﻿28 
  KEY 
  AND 
  FLORA 
  

  

  1. 
  C. 
  virginica 
  L. 
  VIRGINIA 
  DAYFLOWER. 
  Stem 
  erect, 
  downy, 
  

   1-2 
  ft. 
  high. 
  Leaves 
  lanceolate 
  to 
  oblong-lanceolate, 
  taper-pointed, 
  

   3-5 
  in. 
  long, 
  somewhat 
  rough 
  above 
  ; 
  sheaths 
  inflated, 
  hairy, 
  the 
  open- 
  

   ing 
  often 
  fringed. 
  Spathes 
  containing 
  a 
  slimy 
  secretion. 
  Flowers 
  

   1 
  in. 
  wide, 
  the 
  odd 
  petal 
  lanceolate. 
  Capsule 
  3-seeded, 
  the 
  dorsal 
  

   cell 
  not 
  splitting 
  open. 
  On 
  moist, 
  sandy 
  soil.* 
  

  

  HI. 
  ZEBRINA 
  Schnizl. 
  

  

  Trailing 
  or 
  slightly 
  climbing 
  herbs. 
  Leaves 
  often 
  striped. 
  

   Flowers 
  usually 
  in 
  pairs. 
  Calyx 
  with 
  a 
  short 
  tube, 
  regularly 
  

   or 
  irregularly 
  3-parted. 
  Corolla 
  nearly 
  actinomorphic, 
  with 
  

   tube 
  longer 
  than 
  the 
  calyx. 
  Filaments 
  naked 
  or 
  bearded. 
  

   Ovary 
  3-celled, 
  3-6-ovuled. 
  

  

  i. 
  Z. 
  pendula 
  Schnizl. 
  WANDERING 
  JEW. 
  Stems 
  perennial, 
  pros- 
  

   trate 
  or 
  nearly 
  so, 
  branching 
  freely, 
  rooting 
  easily 
  at 
  the 
  nodes. 
  

   Leaves 
  somewhat 
  succulent, 
  lance-ovate 
  or 
  oblong, 
  crimson 
  beneath, 
  

   green 
  or 
  dark 
  purplish 
  above, 
  often 
  with 
  two 
  wide 
  silvery 
  stripes. 
  

   Cultivated 
  from 
  Mexico. 
  

  

  8. 
  PONTEDERIACEJE. 
  PICKEREL-WEED 
  FAMILY 
  

  

  Perennial 
  marsh 
  or 
  aquatic 
  herbs, 
  stems 
  simple 
  or 
  branched, 
  

   succulent. 
  Leaves 
  simple, 
  alternate. 
  Flowers 
  solitary 
  or 
  

   spiked, 
  each 
  subtended 
  by 
  a 
  leaf-like 
  spathe, 
  perfect, 
  mostly 
  

   not 
  actinomorphic. 
  Perianth 
  corolla-like, 
  6-parted. 
  Stamens 
  

   3 
  or 
  6, 
  unequal, 
  inserted 
  irregularly 
  in 
  the 
  tube 
  or 
  throat 
  of 
  

   the 
  perianth. 
  Ovary 
  superior, 
  1- 
  or 
  3-celled 
  ; 
  style 
  single 
  ; 
  

   stigma 
  entire 
  or 
  toothed. 
  Fruit 
  a 
  1-seeded 
  utricle.* 
  

  

  PONTEDERIA 
  L. 
  

  

  Stem 
  erect, 
  from 
  a 
  thick, 
  creeping 
  rootstock, 
  bearing 
  a 
  

   single 
  leaf 
  above 
  the 
  middle 
  and 
  several 
  sheathing, 
  bract-like 
  

   leaves 
  at 
  its 
  base. 
  Radical 
  leaves 
  numerous, 
  thick, 
  parallel- 
  

   veined. 
  Petiole 
  long, 
  from 
  a 
  sheathing 
  base. 
  Flowers 
  in 
  ter- 
  

   minal 
  spikes. 
  Perianth 
  2-lipped, 
  lobes 
  of 
  the 
  upper 
  lip 
  ovate, 
  

   of 
  the 
  lower 
  oblong, 
  spreading. 
  Stamens 
  6, 
  the 
  3 
  upper 
  short 
  

   and 
  often 
  imperfect, 
  the 
  3 
  lower 
  protruding. 
  Ovary 
  3-celled, 
  

  

  