42  The  Apocynacecz  in  Materia  Medica.    { ^nuary Fxstlm" 
toward  the  internal  region.  The  second  seminal  zone  is  strongly 
compressed  especially  on  the  inside  and  the  first  layer  of  the  albu- 
men is  strongly  thickened  on  the  outside.  The  cells  of  the  embryo 
are  often  not  distinct  in  outline  ;  they  are  rich  in  oil. 
With  concentrated  sulphuric  acid  the  coloration  is  effected  slowly 
and  is  never  green.  At  first  yellow,  then  becomes  a  bright  rose. 
The  rose  appearing  in  the  neighborhood  of  the  vascular  fascicles, 
and  remaining  more  deeply  so  there.  Finally,  very  slowly,  a  violet 
color  is  produced. 
STROPHANTHUS  DIVARICATUS. 
5.  divaricatus  Hook,  et  Arn.,  Pergularia  divaricata  Lour.;  5V 
divergens  Grah.;  S.  dichotomus  (3  Chinensis  Ker.  This  species  oc- 
cupies the  sea  coast  of  China.  The  carpels  are  strongly  divergent 
and  make  with  each  other  an  obtuse  angle.  The  follicle  is  rela- 
tively small,  13-14  cm.  in  length  and  nearly  4  cm.  in  diameter ; 
the  fruit  is  quite  slender  and  the  base  strongly  notched  about  the 
insertion  of  the  peduncle.  Externally  it  is  blackish  brown,  strongly 
striated  longitudinally,  and  here  and  there  a  little  yellowish  or  red- 
dish in  places.  The  interior  is  smooth,  greenish  yellow  and  generally 
dull.  The  seed  is  15-17  mm.  in  length  by  3-3^  mm.  in  dia- 
meter and  in  thickness,  with  margins  a  little  undulate. 
Color  a  blackish  grey  to  deep  brown.  The  ventral  face  bears 
a  longitudinal  line,  brighter  in  color,  and  running  nearly  the 
entire  length.  The  naked  part  of  the  shaft  or  awn  is  very  short, 
4-6  mm.,  the  plume  is  much  longer,  2-3  cm.,  and  brighter  in 
color. 
The  hairs  of  the  awn  are  white,  in  mass  grayish,  quite  long,  3^ 
to  4  cm.,  and  relatively  less  fragile  and  more  rigid  than  in  the  other 
strophanthus.  They  are  directed  forward  here  horizontally,  then 
little  by  little  they  return  to  the  rear,  passing  even  beyond  the 
body  of  the  seed.  The  attitude  is  inverse  to  those  of  the  S. 
Kombc.  The  taste  is  much  less  bitter  than  that  of  S.  glaber. 
With  concentrated  sulphuric  acid  the  albumen  and  the  embryo 
give  a  red,  orange  coloration. 
Strophanthus  Caudatus,  Kurz.,  5.  dicliotomus.  A. — P.  DC.  This 
species  occurs  in  Java,  India,  Tonquin,  Singapore,  the  Malay  penin- 
sula, and  is  cultivated  at  Reunion. 
The  variety,  Marckii,  inhabits  India  and  Malacca,  and,  according 
