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  Bergman: 
  Internal 
  stomata 
  in 
  ericaceous 
  fruits 
  

  

  It 
  is 
  of 
  interest 
  to 
  note 
  that 
  In 
  several 
  instances 
  in 
  the 
  examina- 
  

   tion 
  of 
  fungus-infested 
  berries 
  hyphae 
  have 
  been 
  found 
  entering 
  

   the 
  seed-cavity 
  through 
  the 
  stomata 
  of 
  the 
  endocarp 
  (Fig. 
  9). 
  

   This 
  apparently 
  was 
  not 
  accidental 
  as 
  it 
  was 
  observed 
  in 
  several 
  

   Instances 
  and 
  in 
  no 
  case 
  were 
  hyphae 
  found 
  which 
  had 
  penetrated 
  

  

  the 
  cell 
  wall. 
  , 
  ^^ 
  

  

  In 
  conclusion 
  a 
  statement 
  may 
  be 
  made 
  with 
  reference 
  to 
  

   gaseous 
  interchange. 
  It 
  has 
  been 
  found 
  that 
  a 
  rapid 
  interchange 
  

   of 
  gas 
  occurs 
  in 
  the 
  respiration 
  of 
  cranberries 
  and 
  blueberries. 
  

   These 
  fruits 
  have 
  a 
  thick 
  epidermis 
  in 
  which 
  stomata 
  or 
  lenticels 
  

   are 
  entirely 
  lacking. 
  The 
  epidermis 
  of 
  the 
  cranberry 
  is 
  provided 
  

   with 
  a 
  layer 
  of 
  cuticle. 
  That 
  of 
  the 
  blueberry 
  is 
  cuticularized, 
  

   although 
  less 
  so 
  than 
  in 
  the 
  cranberry. 
  Whether 
  or 
  not 
  the 
  rate 
  

   of 
  respiration 
  in 
  fruits 
  can 
  be 
  correlated 
  with 
  the 
  thickness 
  of 
  the 
  

   epidermis 
  or 
  with 
  the 
  cuticularized 
  layer 
  in 
  the 
  epidermis 
  and 
  

   whether 
  a 
  difference 
  can 
  be 
  shown 
  to 
  exist 
  in 
  the 
  rate 
  of 
  respiration 
  

   of 
  fruits 
  with 
  and 
  without 
  stomata 
  are 
  questions 
  for 
  further 
  study. 
  

   As 
  stomata 
  are 
  lacking 
  in 
  many 
  fleshy 
  fruits 
  most 
  of 
  which 
  are 
  

   provided 
  with 
  cuticularized 
  epidermis, 
  we 
  have 
  in 
  such 
  fruits 
  

   excellent 
  examples 
  of 
  gas 
  interchange 
  through 
  cuticularized 
  

   surfaces. 
  

  

  U. 
  S. 
  Department 
  of 
  Agriculture, 
  

   Bureau 
  of 
  Plant 
  Industry 
  

  

  Literature 
  cited 
  

  

  1. 
  Czech, 
  A. 
  Untersuchungen 
  iiber 
  die 
  Zahlverhaltnisse 
  und 
  die 
  

  

  Verbreitung 
  der 
  Stomata. 
  Bot. 
  Zeit. 
  23: 
  101-107. 
  1865. 
  

  

  2. 
  Hohnfeldt, 
  R, 
  Uber 
  das 
  Vorkommen 
  und 
  die 
  Vertheilung 
  der 
  

  

  Spaltoffnungen 
  auf 
  unterirdischen 
  Pflanzenthellen. 
  Inaug. 
  

   Diss. 
  Konigsberg. 
  Abstract 
  in 
  Just's 
  Botati. 
  Jahresb. 
  8: 
  48. 
  

  

  1880. 
  

  

  3. 
  Porsch, 
  O. 
  Der 
  Spaltoffnungsapparat 
  im 
  Lichte 
  der 
  Phylo- 
  

  

  genie. 
  Jena. 
  1905. 
  

  

  4. 
  . 
  Zur 
  Kenntniss 
  des 
  Spaltoffnungsapparatessubmersen 
  Pflan- 
  

  

  zen 
  telle. 
  Sitzungsb. 
  Kais. 
  Akad. 
  Wissen. 
  Wien. 
  112: 
  97. 
  

   1903. 
  

  

  V 
  

  

  5. 
  Rudlophi, 
  KA. 
  Anatomie 
  der 
  Pflanzen. 
  Berlin. 
  1807. 
  

  

  6; 
  Schenk, 
  H. 
  Vergleichende 
  Anatomie 
  der 
  submersen 
  Gewachse, 
  

  

  Bibl. 
  Bot, 
  i: 
  1-67. 
  pL 
  i-io. 
  1886. 
  

   7. 
  Solereder, 
  Hans« 
  Systematic 
  Anatomy 
  of 
  the 
  Dicotyledons. 
  

  

  English 
  translation, 
  i. 
  Oxford, 
  1908, 
  

  

  