﻿FOODS 
  IN 
  PLANTS 
  

  

  53 
  

  

  the 
  trees 
  to 
  enable 
  them 
  to 
  thrive. 
  The 
  European 
  mistletoe 
  

   causes 
  much 
  damage 
  to 
  apple 
  trees 
  in 
  northern 
  France 
  and 
  in 
  

  

  the 
  Tirol. 
  

  

  54. 
  Carnivorous 
  plants. 
  

   There 
  are 
  many 
  kinds 
  of 
  

   plants 
  (probably 
  more 
  than 
  

   four 
  hundred 
  species) 
  which 
  

   capture 
  insects 
  and 
  other 
  

   small 
  animals. 
  In 
  some 
  

   cases 
  at 
  least 
  they 
  may 
  

   digest 
  the 
  captured 
  animals 
  

   as 
  a 
  part 
  of 
  their 
  food 
  sup- 
  

   ply. 
  Some 
  of 
  these 
  plants 
  

   entrap 
  their 
  prey 
  by 
  means 
  

   of 
  hollow 
  leaves, 
  some 
  by 
  

   means 
  of 
  sticky 
  secretions, 
  

   and 
  some 
  by 
  means 
  of 
  

   quickly 
  closing, 
  trap-like 
  

   leaves. 
  The 
  best 
  type 
  of 
  

   carnivorous 
  plant 
  is 
  the 
  

   sundew 
  (fig. 
  36). 
  This 
  is 
  

   a 
  low 
  marsh 
  

   plant 
  having 
  

   hairy 
  leaves 
  

   and 
  a 
  slender 
  

   flower 
  stalk, 
  

   on 
  which 
  are 
  

   borne 
  small 
  

   white 
  flowers. 
  

   In 
  one 
  widely 
  

   distributed 
  spe- 
  

   cies 
  the 
  leaf 
  

   consists 
  of 
  a 
  

  

  narrow 
  blade 
  tapering 
  into 
  a 
  moderately 
  long 
  leafstalk. 
  On 
  

   the 
  inner 
  surface 
  and 
  around 
  the 
  margin 
  of 
  the 
  blade 
  are 
  

   borne 
  a 
  number 
  of 
  short 
  bristles, 
  each 
  terminating 
  in 
  a 
  knob 
  

  

  Sr*:-v;.-.v.iV* 
  i 
  *"s; 
  

  

  %Fr'' 
  ; 
  'w 
  i 
  '"'" 
  : 
  

  

  ^^^^^^^^^^, 
  i 
  

  

  *s 
  I 
  V. 
  ' 
  v/n/f"."^iti^3' 
  >*/<ir 
  'j.-tVi^5 
  - 
  "",.'.&:", 
  < 
  

  

  FIG. 
  36. 
  The 
  sundew, 
  a 
  carnivorous 
  plant 
  

  

  