﻿486 
  Mutations 
  

  

  cies 
  could 
  be 
  quoted 
  as 
  proof. 
  The 
  family 
  of 
  the 
  

   labiates 
  seems 
  to 
  be 
  essentially 
  rich 
  in 
  terminal 
  

   pelories, 
  as 
  for 
  instance 
  in 
  the 
  wild 
  sage 
  or 
  

   Salvia 
  and 
  the 
  dead-nettle 
  or 
  Lamium. 
  Here 
  

   the 
  pelories 
  have 
  long 
  and 
  straight 
  corolla- 
  

   tubes, 
  which 
  are 
  terminated 
  by 
  a 
  whorl 
  of 
  four 
  

   or 
  five 
  segments. 
  Such 
  forms 
  often 
  occur 
  in 
  

   the 
  wild 
  state 
  and 
  seem 
  to 
  have 
  a 
  geographic 
  

   distribution 
  as 
  narrowly 
  circumscribed 
  as 
  in 
  

   the 
  case 
  of 
  many 
  small 
  species. 
  Those 
  of 
  the 
  

   labiates 
  chiefly 
  belong 
  to 
  southern 
  Europe 
  and 
  

   are 
  unknown 
  at 
  least 
  in 
  some 
  parts 
  of 
  the 
  other 
  

   countries. 
  On 
  the 
  contrary 
  terminal 
  pelories 
  

   of 
  Scrophularia 
  nodosa 
  are 
  met 
  with 
  from 
  time 
  

   to 
  time 
  in 
  Holland. 
  Such 
  facts 
  clearly 
  point 
  

   to 
  a 
  common 
  origin, 
  and 
  as 
  only 
  the 
  terminal 
  

   flowers 
  are 
  affected 
  by 
  the 
  malformation, 
  the 
  

   fertility 
  of 
  the 
  whole 
  plant 
  is 
  evidently 
  not 
  seri- 
  

   ously 
  infringed 
  upon. 
  

  

  Before 
  leaving 
  the 
  labiates, 
  we 
  may 
  cite 
  

   a 
  curious 
  instance 
  of 
  pelorism 
  in 
  the 
  toad-flax, 
  

   which 
  is 
  quite 
  different 
  from 
  the 
  ordinary 
  

   peloric 
  variety. 
  This 
  latter 
  may 
  be 
  considered 
  

   from 
  a 
  morphologic 
  standpoint 
  to 
  be 
  owing 
  to 
  

   a 
  five-fold 
  repetition 
  of 
  the 
  middle 
  part 
  of 
  the 
  

   underlip. 
  This 
  conception 
  would 
  at 
  once 
  ex- 
  

   plain 
  the 
  occurrence 
  of 
  five 
  spurs 
  and 
  of 
  the 
  

   orange 
  border 
  all 
  around 
  the 
  corolla-tube. 
  We 
  

   might 
  readily 
  imagine 
  that 
  any 
  other 
  of 
  the 
  five 
  

  

  