﻿Cultivated 
  Elementary 
  Species 
  69 
  

  

  lar 
  strands; 
  the 
  larger 
  the 
  first 
  and 
  the 
  

   smaller 
  the 
  latter, 
  the 
  greater 
  is, 
  as 
  a 
  rule, 
  the 
  

   average 
  amount 
  of 
  sugar 
  of 
  the 
  race. 
  Through 
  

   the 
  kindness 
  of 
  the 
  late 
  Mr. 
  Rimpau, 
  a 
  well- 
  

   known 
  German 
  breeder 
  of 
  sugar-beet 
  varieties, 
  

   I 
  obtained 
  specimens 
  from 
  seed 
  of 
  a 
  native 
  wild 
  

   locality 
  near 
  Bukharest. 
  The 
  plants 
  produced 
  

   quite 
  woody 
  roots, 
  showing 
  almost 
  no 
  sugar- 
  

   tissue 
  at 
  all. 
  Woody 
  layers 
  of 
  strongly 
  de- 
  

   veloped 
  fibrovascular 
  strands 
  were 
  seen 
  to 
  be 
  

   separated 
  one 
  from 
  another 
  only 
  by 
  very 
  thin 
  

   layers 
  of 
  parenchymatous 
  cells. 
  Even 
  the 
  

   number 
  of 
  layers 
  is 
  variable 
  ; 
  it 
  was 
  observed 
  to 
  

   be 
  five 
  in 
  my 
  plants 
  ; 
  but 
  in 
  larger 
  roots 
  double 
  

   this 
  number 
  and 
  even 
  more 
  may 
  easily 
  be 
  met 
  

   with. 
  

  

  Some 
  authors 
  have 
  distinguished 
  specific 
  

   types 
  among 
  these 
  wild 
  forms. 
  While 
  the 
  

   cultivated 
  beets 
  are 
  collected 
  under 
  the 
  head 
  of 
  

   Beta 
  vulgaris, 
  separate 
  types 
  with 
  more 
  or 
  less 
  

   woody 
  roots 
  have 
  been 
  described 
  as 
  Beta 
  mari- 
  

   tima 
  and 
  Beta 
  patula. 
  These 
  show 
  differences 
  

   in 
  the 
  habit 
  of 
  the 
  stems 
  and 
  the 
  foliage. 
  Some 
  

   have 
  a 
  strong 
  tendency 
  to 
  become 
  annual, 
  

   others 
  to 
  become 
  biennial. 
  The 
  first 
  of 
  course 
  

   do 
  not 
  store 
  a 
  large 
  quantity 
  of 
  food 
  in 
  their 
  

   roots, 
  and 
  remain 
  thin, 
  even 
  at 
  the 
  time 
  of 
  flow- 
  

   ering. 
  The 
  biennial 
  types 
  occur 
  in 
  all 
  sizes 
  of 
  

   roots. 
  In 
  the 
  annuals 
  the 
  stems 
  may 
  vary 
  from 
  

  

  