  No.  55. 
80.  Grindelia. — Pollen  grains,  20  fi ;  large  number  of  palisade 
cells  ;  sklerenchyma  cells  and  fibres. 
