﻿534 
  Mutations 
  

  

  spects. 
  The 
  stems 
  are 
  robust, 
  often 
  with 
  twice 
  

   the 
  diameter 
  of 
  lamarckiana 
  throughout. 
  The 
  

   internodes 
  are 
  shorter, 
  and 
  the 
  leaves 
  more 
  

   numerous, 
  covering 
  the 
  stems 
  with 
  a 
  denser 
  

   foliage. 
  This 
  shortness 
  of 
  the 
  internodes 
  ex- 
  

   tends 
  itself 
  to 
  the 
  spike, 
  and 
  for 
  this 
  reason 
  the 
  

   flowers 
  and 
  fruits 
  grow 
  closer 
  together 
  than 
  on 
  

   the 
  parent-plant. 
  Hence 
  the 
  crown 
  of 
  bright 
  

   flowers, 
  opening 
  each 
  evening, 
  is 
  more 
  dense 
  

   and 
  more 
  strikingly 
  brilliant, 
  so 
  much 
  the 
  more 
  

   so 
  as 
  the 
  individual 
  flowers 
  are 
  markedly 
  larger 
  

   than 
  those 
  of 
  the 
  parents. 
  In 
  connection 
  with 
  

   these 
  characters, 
  the 
  flower-buds 
  are 
  seen 
  to 
  be 
  

   much 
  stouter 
  than 
  those 
  of 
  lamarckiana. 
  The 
  

   fruits 
  attain 
  only 
  half 
  the 
  normal 
  size, 
  but 
  are 
  

   broader 
  and 
  contain 
  fewer, 
  but 
  larger 
  seeds. 
  

  

  The 
  rubrinervis 
  is 
  in 
  many 
  respects 
  a 
  coun- 
  

   terpart 
  to 
  the 
  gigas, 
  but 
  its 
  stature 
  is 
  more 
  

   slender. 
  The 
  spikes 
  and 
  flowers 
  are 
  those 
  of 
  

   the 
  lamarckiana, 
  but 
  the 
  bracts 
  are 
  narrower. 
  

   Bed 
  veins 
  and 
  red 
  streaks 
  on 
  the 
  fruits 
  afford 
  

   a 
  striking 
  differentiating 
  mark, 
  though 
  they 
  are 
  

   not 
  absolutely 
  lacking 
  in 
  the 
  parent-species. 
  

   A 
  red 
  hue 
  may 
  be 
  seen 
  on 
  the 
  calyx, 
  and 
  even 
  

   the 
  yellow 
  color 
  of 
  the 
  petals 
  is 
  somewhat 
  deep- 
  

   ened 
  in 
  the 
  same 
  way. 
  Young 
  plants 
  are 
  often 
  

   marked 
  by 
  the 
  pale 
  red 
  tinge 
  of 
  the 
  mid-veins, 
  

   but 
  in 
  adult 
  rosettes, 
  or 
  from 
  lack 
  of 
  sunshine, 
  

   this 
  hue 
  is 
  often 
  very 
  faint. 
  

  

  