﻿l8gO.\ 
  BOTANICAL 
  GAZETTE. 
  

  

  33^ 
  

  

  while 
  ^others 
  in 
  this 
  stronger 
  light 
  retain 
  their 
  pure 
  white 
  

   color."" 
  And 
  in 
  a 
  foot 
  note 
  in 
  this 
  connection 
  he 
  cites 
  

   Hoffman 
  as 
  authoritj' 
  for 
  a 
  change 
  of 
  color 
  in 
  the 
  flowers 
  of 
  

   valerian 
  (Baldrien 
  in 
  German) 
  from 
  flesh 
  color 
  in 
  Germany 
  

   to 
  dark-red 
  in 
  Norwa}^. 
  

  

  It 
  seems 
  yer}^ 
  probable, 
  therefore, 
  notwithstanding 
  this 
  

   diversity 
  of 
  views, 
  that 
  bright 
  skies 
  and 
  a 
  continued 
  strong 
  

   illumination, 
  whether 
  regional 
  or 
  seasonal, 
  may 
  have 
  the 
  influ- 
  

   ence 
  which 
  was 
  marked 
  enough 
  to 
  be 
  observed 
  in 
  Minnesota, 
  

   a 
  conclusion 
  reached 
  before 
  making 
  special 
  inquirv 
  to 
  see 
  if 
  

   It 
  accorded 
  with 
  facts 
  observed 
  by 
  others. 
  And 
  'while 
  the 
  

   inquiry 
  has 
  not 
  in 
  ever^^ 
  way 
  proved 
  satisfictory, 
  there 
  yet 
  

   IS 
  left 
  a 
  strong 
  residuum 
  of 
  "belief 
  that 
  the 
  cause 
  originally 
  

   assigned 
  is 
  not 
  without 
  a 
  basis 
  for 
  its 
  support. 
  So, 
  in 
  the 
  

   experiments 
  it 
  was 
  seen 
  that 
  the 
  yellow 
  colors 
  were 
  but 
  little 
  

   affected 
  by 
  varied 
  conditions 
  of 
  light, 
  as 
  was 
  the 
  case 
  in 
  the 
  

   flowers 
  of 
  the 
  Minnesota 
  plants. 
  The 
  subject 
  offers 
  an 
  inviting 
  

   field 
  of 
  inquiry 
  to 
  those 
  who 
  mav 
  be 
  located 
  so 
  as 
  to 
  observe 
  

   fli.e 
  plants 
  of 
  the 
  northwest 
  in 
  "this 
  respect 
  for 
  a 
  sufficient 
  

   time, 
  and 
  thus 
  reach 
  a 
  more 
  trustworthy 
  conclusion 
  based 
  on 
  

   a 
  longer 
  series 
  of 
  observations.' 
  

  

  Englewood 
  P. 
  O., 
  Chicago, 
  III. 
  

  

  Notes 
  on 
  some 
  phanerogams 
  of 
  Central 
  Minnesota. 
  

  

  cox 
  WAY 
  :macmillan. 
  

  

  The 
  following 
  is 
  a 
  partial 
  record 
  of 
  observations 
  made 
  

   dunng 
  August, 
  1800, 
  by 
  the 
  writer, 
  who, 
  in 
  company 
  with 
  

  

  University 
  of 
  M 
  

  

  Winir 
  Co., 
  M 
  

  

  ^rase7na 
  feltata 
  Pursh.— 
  This 
  plant 
  is 
  occasionally 
  lound 
  

  

  M 
  

  

  ^ntjy 
  in 
  Irving 
  Chase 
  lake, 
  twelve 
  miles 
  west 
  of 
  Gull 
  lake, 
  

   ^"?' 
  jn 
  a 
  dozen 
  other 
  small 
  forest 
  lakes 
  of 
  the 
  immediate 
  

   neighborhood, 
  is 
  the 
  most 
  prominent 
  plant. 
  Apparently 
  it 
  

   excludes 
  from 
  these 
  waters 
  the 
  white 
  water 
  lily 
  (Nymphaea 
  

   °°oi-ata) 
  and 
  tends 
  to 
  drive 
  out 
  the 
  common 
  pond 
  lily 
  

   iNuphar 
  ad 
  vena). 
  

  

  " 
  1- 
  C. 
  p. 
  50. 
  

  

  