﻿New 
  Species 
  of 
  Oenothera 
  539 
  

  

  becomes 
  densely 
  branched, 
  bearing 
  flowers 
  on 
  

   quite 
  a 
  number 
  of 
  racemes 
  and 
  yielding 
  a 
  full 
  

   harvest 
  of 
  seeds. 
  But 
  it 
  always 
  remains 
  a 
  small 
  

   plant, 
  reaching 
  about 
  half 
  the 
  height 
  of 
  that 
  of 
  

   lamarckiana. 
  

  

  When 
  very 
  young 
  it 
  has 
  broader 
  leaves, 
  but 
  

   in 
  the 
  adult 
  rosettes 
  the 
  leaves 
  become 
  very 
  nar- 
  

   row, 
  but 
  fleshy 
  and 
  of 
  a 
  bright 
  green 
  color. 
  

   They 
  are 
  so 
  crowded 
  as 
  to 
  leave 
  no 
  space 
  be- 
  

   tween 
  them 
  unoccupied. 
  The 
  flowering 
  spikes 
  

   of 
  the 
  second 
  year 
  bear 
  long 
  leaf-like 
  bracts 
  

   under 
  the 
  first 
  few 
  flowers, 
  but 
  those 
  arising 
  

   later 
  are 
  much 
  shorter. 
  Numerous 
  little 
  cap- 
  

   sules 
  cover 
  the 
  axis 
  of 
  the 
  spike 
  after 
  the 
  fading 
  

   away 
  of 
  the 
  petals, 
  constituting 
  a 
  very 
  striking 
  

   differentiating 
  mark. 
  This 
  species 
  also 
  was 
  

   found 
  to 
  be 
  quite 
  constant, 
  if 
  grown 
  from 
  pure 
  

   seed. 
  

  

  We 
  have 
  now 
  given 
  the 
  descriptions 
  of 
  seven 
  

   new 
  forms, 
  which 
  diverge 
  in 
  different 
  ways 
  from 
  

   the 
  parent-type. 
  All 
  were 
  absolutely 
  constant 
  

   from 
  seed. 
  Hundreds 
  or 
  thousands 
  of 
  seedlings 
  

   may 
  have 
  arisen, 
  but 
  they 
  always 
  come 
  true 
  

   and 
  never 
  revert 
  to 
  the 
  original 
  0. 
  lamarckiana 
  

   type. 
  From 
  this 
  they 
  have 
  inherited 
  the 
  condi- 
  

   tion 
  of 
  mutability, 
  either 
  completely 
  or 
  partly, 
  

   and 
  according 
  to 
  this 
  they 
  may 
  be 
  able 
  to 
  pro- 
  

   duce 
  new 
  forms 
  themselves. 
  But 
  this 
  occurs 
  

   only 
  rarely, 
  and 
  combinations 
  of 
  more 
  than 
  one 
  

  

  