﻿FOODS 
  IN 
  PLANTS 
  

  

  45 
  

  

  though 
  it 
  does 
  not 
  seed 
  until 
  the 
  next 
  summer 
  after 
  it 
  is 
  

   planted 
  ; 
  and 
  the 
  cotton 
  plant, 
  the 
  lima 
  bean, 
  the 
  tomato, 
  and 
  

   the 
  castor 
  bean 
  are 
  instances 
  of 
  plants 
  which 
  with 
  us 
  are 
  culti- 
  

   vated 
  as 
  annuals, 
  but 
  which 
  in 
  warm 
  climates 
  live 
  several 
  years, 
  

   the 
  castor 
  bean 
  growing 
  into 
  a 
  large, 
  almost 
  tree-like 
  shrub. 
  

   Plants 
  which 
  live 
  for 
  more 
  than 
  one 
  year 
  usually 
  have 
  food 
  

   stored 
  in 
  their 
  roots. 
  

  

  FIG. 
  30. 
  Clustered, 
  fleshy 
  roots 
  of 
  the 
  dahlia, 
  with 
  much 
  stored 
  

   plant 
  food, 
  in 
  early 
  spring 
  

  

  st, 
  remains 
  of 
  last 
  year's 
  stem 
  ; 
  sh, 
  young 
  shoots 
  beginning 
  to 
  sprout 
  from 
  upper 
  

   ends 
  of 
  roots. 
  One 
  fourth 
  natural 
  size 
  

  

  Such 
  biennials 
  as 
  beets, 
  carrots, 
  and 
  parsnips 
  store 
  up 
  much 
  food 
  

   in 
  the 
  root 
  l 
  during 
  the 
  first 
  summer's 
  growth, 
  and 
  form 
  a 
  large 
  

   tuft, 
  or 
  rosette, 
  of 
  leaves, 
  but 
  do 
  not 
  develop 
  much 
  stem 
  above- 
  

   ground. 
  During 
  the 
  second 
  summer 
  the 
  stored 
  food 
  is 
  consumed 
  

   in 
  the 
  production 
  of 
  leafy 
  stems 
  bearing 
  flowers 
  and 
  fruit, 
  and 
  in 
  

   the 
  autumn 
  the 
  root 
  appears 
  quite 
  withered 
  and 
  nearly 
  dry. 
  

  

  Herbaceous 
  perennials, 
  like 
  the 
  dahlia 
  (fig. 
  30) 
  and 
  the 
  

   common 
  rhubarb, 
  store 
  food 
  in 
  the 
  root 
  during 
  the 
  summer 
  

  

  1 
  The 
  underground 
  part 
  of 
  the 
  carrot 
  and 
  the 
  parsnip 
  is 
  part 
  stem 
  and 
  

   part 
  root. 
  

  

  