﻿106 
  KEY 
  AND 
  FLORA 
  

  

  1. 
  D. 
  diphylla 
  L. 
  TWO-LEAVED 
  TOOTHWORT, 
  PEPPER 
  ROOT 
  

   CRINKLE 
  ROOT. 
  Rootstock 
  long, 
  often 
  branched, 
  toothed, 
  eatable, 
  

   with 
  a 
  flavor 
  like 
  that 
  of 
  cress 
  or 
  radish. 
  Stem 
  leaves 
  2, 
  close 
  

   together, 
  each 
  composed 
  of 
  3 
  ovate-diamond-shaped 
  and 
  toothed 
  or 
  

   orenate 
  leaflets 
  ; 
  the 
  basal 
  leaf 
  like 
  the 
  stem 
  leaves. 
  Flowers 
  white. 
  

   Damp 
  woods. 
  

  

  2. 
  D. 
  laciniata 
  Muhl. 
  CROW'S-FOOT. 
  Rootstock 
  short, 
  necklace- 
  

   like. 
  Stem 
  leaves 
  3-parted 
  ; 
  basal 
  leaf 
  often 
  absent. 
  Flowers 
  white 
  

   or 
  rose 
  color. 
  Woods. 
  

  

  XII. 
  CARDAMIHE 
  L. 
  

  

  Annual 
  or 
  perennial. 
  Rootstock 
  often 
  scaly 
  or 
  bulb-bearing. 
  

   Stem 
  erect 
  or 
  ascending, 
  usually 
  smooth. 
  Leaves 
  more 
  or 
  

   less 
  divided. 
  Flowers 
  in 
  terminal 
  racemes, 
  white 
  or 
  purple. 
  

   Petals 
  rather 
  large. 
  Stamens 
  6. 
  Fruit 
  a 
  linear, 
  flattened 
  pod 
  ; 
  

   seeds 
  several, 
  in 
  a 
  single 
  row 
  in 
  each 
  cell.* 
  

  

  1. 
  C. 
  rhomboidea 
  DC. 
  BULBOUS 
  CRESS. 
  Perennial. 
  Root 
  tuber- 
  

   ous. 
  Stem 
  simple, 
  erect, 
  smooth, 
  without 
  runners, 
  9-18 
  in. 
  tall. 
  

   Lower 
  leaves 
  long-petioled, 
  ovate, 
  orbicular, 
  or 
  heart-shaped, 
  often 
  

   angled 
  or 
  toothed 
  ; 
  the 
  upper 
  short-petioled 
  or 
  sessile, 
  lanceolate 
  or 
  

   oblong, 
  toothed 
  or 
  entire. 
  Pedicels 
  \-l 
  in. 
  long. 
  Petals 
  white, 
  i-} 
  in. 
  

   long. 
  Pod 
  erect, 
  linear-lanceolate, 
  tipped 
  by 
  the 
  persistent 
  style; 
  

   seeds 
  round-oval. 
  Cool, 
  wet 
  places.* 
  

  

  2. 
  C. 
  pennsylvanica 
  Muhl. 
  BITTER 
  CRESS. 
  Annual. 
  Stem 
  slender, 
  

   erect, 
  simple, 
  or 
  with 
  a 
  few 
  slender 
  branches, 
  6-15 
  in. 
  tall. 
  Leaves 
  

   mostly 
  in 
  a 
  cluster 
  at 
  the 
  base 
  of 
  the 
  stem, 
  pinnately 
  divided, 
  the 
  

   terminal 
  lobe 
  roundish, 
  the 
  lateral 
  lobes 
  narrower, 
  somewhat 
  hairy 
  

   above; 
  stem 
  leaves 
  nearly 
  linear. 
  Flowers 
  small. 
  Petals 
  white, 
  longer 
  

   than 
  the 
  sepals. 
  Stamens 
  4. 
  Pods 
  linear, 
  erect 
  on 
  erect 
  pedicels, 
  

   about 
  1 
  in. 
  long; 
  seeds 
  oval. 
  In 
  wet 
  places.* 
  

  

  XIII. 
  ARABIS 
  L. 
  

  

  Annual 
  or 
  perennial 
  herbs, 
  smooth, 
  or 
  with 
  forked 
  or 
  star- 
  

   shaped 
  hairs. 
  Basal 
  leaves 
  spatulate 
  ; 
  stem 
  leaves 
  sessile. 
  

   Flowers 
  usually 
  white. 
  Petals 
  entire, 
  usually 
  with 
  claws. 
  

   Pods 
  linear, 
  flattened 
  ; 
  seeds 
  often 
  margined 
  or 
  winged. 
  

  

  1. 
  A. 
  hirsuta 
  Scop. 
  A 
  rough-hairy, 
  erect, 
  leafy-stemmed 
  biennial, 
  

   1-2 
  ft. 
  high. 
  Leaves 
  simple 
  ; 
  stem 
  leaves 
  oblong 
  or 
  lanceolate, 
  entire 
  

   or 
  toothed, 
  somewhat 
  clasping, 
  often 
  with 
  an 
  arrow-shaped 
  base. 
  

   Flowers 
  small, 
  greenish-white, 
  the 
  petals 
  somewhat 
  longer 
  than 
  the 
  

   sepals. 
  Pods 
  and 
  pedicels 
  upright. 
  Style 
  almost 
  wanting. 
  Seeds 
  

   roundish, 
  somewhat 
  wing-margined. 
  Rocks, 
  N. 
  

  

  