﻿BLADDER 
  NUT 
  FAMILY 
  151 
  

  

  58. 
  STAPHYLEACE^. 
  BLADDER 
  NUT 
  FAMILY 
  

  

  Shrubs. 
  Leaves 
  pinnately 
  compound, 
  with 
  stipules, 
  and 
  

   the 
  leaflets 
  with 
  little 
  individual 
  stipules 
  (stipels). 
  Flowers 
  

   regular 
  and 
  perfect. 
  Calyx 
  lobes 
  5. 
  Petals 
  5, 
  inserted 
  in 
  or 
  

   around 
  a 
  saucer-shaped 
  disk. 
  Stamens 
  5, 
  alternate 
  with 
  the 
  

   petals, 
  perigynous. 
  Ovary 
  2-3-celled, 
  with 
  the 
  carpels 
  more 
  

   or 
  less 
  distinct 
  ; 
  ovules 
  several 
  ; 
  styles 
  2-3, 
  somewhat 
  united 
  

   below. 
  Fruit 
  usually 
  1-few-seeded. 
  

  

  STAPHYLEA 
  L. 
  

  

  Calyx 
  deeply 
  5-parted, 
  the 
  lobes 
  appearing 
  like 
  separate 
  

   sepals, 
  erect. 
  Petals 
  spatulate, 
  borne 
  on 
  the 
  rim 
  of 
  the 
  thick 
  

   disk. 
  Pod 
  large, 
  papery, 
  3-celled, 
  finally 
  opening 
  at 
  the 
  top. 
  

   Seeds 
  1-4 
  in 
  each 
  cell, 
  bony. 
  

  

  1. 
  S. 
  trifolia 
  L. 
  AMERICAN 
  BLADDER 
  NUT. 
  A 
  shrub 
  6-12 
  ft. 
  

   high, 
  with 
  smooth, 
  slender, 
  greenish-striped, 
  at 
  length 
  gray, 
  branches. 
  

   Leaves 
  long-petioled, 
  with 
  3 
  ovate, 
  taper-pointed, 
  finely 
  serrate 
  leaf- 
  

   lets. 
  Damp 
  thickets. 
  

  

  59. 
  ACERACE^. 
  MAPLE 
  FAMILY 
  

  

  Trees 
  or 
  shrubs, 
  with 
  abundant, 
  often 
  sugary 
  sap. 
  Leaves 
  

   opposite, 
  simple 
  and 
  palmately 
  lobed, 
  or 
  pinnate, 
  without 
  

   stipules. 
  Flowers 
  regular, 
  mostly 
  somewhat 
  monoecious 
  or 
  

   dioscious, 
  in 
  axillary 
  and 
  terminal 
  cymes 
  or 
  racemes. 
  Calyx 
  

   4-9-parted. 
  Petals 
  as 
  many 
  as 
  the 
  lobes 
  of 
  the 
  calyx 
  or 
  none. 
  

   Stamens 
  4-12, 
  hypogynous. 
  Ovary 
  2-celled; 
  styles 
  2. 
  Fruit 
  

   a 
  double 
  key.* 
  

  

  ACER 
  L. 
  

  

  Characteristics 
  of 
  the 
  genus 
  as 
  above 
  given 
  for 
  the 
  family. 
  

  

  1. 
  A. 
  saccharum 
  Marsh. 
  SUGAR 
  MAPLE. 
  A 
  large 
  tree. 
  Leaves 
  

   simple, 
  palmately 
  lobed, 
  truncate 
  or 
  heart-shaped 
  at 
  the 
  base, 
  lobes 
  

   sinuate-toothed 
  and 
  acuminate, 
  pale 
  and 
  slightly 
  downy 
  beneath. 
  

   Flowers 
  appearing 
  with 
  the 
  leaves, 
  on 
  clustered 
  drooping 
  pedicels. 
  

   Calyx 
  bell-shaped, 
  fringed. 
  Petals 
  none. 
  Keys 
  smooth, 
  wings 
  about 
  

  

  