﻿146 
  Retrograde 
  Varieties 
  

  

  some 
  woods 
  a 
  variety 
  with 
  greenish 
  flowers 
  and 
  

   bright 
  yellow 
  berries 
  occurs, 
  which 
  is 
  also 
  fre- 
  

   quently 
  seen 
  in 
  botanic 
  gardens. 
  The 
  anthocyan 
  

   dye 
  is 
  lacking 
  in 
  both 
  organs, 
  and 
  the 
  same 
  is 
  

   the 
  case 
  with 
  the 
  stems 
  and 
  the 
  leaves. 
  The 
  

   lady's 
  laurel 
  or 
  Daphne 
  Mezereum 
  has 
  red 
  co- 
  

   rollas, 
  purple 
  leaves 
  and 
  red 
  fruits; 
  its 
  white- 
  

   flowered 
  variety 
  may 
  be 
  distinguished 
  by 
  lack 
  of 
  

   the 
  red 
  hue 
  in 
  the 
  stems 
  and 
  leaves, 
  and 
  by 
  their 
  

   beautiful 
  yellow 
  berries. 
  Many 
  other 
  instances 
  

   could 
  be 
  given, 
  since 
  the 
  loss 
  of 
  color 
  in 
  berries 
  

   is 
  a 
  very 
  common 
  occurrence, 
  so 
  common 
  that 
  

   for 
  instance, 
  in 
  the 
  heath-family 
  or 
  Ericaceae, 
  

   with 
  only 
  a 
  few 
  exceptions, 
  all 
  berry-bearing 
  

   species 
  have 
  white-fruited 
  varieties. 
  

  

  The 
  same 
  correlation 
  is 
  observed 
  in 
  the 
  seeds. 
  

   The 
  white-flowered 
  flax 
  may 
  be 
  seen 
  to 
  yield 
  

   yellow 
  and 
  not 
  brown 
  seeds 
  as 
  in 
  the 
  blue 
  spe- 
  

   cies. 
  Many 
  varieties 
  of 
  flowers 
  may 
  be 
  recog- 
  

   nized 
  by 
  the 
  color 
  of 
  their 
  seeds, 
  as 
  in 
  the 
  pop- 
  

   pies, 
  stocks 
  and 
  others. 
  Other 
  white-flowered 
  

   varieties 
  may 
  be 
  distinguished 
  when 
  germinat- 
  

   ing, 
  their 
  young 
  axes 
  being 
  of 
  a 
  pure 
  instead 
  of 
  

   a 
  purplish 
  green. 
  It 
  is 
  a 
  test 
  ordinarily 
  used 
  

   by 
  gardeners, 
  to 
  purify 
  their 
  flower 
  beds 
  long 
  

   before 
  the 
  blooming 
  time, 
  when 
  thinning 
  or 
  

   weeding 
  them. 
  Even 
  in 
  wild 
  plants, 
  as 
  - 
  in 
  

   Erodium, 
  Calluna, 
  Brunella 
  and 
  others, 
  a 
  bot- 
  

   anist 
  may 
  recognize 
  the 
  rare 
  white-flowered 
  

  

  