468 
Subsp.  III.  D.  leptophylla  Fouc.  &  Rouy.  E.  lepto- 
phylla  Jord.  Scapes  slender.  Leaves  lanceolate  or 
linear-lanceolate,  with  short  pubescence.  Hairs  mostly 
bifid,  some  simple.  Petals  distinctly  exceeding  calyx. 
Silicules  of  medium  size  (5  — 7mm.  long),  oblong ; 
seeds  16 — 24. 
Subsp.  IY.  D.  vulgaris  Rouy  &  Fouc.  E.  vulgaris 
DC.  Scapes  slender.  Leaves  ovate  or  ovate-lanceo¬ 
late,  with  2-  or  3-fid  hairs,  short.  Silicules  elliptic- 
oblong  or  oblong-sublanceolate,  of  medium  size 
(5 — 6mm.  long);  seeds  16 — 24. 
Subsp.  Y»  D.  spathulata  Hoppe.  E.  obovata  Jord. 
Scapes  slender,  few  (1—3).  Leaves  broadly  lanceolate 
or  nearly  ovate.  Hairs  mostly  bifid,  some  simple 
or  trifid.  Petals  small,  scarcely  exceeding  calyx. 
Silicules  broadly  obovate  or  elliptic-lanceolate,  nar¬ 
rowed  at  base,  rounded  or  subattenuate  above,  of 
medium  size,  but  mostly  small  (4 — 7mm.  long)  •  seeds 
16—24.  ’ 
Subsp.  YI.  D.  praecox  Stev.  E.  preecox  DC.  Scapes 
slender.  Leaves  ovate  or  broadly  lanceolate.  Hairs 
mostly  bifid,  some  simple.  Silicules  suborbicular  or 
broadly  ovate,  much  rounded  at  base  and  above, 
generally  small;  seeds  16 — 24. 
Series  II.  SIMPLICES  Nob.  Hairs  all  or  nearly 
all  simple,  rarely  with  bifid  hairs  intermixed. 
Subsp.  YII.  D.  glabrescens  Rouy  &  Fouc.  E.  glab- 
rescens  Jord.  Scapes  slender,  short  (6— 10cm.). 
Leaves  more  or  less  narrow,  lanceolate,  oblong  or 
ovate-lanceolate,  with  spreading  lamina  often  recurved 
at  tip.  Silicules  elliptic  or  ovate-oblong,  of  medium 
size  ;  seeds  20 — 24. 
Subsp.  YIII.  D.  hirtella  Fouc.  &  Rouy.  E.  hirtella 
Jord.  Scapes  slender.  Leaves  lanceolate  or  ovate- 
lanceolate,  nearly  erect.  Flowers  large.  Silicules 
elliptic-oblong  or  obovate,  attenuate  at  the  base,  of 
medium  size;  seeds  20 — 24. 
