﻿New 
  Species 
  of 
  Oenothera 
  521 
  

  

  first 
  summer. 
  It 
  would 
  be 
  of 
  no 
  special 
  use 
  to 
  

   enumerate 
  them. 
  The 
  negative 
  result 
  does 
  not 
  

   apply 
  to 
  the 
  species 
  as 
  such, 
  but 
  only 
  to 
  the 
  in- 
  

   dividual 
  strain, 
  which 
  I 
  collected 
  and 
  cultivated. 
  

   Many 
  species, 
  which 
  are 
  quite 
  constant 
  with 
  us, 
  

   may 
  be 
  expected 
  to 
  be 
  mutable 
  in 
  other 
  parts 
  

   of 
  their 
  range. 
  

  

  Only 
  one 
  of 
  all 
  my 
  tests 
  met 
  my 
  expectations. 
  

   This 
  species 
  proved 
  to 
  be 
  in 
  a 
  state 
  of 
  mutation, 
  

   producing 
  new 
  elementary 
  forms 
  continually, 
  

   and 
  it 
  soon 
  became 
  the 
  chief 
  member 
  of 
  my 
  ex- 
  

   perimental 
  garden. 
  It 
  was 
  one 
  of 
  the 
  evening- 
  

   primroses. 
  

  

  Several 
  evening-primroses 
  have 
  at 
  different 
  

   times 
  been 
  introduced 
  into 
  European 
  gardens 
  

   from 
  America. 
  From 
  thence 
  they 
  have 
  spread 
  

   into 
  the 
  vicinity, 
  becoming 
  common 
  and 
  exhibit- 
  

   ing 
  the 
  behavior 
  of 
  indigenous 
  types. 
  Oenoth- 
  

   era 
  biennis 
  was 
  introduced 
  about 
  1614 
  from 
  

   Virginia, 
  or 
  nearly 
  three 
  centuries 
  ago. 
  0. 
  

   muricata, 
  with 
  small 
  corollas 
  and 
  narrow 
  

   leaves, 
  was 
  introduced 
  in 
  the 
  year 
  1789 
  by 
  

   John 
  Hunneman, 
  and 
  0. 
  suaveolens, 
  or 
  sweet- 
  

   scented 
  primrose, 
  a 
  form 
  very 
  similar 
  to 
  the 
  

   'biennis, 
  about 
  the 
  same 
  time, 
  in 
  1778, 
  by 
  

   John 
  Fothergill. 
  This 
  form 
  is 
  met 
  with 
  in 
  dif- 
  

   ferent 
  parts 
  of 
  France, 
  while 
  the 
  biennis 
  and 
  

   muricata 
  are 
  very 
  common 
  in 
  the 
  sandy 
  regions 
  

   of 
  Holland, 
  where 
  I 
  have 
  observed 
  them 
  for 
  

  

  