﻿672 
  Mutations 
  

  

  Sarracenia 
  and 
  some 
  others 
  are 
  very 
  well 
  

   known 
  and 
  perhaps 
  even 
  the 
  bladderworts 
  or 
  

   Utricularia 
  might 
  be 
  included 
  here. 
  

  

  The 
  reproduction 
  of 
  specific 
  characters 
  by 
  

   anomalous 
  ascidia 
  is 
  not 
  at 
  all 
  limited 
  to 
  the 
  

   general 
  case 
  as 
  described 
  above. 
  More 
  minute 
  

   details 
  may 
  be 
  seen 
  to 
  be 
  duplicated 
  in 
  the 
  same 
  

   way. 
  Proofs 
  are 
  afforded 
  on 
  one 
  side 
  by 
  in- 
  

   complete 
  ascidia, 
  and 
  on 
  the 
  other 
  by 
  the 
  double 
  

   cups. 
  

  

  Incomplete 
  ascidia 
  are 
  those 
  of 
  the 
  Nepenthes. 
  

   The 
  leaf 
  is 
  divided 
  into 
  three 
  parts, 
  a 
  blade, 
  a 
  

   tendril 
  and 
  the 
  pitcher. 
  Or 
  in 
  other 
  words, 
  the 
  

   limb 
  produces 
  a 
  tendril 
  at 
  its 
  summit, 
  by 
  means 
  

   of 
  which 
  the 
  plant 
  is 
  enabled 
  to 
  fasten 
  itself 
  to 
  

   surrounding 
  shrubs 
  and 
  to 
  climb 
  between 
  their 
  

   branches. 
  But 
  the 
  end 
  of 
  this 
  tendril 
  bears 
  a 
  

   well-formed 
  urn, 
  which 
  however, 
  is 
  produced 
  

   only 
  after 
  the 
  revolving 
  and 
  grasping 
  move- 
  

   ments 
  of 
  the 
  tendril 
  have 
  been 
  made. 
  Some 
  

   species 
  have 
  more 
  rounded 
  and 
  some 
  more 
  

   elongated 
  ascidia 
  and 
  often 
  the 
  shape 
  is 
  seen 
  to 
  

   change 
  with 
  the 
  development 
  of 
  the 
  stem. 
  The 
  

   mouth 
  of 
  the 
  urn 
  is 
  strengthened 
  by 
  a 
  thick 
  rim 
  

   and 
  covered 
  with 
  a 
  lid. 
  Numerous 
  curious 
  con- 
  

   trivances 
  in 
  these 
  structures 
  to 
  catch 
  ants 
  and 
  

   other 
  insects 
  have 
  been 
  described, 
  but 
  as 
  they 
  

   have 
  no 
  relation 
  to 
  our 
  present 
  discussion, 
  we 
  

   shall 
  abstain 
  from 
  dealing 
  with 
  them. 
  

  

  