﻿Five-leaved 
  Clover 
  343 
  

  

  we 
  obtain 
  a 
  crown 
  of 
  six 
  or 
  seven 
  leaflets 
  on 
  one 
  

   stalk. 
  Such 
  were 
  often 
  met 
  with 
  in 
  the 
  race 
  I 
  

   had 
  under 
  cultivation, 
  but 
  as 
  a 
  rule 
  it 
  did 
  not 
  ex- 
  

   ceed 
  this 
  limit. 
  

  

  The 
  same 
  phenomenon 
  of 
  a 
  lateral 
  doubling 
  

   of 
  leaflets 
  may 
  of 
  course 
  be 
  met 
  with 
  in 
  other 
  

   instances. 
  The 
  common 
  laburnum 
  has 
  a 
  va- 
  

   riety 
  which 
  often 
  produces 
  quaternate 
  and 
  

   quinate 
  leaves, 
  and 
  in 
  strawberries 
  I 
  have 
  also 
  

   seen 
  instances 
  of 
  this 
  abnormality. 
  It 
  occurs 
  

   also 
  in 
  pinnate 
  leaves, 
  and 
  complete 
  sets 
  of 
  all 
  

   the 
  intermediate 
  links 
  may 
  often 
  be 
  found 
  on 
  

   the 
  false 
  or 
  bastard-acacia 
  (Robinia 
  Pseud- 
  

   Acacia). 
  

  

  Opposed 
  to 
  this 
  increase 
  of 
  the 
  number 
  of 
  

   leaflets, 
  and 
  still 
  more 
  rare 
  and 
  more 
  curious 
  is 
  

   the 
  occurrence 
  of 
  " 
  single-leaved 
  ' 
  varieties 
  

   among 
  trees 
  and 
  herbs 
  with 
  pinnate 
  or 
  ternate 
  

   leaves. 
  Onlv 
  very 
  few 
  instances 
  have 
  been 
  de- 
  

  

  V 
  * 
  

  

  scribed, 
  and 
  are 
  cultivated 
  in 
  gardens. 
  The 
  

   ashes 
  and 
  the 
  bastard-acacia 
  may 
  be 
  quoted 
  

   among 
  trees, 
  and 
  the 
  " 
  one-leaved 
  : 
  ' 
  strawberry 
  

   among 
  herbs. 
  Here 
  it 
  seems 
  that 
  several 
  leaf- 
  

   lets 
  have 
  been 
  combined 
  into 
  one, 
  since 
  this 
  one 
  

   is, 
  as 
  a 
  rule, 
  much 
  larger 
  than 
  the 
  terminal 
  leaf- 
  

   let 
  of 
  an 
  ordinary 
  leaf 
  of 
  the 
  same 
  species. 
  

   These 
  monophyllous 
  varieties 
  are 
  interesting 
  

   also 
  on 
  account 
  of 
  their 
  continuous 
  but 
  often 
  in- 
  

   complete 
  reversion 
  to 
  the 
  normal 
  type. 
  

  

  