﻿Mutations 
  in 
  Horticulture 
  607 
  

  

  the 
  new 
  one 
  of 
  the 
  variety 
  and 
  the 
  correspond- 
  

   ing 
  character 
  of 
  the 
  original 
  species. 
  

  

  In 
  such 
  cases 
  isolation 
  is 
  usually 
  accompanied 
  

   by 
  selection: 
  rarely 
  has 
  the 
  first 
  of 
  a 
  double, 
  

   striped 
  or 
  variegated 
  race 
  well 
  filled 
  or 
  richly 
  

   striped 
  flowers 
  or 
  highly 
  spotted 
  leaves. 
  

   Usually 
  minor 
  degrees 
  of 
  the 
  anomaly 
  are 
  seen 
  

   first, 
  and 
  the 
  breeder 
  expects 
  the 
  novelty 
  to 
  de- 
  

   velop 
  its 
  features 
  more 
  completely 
  and 
  more 
  

   beautifully 
  in 
  subsequent 
  generations. 
  Some 
  

   varieties 
  need 
  selection 
  only 
  in 
  the 
  beginning, 
  

   in 
  others 
  the 
  most 
  perfect 
  specimens 
  must 
  

   be 
  chosen 
  every 
  year 
  as 
  seed-bearers. 
  For 
  

   striped 
  flowers, 
  it 
  has 
  been 
  prescribed 
  by 
  Vil- 
  

   morin, 
  that 
  seeds 
  should 
  be 
  taken 
  only 
  from 
  

   those 
  with 
  the 
  smallest 
  stripes, 
  because 
  there 
  is 
  

   always 
  reversion. 
  Mixed 
  seed 
  or 
  seed 
  from 
  

   medium 
  types 
  would 
  soon 
  yield 
  plants 
  with 
  too 
  

   broad 
  stripes, 
  and 
  therefore 
  less 
  diversified 
  

   flowers. 
  

  

  In 
  horticulture, 
  new 
  varieties, 
  both 
  retrograde 
  

   and 
  ever-sporting, 
  are 
  known 
  to 
  occur 
  almost 
  

   yearly. 
  Nevertheless, 
  not 
  every 
  novelty 
  of 
  the 
  

   gardener 
  is 
  to 
  be 
  considered 
  as 
  a 
  mutation 
  in 
  

   the 
  scientific 
  sense 
  of 
  the 
  word. 
  First 
  of 
  all, 
  

   the 
  novelties 
  of 
  perennial 
  and 
  woody 
  species 
  are 
  

   to 
  be 
  excluded. 
  Any 
  extreme 
  case 
  of 
  fluctuat- 
  

   ing 
  variability 
  may 
  be 
  preserved 
  and 
  multiplied 
  

   in 
  the 
  vegetative 
  way. 
  Such 
  types 
  are 
  desig- 
  

  

  