﻿KEY 
  TO 
  THE 
  FAMILIES 
  OF 
  FLOWEKING 
  PLANTS 
  

   DESCRIBED 
  IN 
  THIS 
  FLORA 
  

  

  CLASS 
  I 
  

  

  GYMNOS 
  PERMS. 
  Ovules 
  not 
  inclosed 
  in 
  an 
  ovary. 
  

  

  Trees 
  or 
  shrubs. 
  Leaves 
  usually 
  evergreen 
  and 
  needle-shaped, 
  awl-shaped, 
  

   or 
  scale-like. 
  Flowers 
  monoecious 
  or 
  dioecious. 
  Fruit 
  a 
  scaly 
  cone, 
  or 
  

   sometimes 
  appearing 
  berry-like. 
  1. 
  Tine 
  Family, 
  page 
  13 
  

  

  CLASS 
  II 
  

  

  ANGIOSPERMS. 
  Ovules 
  inclosed 
  in 
  an 
  ovary. 
  

  

  SUBCLASS 
  I. 
  MONOCOTYLEDONS. 
  Flowers 
  usually 
  with 
  their 
  

   parts 
  in 
  threes, 
  never 
  in 
  fives. 
  Leaves 
  usually 
  parallel-veined. 
  Cotyledon 
  1. 
  

  

  (1) 
  Flowers 
  inclosed 
  by 
  chaffy 
  bracts. 
  FAMILY 
  PAGE 
  

  

  Flowers 
  2-bracted. 
  Leaves 
  2-ranked. 
  Stem 
  cylin- 
  

   drical 
  : 
  4. 
  Grass 
  .... 
  22 
  

  

  Flowers 
  1-bracted. 
  Leaves 
  3-ranked. 
  Stem 
  trian- 
  

   gular 
  . 
  5. 
  Sedge 
  .... 
  23 
  

  

  (2) 
  Flowers 
  on 
  a 
  spadix. 
  

  

  Spadix 
  slender, 
  hairy, 
  and 
  bristly 
  2. 
  Cat-Tail 
  ... 
  20 
  

  

  Spadix 
  fleshy 
  6. 
  Arum 
  .... 
  24 
  

  

  (3) 
  Flowers 
  not 
  on 
  a 
  spadix. 
  

  

  (a) 
  Carpels 
  usually 
  numerous 
  and 
  nearly 
  or 
  entirely 
  

  

  separate 
  3. 
  Water 
  Plantain 
  . 
  21 
  

  

  (6) 
  Carpels 
  united. 
  

  

  * 
  Perianth 
  hypogynous 
  or 
  nearly 
  so. 
  

  

  t 
  Perianth 
  actinomorphic, 
  its 
  parts 
  similar, 
  green, 
  

  

  or 
  chaffy 
  9. 
  Rush 
  .... 
  30 
  

  

  1 
  1 
  Perianth 
  of 
  2 
  sets, 
  one 
  sepal-like, 
  the 
  other 
  petal- 
  

   like. 
  

  

  Style 
  and 
  stigma 
  1. 
  Petals 
  3 
  or 
  2, 
  soon 
  disap- 
  

   pearing 
  .... 
  7. 
  Spiderwort 
  . 
  . 
  26 
  

  

  5 
  

  

  