6l2 
Powdered  Vegetable  Drugs. 
f Am.  Jour.  Pharin. 
\  December,  1898. 
crystals  (which  may  be  calcium  oxalate  crystals);  large  (5  x  1.5  u) 
prismatic  crystals  separate  in  glycerin  mounts  which  may  be  a 
sugar;  characteristic  "  Ersatzfasern  "  accompanying  the  sieve. 
VII-    CHARACTERISTIC  POLLEN  GRAINS- 
468.  Anthemis. — See  No.  372, 
469.  Amicce  Flores. — See  No.  373. 
470.  Carthamus. — Glycerin,  of  mount,  colored  yellow  ;  numerous 
elliptical,  prickly  pollen  grains,  which  are  more  or  less  elliptical 
(50  x  60  /jl)  ;  brick-red  secretion  vessels ;  cells  of  anther ;  hairs  of 
stigma  ;  chaff  or  pappus. 
471.  Caryophyllus. — See  No,  346. 
472.  Crocus. — Glycerin  of  mount  colored  deep  orange;  few  nearly 
smooth,  nearly  spherical  pollen  grains  (85-100  /i)  ;  papillae  of 
stigma ;  coloring  principle  soluble  in  water  and  not  in  fatty  oils, 
being  the  reverse  in  Capsicum;  with  H2S04  fragments  become  blue 
immediately. 
473.  Rosa  centifolia. — Pollen  grains  nearly  smooth  and  elliptical 
(17  x  30  /jl)  ;  fragments  of  corolla  pinkish  with  chloral ;  papillae  of 
corolla  are  somewhat  rounded;  cells  of  anther;  long,  1 -celled 
fibres  around  ovary  and  akenes  being  875  /jl  long  and  10  /jl  wide. 
In  Rosa  gallica  the  pollen  grains  are  ovate  (28  x  32  /jl)  rather  than 
elliptical ;  the  papillae  of  corolla  are  acute  rather  than  rounded  ; 
absence  of  many  anthers  or  fibres  of  ovary. 
474.  Sambucus. — No  starch  ;  numerous  smooth,  nearly  spherical 
pollen  grains  (18  x  18  /jl);  numerous  fragments  of  broken  or 
whole  anthers ;  corolla  with  dentate  papillae ;  oil  globules  from 
secretion  cells  ;  in  calyx  some  rosette-shaped  crystals  of  calcium 
oxalate  ;  in  flower  stalk  large  spiral  ducts  (30  /jl  wide),  and  paren- 
chyma with  brown  contents. 
475.  Santonica.    See  No.  350. 
VIII.   LITTLE  OR  NO  INDICATION  OF  PLANT  TISSUES. 
A.     CONTAINING  STARCH. 
476.  Amylum  Iodatum. — See  No,  335. 
477.  Bryonia. — See  No.  336. 
478.  Colchici  Cormis. — See  No.  337. 
479.  Ext.  Glycyrrhizce. — Irregular,  wine-colored  fragments ;  al- 
