﻿262 
  BOTANICAL 
  GAZETTE. 
  [ 
  October, 
  

  

  On 
  the 
  stractnre 
  and 
  development 
  of 
  the 
  lemon.' 
  

  

  L. 
  S. 
  ROSS. 
  

  

  (with 
  plate 
  XVI.) 
  

  

  _ 
  The 
  mature 
  lemon 
  has 
  its 
  own 
  characteristic 
  lemon 
  color; 
  

   it 
  is 
  oval 
  in 
  outline 
  and 
  varies 
  in 
  size. 
  The 
  rind 
  is 
  rough, 
  

   thick 
  and 
  leathery, 
  and 
  affords 
  much 
  protection 
  to 
  the 
  seeds 
  

   and 
  pulp 
  within. 
  By 
  looking 
  closely 
  at 
  the 
  rind, 
  small 
  dark 
  

   specks 
  maybe 
  seen 
  which 
  indicate 
  the 
  position 
  of 
  oil 
  glands. 
  

   If 
  a 
  piece 
  of 
  the 
  peel 
  be 
  bent 
  or 
  crushed 
  together 
  suddenly 
  

   near 
  a 
  flame, 
  the 
  oil 
  will 
  be 
  forced 
  out 
  in 
  minute 
  quantities 
  

   and 
  will 
  burn 
  with 
  a 
  beautiful 
  flame. 
  If 
  a 
  cross 
  section 
  of 
  

   the 
  lemon 
  be 
  made, 
  it 
  will 
  at 
  once 
  be 
  seen 
  that 
  narrow 
  white 
  

   bands 
  pass 
  from 
  the 
  rind 
  to 
  a 
  central 
  spongy 
  mass 
  forming 
  

   from 
  seven 
  or 
  eight 
  to 
  eleven 
  or 
  twelve 
  isosceles 
  triangles 
  

   whose 
  apices 
  are 
  toward 
  the 
  center 
  of 
  the 
  fruit. 
  The 
  white 
  

   bands 
  are 
  the 
  cut 
  edges 
  of 
  walls 
  extending 
  through 
  the 
  en- 
  

   tire 
  length 
  of 
  the 
  fruit 
  dividing 
  it 
  into 
  chambers 
  or 
  locuh 
  

   which 
  contain 
  the 
  seeds 
  and 
  pulp. 
  Near 
  the 
  bases 
  of 
  the 
  

   triangles 
  their 
  common 
  walls 
  divide, 
  one 
  division 
  going 
  to 
  

   form 
  the 
  base 
  of 
  one 
  triangle, 
  while 
  the 
  other 
  division 
  passes 
  

   in 
  an 
  opposite 
  direction 
  to 
  form 
  the 
  base 
  of 
  the 
  adjoining 
  tn- 
  

   angle. 
  When 
  a 
  lemon 
  or 
  an 
  orange 
  is 
  "quartered" 
  the 
  

   line 
  of 
  division 
  begins 
  at 
  the 
  angle 
  w^here 
  the 
  wall 
  between 
  

   the 
  locuh 
  divides 
  and 
  passes 
  along 
  the 
  center 
  of 
  the 
  walj 
  

   showing 
  that 
  it 
  is 
  double. 
  The 
  loculi 
  are 
  seen 
  to 
  be 
  filled 
  

   with 
  the 
  pulp 
  mass 
  which 
  can 
  be 
  separated 
  into 
  many 
  

  

  clubs 
  ' 
  some 
  space 
  is 
  generally 
  occupied 
  by 
  the 
  seeds, 
  but 
  

   by 
  tar 
  the 
  greater 
  part 
  by 
  the 
  pulp. 
  The 
  pulp 
  clubs 
  have 
  a 
  

  

  loculus. 
  

  

  very 
  delicate 
  straw 
  color 
  and 
  are 
  semi-transparent; 
  their 
  

   Shape 
  and 
  size 
  varies 
  according 
  to 
  their 
  position 
  m 
  tn- 
  

  

  They 
  are 
  all 
  attached 
  to 
  the 
  back 
  of 
  the 
  loculus 
  

  

  hat 
  is 
  to 
  the 
  side 
  of 
  the 
  loculus 
  next 
  the 
  rind, 
  hence 
  tho 
  

   ymg 
  toward 
  the 
  center 
  of 
  the 
  fruit 
  are 
  longer 
  than 
  those 
  

   lying 
  nearer 
  the 
  rind. 
  The 
  long 
  clubs 
  are 
  usually 
  symmetj 
  

   ical 
  and 
  consist 
  of 
  a 
  tapering 
  body 
  with 
  a 
  long 
  attenua 
  e« 
  

   !i^ 
  for 
  attachment. 
  Those^ 
  neai4 
  the 
  rind 
  have 
  shoit 
  ^ 
  

  

  ^^^^^^^^T 
  dubs 
  that 
  come 
  in 
  contact 
  with 
  the 
  seedsj^ 
  

  

  L 
  

  

  