﻿30 
  KEY 
  AND 
  FLORA 
  

  

  but 
  only 
  1 
  cell 
  ovule-bearing 
  ; 
  the 
  1-seeded 
  utricle 
  inclosed 
  

   by 
  the 
  base 
  of 
  the 
  perianth.* 
  

  

  1. 
  P. 
  cordata 
  L. 
  PICKEREL 
  WEED. 
  Stem 
  stout, 
  erect, 
  2-4 
  ft. 
  high. 
  

   Leaves 
  long, 
  from 
  heart-shaped 
  to 
  lanceolate 
  and 
  often 
  halberd- 
  

   shaped; 
  apex 
  and 
  basal 
  lobes 
  obtuse, 
  finely 
  nerved. 
  Spike 
  dense, 
  

   2-4 
  in. 
  long 
  ; 
  peduncles 
  inclosed 
  by 
  the 
  spathe. 
  Perianth 
  hairy, 
  blue, 
  

   the 
  upper 
  lip 
  with 
  2 
  yellow 
  spots 
  ; 
  tube 
  6-ribbed, 
  curved, 
  rather 
  longer 
  

   than 
  the 
  lobes. 
  Ovary 
  oblong. 
  In 
  ponds 
  and 
  slow 
  streams.* 
  

  

  9. 
  JUNCACEJE. 
  RUSH 
  FAMILY 
  

  

  Grass-like 
  perennial 
  or 
  annual 
  herbs, 
  mostly 
  growing 
  on 
  

   wet 
  soil. 
  Stems 
  mostly 
  erect 
  but 
  sometimes 
  creeping, 
  simple 
  

   or 
  branched, 
  naked 
  or 
  leafy 
  and 
  jointed. 
  Leaves 
  cylindrical, 
  

   sheathing 
  at 
  the 
  base, 
  very 
  slender 
  and 
  pointed 
  or 
  flattened 
  

   and 
  grass-like. 
  Flowers 
  in 
  cymes 
  or 
  panicles, 
  which 
  may 
  be 
  

   very 
  loose 
  and 
  spreading, 
  or 
  so 
  compact 
  as 
  to 
  form 
  a 
  head, 
  

   sometimes 
  with 
  a 
  rigid 
  scape 
  prolonged 
  beyond 
  the 
  flower 
  

   cluster. 
  Flowers 
  usually 
  bracted. 
  Perianth 
  of 
  6 
  nearly 
  equal, 
  

   scale-like, 
  persistent 
  divisions. 
  Stamens 
  3 
  or 
  6, 
  inserted 
  on 
  

   the 
  base 
  of 
  the 
  perianth. 
  Ovary 
  free, 
  1- 
  or 
  3-celled, 
  many- 
  

   ovuled 
  ; 
  style 
  single 
  ; 
  stigmas 
  3, 
  usually 
  hairy. 
  Fruit 
  a 
  1- 
  or 
  

   3-celled, 
  3-many-seeded 
  capsule. 
  [Most 
  species 
  flower 
  late 
  in 
  

   the 
  season, 
  and 
  their 
  identification 
  is 
  too 
  difficult 
  for 
  one 
  

   without 
  considerable 
  experience.]* 
  

  

  10. 
  LILIACEJE. 
  LILY 
  FAMILY 
  

  

  Mostly 
  herbs. 
  Flowers 
  actinomorphic. 
  Perianth 
  free 
  from 
  

   the 
  ovary. 
  Stamens 
  nearly 
  always 
  6, 
  one 
  before 
  each 
  division 
  

   of 
  the 
  perianth. 
  Ovary 
  usually 
  3-celled 
  ; 
  fruit 
  a 
  pod 
  or 
  berry, 
  

   few-many-seeded. 
  

  

  Except 
  in 
  the 
  genus 
  Trillium 
  the 
  divisions 
  of 
  the 
  perianth 
  

   are 
  colored 
  nearly 
  alike. 
  

  

  