﻿142 
  KEY 
  AND 
  FLORA 
  

  

  49. 
  OXALIDACE^E. 
  WOOD 
  SORREL 
  FAMILY 
  

  

  Herbs 
  or 
  woody 
  plants. 
  Leaves 
  compound. 
  Flowers 
  in 
  fives, 
  

   bisexual, 
  actinomorphic, 
  hypogynous. 
  Stamens 
  10, 
  somewhat 
  

   monadelphous 
  at 
  the 
  base. 
  Ovary 
  with 
  several 
  ovules 
  in 
  each 
  

   cell. 
  Fruit 
  a 
  capsule. 
  

  

  OXALIS 
  L. 
  

  

  Acid 
  herbs. 
  Leaves 
  basal 
  or 
  alternate, 
  with 
  or 
  without 
  

   stipules, 
  usually 
  of 
  3 
  leaflets, 
  which 
  droop 
  at 
  night. 
  Sepals 
  5. 
  

   Petal* 
  3 
  5. 
  Stamens 
  10. 
  Ovary 
  5-lobed, 
  5-celled 
  ; 
  styles 
  5. 
  

  

  1. 
  0. 
  Acetosella 
  L. 
  WOOD 
  SORREL. 
  Apparently 
  stemless, 
  from 
  a 
  

   creeping, 
  scaly 
  rootstock. 
  Leaves 
  all 
  basal, 
  long-petioled, 
  of 
  3 
  in- 
  

   versely 
  heart-shaped 
  leaflets 
  ; 
  scape 
  slender, 
  2-5 
  in. 
  high, 
  1-flowered. 
  

   Flowers 
  nearly 
  1 
  in. 
  in 
  diameter, 
  white, 
  veined 
  with 
  red 
  or 
  purple. 
  

   Cold 
  woods 
  N. 
  

  

  2. 
  0. 
  violacea 
  L. 
  VIOLET 
  WOOD 
  SORREL. 
  Perennial 
  from 
  a 
  

   bulbous 
  root, 
  apparently 
  stemless. 
  Leaves 
  long-petioled 
  ; 
  leaflets 
  

   inversely 
  heart-shaped, 
  sometimes 
  slightly 
  downy, 
  often 
  with 
  a 
  dark 
  

   zone 
  near 
  the 
  middle. 
  Scapes 
  usually 
  longer 
  than 
  the 
  petioles, 
  um- 
  

   bellately 
  4-10-flowered; 
  pedicels 
  slender. 
  Flowers 
  violet-purple, 
  nod- 
  

   ding. 
  Petals 
  obtuse, 
  2-3 
  times 
  as 
  long 
  as 
  the 
  sepals; 
  scapes 
  and 
  

   petioles 
  4-5 
  in. 
  long. 
  Common 
  in 
  rich 
  woods.* 
  

  

  3. 
  0. 
  corniculata 
  L. 
  COMMON 
  YELLOW 
  WOOD 
  SORREL. 
  Probably 
  

   flowering 
  the 
  first 
  year 
  but 
  perennial, 
  propagated 
  by 
  slender 
  whitish 
  

   rootstocks. 
  Erect 
  or 
  decumbent, 
  often 
  sparsely 
  hairy, 
  usually 
  1 
  ft. 
  

   or 
  less 
  in 
  height. 
  Stem 
  leafy, 
  the 
  leaves 
  often 
  appearing 
  whorled. 
  

   Leaflets 
  thin, 
  green 
  or 
  purplish, 
  often 
  ciliate. 
  Peduncles 
  few-flowered, 
  

   the 
  ascending 
  pedicels, 
  clad 
  with 
  spreading 
  hairs, 
  forming 
  unsym- 
  

   metrical 
  umbels 
  or 
  cymes 
  at 
  their 
  summits. 
  Flowers 
  yellow, 
  about 
  

   \ 
  in. 
  in 
  diameter. 
  Pods 
  hairy, 
  columnar, 
  grooved, 
  often 
  in. 
  or 
  more 
  

   in 
  length. 
  A 
  common 
  weed 
  in 
  light 
  soil. 
  

  

  50. 
  TROPJEOLACEJE. 
  INDIAN 
  CRESS 
  FAMILY 
  

  

  Smooth 
  and 
  tender 
  herbaceous 
  plants, 
  with 
  biting 
  juice, 
  often 
  

   climbing 
  by 
  the 
  petioles 
  of 
  their 
  simple 
  leaves. 
  Leaves 
  alter- 
  

   nate, 
  without 
  stipules. 
  Peduncles 
  axillary, 
  1-flowered. 
  Sepals 
  

   3-5, 
  the 
  upper 
  one 
  with 
  a 
  long, 
  distinct 
  spur. 
  Petals 
  1-5, 
  

   hypogynous, 
  not 
  always 
  all 
  alike. 
  Stamens 
  6-10, 
  perigynous, 
  

  

  