﻿KEY 
  AND 
  FLORA 
  

  

  6. 
  P. 
  dumetorum 
  L. 
  FALSI 
  I'.i 
  < 
  K\\ 
  HK.AT. 
  Perennial. 
  Stems 
  slen- 
  

   der, 
  twining, 
  branched, 
  2-10 
  ft. 
  long. 
  Leaves 
  ovate, 
  taper-pointed, 
  

   heart-shaped 
  to 
  halberd-shaped 
  at 
  the 
  base, 
  long-petioled. 
  Stipules 
  

   cylindrical, 
  truncate. 
  Flowers 
  in 
  axillary, 
  more 
  or 
  less 
  compound 
  and 
  

   leafy 
  racemes. 
  Calyx 
  greenish-white, 
  the 
  outer 
  lobes 
  winged 
  and 
  form- 
  

   ing 
  a 
  margin 
  on 
  the 
  pedicel. 
  Stamens 
  8. 
  Stigmas 
  3. 
  Akene 
  3-angled, 
  

   black, 
  smooth, 
  and 
  shining. 
  Margins 
  of 
  fields 
  and 
  thickets.* 
  

  

  III. 
  FAGOPYRUM 
  Hill 
  

  

  Smooth 
  annual 
  herbs, 
  with 
  more 
  or 
  less 
  triangular 
  leaves 
  ; 
  

   the 
  sheathing 
  stipules 
  cylindrical 
  or 
  funnel-shaped. 
  Flowers 
  

   bisexual, 
  white, 
  greenish 
  or 
  tinged 
  with 
  rose 
  color, 
  in 
  terminal 
  

   or 
  axillary, 
  often 
  panicled, 
  racemes. 
  Calyx 
  petal-like 
  (Fig. 
  14), 
  

   5-parted. 
  Stamens 
  8. 
  Styles 
  3, 
  with 
  knobbed 
  stigmas. 
  Akene 
  

   3-angled, 
  much 
  longer 
  than 
  the 
  persistent 
  calyx 
  (Fig. 
  14). 
  

  

  A 
  B 
  C 
  

  

  Fi<;. 
  14. 
  Buckwheat 
  (F<ujopyrum 
  esculentum) 
  

  

  A, 
  flower; 
  B, 
  section 
  of 
  flower; 
  C, 
  fruit. 
  (All 
  somewhat 
  magnified.) 
  

  

  (After 
  Marchaud) 
  

  

  1. 
  F. 
  esculentum 
  M<ench. 
  BUCKWIIKAT. 
  Annual, 
  nearly 
  smooth 
  

   Leaves 
  halberd-shaped, 
  !-:> 
  in. 
  long. 
  Flowers 
  white 
  or 
  nearly 
  so, 
  with 
  

   8 
  yellow 
  nectar-bearing 
  -lands 
  between 
  the 
  stamens. 
  Old 
  fields 
  and 
  

   thickets, 
  escaped 
  from 
  cultivation. 
  Introduced 
  from 
  Europe 
  or 
  west- 
  

   ern 
  Asia. 
  

  

  26. 
  CHENOPODIACEJE. 
  GOOSKFOOT 
  FAMILY 
  

   Herbs 
  or 
  shrubs. 
  Leaves 
  simple, 
  alternate, 
  without 
  stipules. 
  

   Flowers 
  small, 
  actinomorphic, 
  either 
  bisexual 
  or 
  more 
  or 
  less 
  

   monoecious 
  or 
  dioscious. 
  Calyx 
  free 
  from 
  the 
  ovary. 
  Corolla 
  

   wanting. 
  Stamens 
  usually 
  5, 
  opposite 
  the 
  sepals. 
  Styles 
  or 
  

   stigmas 
  generally 
  2. 
  Fruit 
  with 
  1 
  seed, 
  usually 
  inclosed 
  in 
  a 
  

   small, 
  bladdery 
  sac, 
  sometimes 
  an 
  akene. 
  

  

  