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  KEY 
  AND 
  FLORA 
  

  

  I. 
  SCUTELLARIA 
  L. 
  

  

  Mostly 
  slender 
  herbs, 
  not 
  aromatic. 
  Flowers 
  solitary 
  or 
  in 
  

   pairs, 
  axillary 
  or 
  in 
  terminal 
  spikes 
  or 
  racemes. 
  Calyx 
  bell- 
  

   shaped, 
  2-lipped, 
  the 
  upper 
  part 
  swollen 
  into 
  a 
  helmet-shaped 
  

   pouch 
  ; 
  mouth 
  of 
  the 
  calyx 
  closed 
  after 
  flowering. 
  Corolla 
  

   tube 
  long, 
  naked 
  inside. 
  Stamens 
  4, 
  the 
  anthers 
  meeting 
  in 
  

   pairs, 
  hairy-fringed. 
  Style 
  with 
  a 
  very 
  short 
  upper 
  lobe. 
  

   [The 
  species 
  here 
  described 
  are 
  not 
  the 
  commonest 
  ones, 
  but 
  

   most 
  of 
  the 
  others 
  grow 
  in 
  damp 
  soil 
  and 
  bloom 
  later.] 
  

  

  1. 
  S. 
  serrata 
  Anrlr. 
  SKULLCAP. 
  Stem 
  not 
  much 
  branched, 
  1-3 
  ft. 
  

   high. 
  Stem 
  leaves 
  serrate, 
  taper-pointed 
  at 
  both 
  ends, 
  ovate 
  or 
  nearly 
  

   so. 
  Racemes 
  single, 
  loose. 
  Calyx 
  rather 
  hairy. 
  Corolla 
  1 
  in. 
  long, 
  

   the 
  lips 
  of 
  equal 
  length. 
  Woods. 
  

  

  2. 
  S. 
  pilosa 
  Michx. 
  HAIKY 
  SKI 
  I.I.CAP. 
  Stem 
  more 
  or 
  less 
  hairy, 
  

   not 
  much 
  if 
  at 
  all 
  branched, 
  1~:J 
  ft. 
  high. 
  Leaves 
  a 
  few 
  distant 
  pairs, 
  

   diamond-ovate, 
  oblong-ovate, 
  or 
  roundish-ovate, 
  scalloped, 
  obtuse, 
  

   the 
  lower 
  heart-shaped 
  or 
  nearly 
  truncate 
  at 
  the 
  base, 
  with 
  long 
  

   petioles. 
  Racemes 
  short, 
  few-flowered. 
  Corolla 
  \ 
  in. 
  long; 
  tube 
  

   whitish, 
  lips 
  blue, 
  the 
  lower 
  one 
  rather 
  shorter. 
  Open 
  woodlands 
  

   and 
  dry 
  soil. 
  

  

  3. 
  S. 
  integrifolia 
  L. 
  LARGE-FLOWERED 
  SKULLCAP. 
  Stem 
  covered 
  

   with 
  fine, 
  grayish 
  down, 
  usually 
  unbranched, 
  1-2 
  ft. 
  high. 
  Leaves 
  

   lance-oblong 
  or 
  nearly 
  linear, 
  mostly 
  entire, 
  obtuse, 
  with 
  very 
  short 
  

   petioles. 
  Corolla 
  1 
  in. 
  long, 
  tube 
  pale, 
  lips 
  large 
  and 
  spreading, 
  blue. 
  

   Dry 
  ground. 
  

  

  4. 
  S. 
  parvula 
  Michx. 
  SMALL 
  SKULLCAP. 
  Perennial 
  with 
  necklace- 
  

   like 
  tuber-bearing 
  rootstocks. 
  Stems 
  slender, 
  minutely 
  downy, 
  3-12 
  

   in. 
  long, 
  erect 
  or 
  spreading. 
  Leaves 
  varying 
  from 
  ovate 
  to 
  lanceo- 
  

   late, 
  or 
  the 
  lower 
  nearly 
  round. 
  Flowers 
  solitary 
  in 
  the 
  axils 
  of 
  the 
  

   upper 
  leaves. 
  Corolla 
  J-i 
  in. 
  long, 
  violet, 
  downy. 
  In 
  moist, 
  sandy 
  soil. 
  

  

  II. 
  MARRUBIUM 
  L. 
  

  

  Perennial, 
  downy, 
  or 
  woolly 
  herbs. 
  Whorls 
  of 
  flowers 
  axil- 
  

   lary 
  ; 
  flowers 
  small 
  ; 
  bracts 
  leaf-like. 
  Calyx 
  tubular, 
  5-10- 
  

   toothed 
  ; 
  teeth 
  somewhat 
  spiny. 
  Corolla 
  short 
  ; 
  upper 
  lip 
  erect, 
  

   lower 
  spreading, 
  3-cleft, 
  the 
  middle 
  lobe 
  broadest. 
  Stamens 
  4, 
  

   not 
  projecting. 
  Lobes 
  of 
  the 
  stigma 
  short 
  and 
  blunt. 
  

  

  1. 
  M. 
  vulgare 
  L. 
  HORE 
  HOUND. 
  Stems 
  somewhat 
  reclining, 
  stout, 
  

   branching, 
  leafy, 
  1-1 
  ft. 
  high. 
  Leaves 
  broadly 
  ovate, 
  heart-shaped 
  

   or 
  wedge-shaped 
  at 
  the 
  base, 
  scalloped, 
  leathery 
  and 
  wrinkled. 
  AVhorls 
  

  

  