﻿A 
  FLORA 
  OF 
  ARKANSAS 
  TERRITORY. 
  141 
  

  

  3. 
  C. 
  *peploides, 
  subcarspitosa; 
  foliis 
  omnibus 
  ellipticis; 
  fructibus 
  

   sessilibus. 
  — 
  Hab. 
  On 
  the 
  banks 
  of 
  the 
  Mississippi, 
  and 
  on 
  the 
  margins 
  

   of 
  ponds. 
  This 
  species 
  differs 
  from 
  the 
  preceding 
  by 
  the 
  greater 
  

   minuteness 
  and 
  sessile 
  posture 
  of 
  the 
  fruit; 
  the 
  stems 
  are 
  also 
  perfectly 
  

   erect. 
  It 
  cannot 
  well 
  be 
  confounded 
  with 
  the 
  heterophyllous 
  and 
  

   floating 
  species, 
  as 
  it 
  shows 
  no 
  tendency 
  to 
  either 
  one 
  or 
  the 
  other. 
  

   The 
  great 
  extent 
  of 
  its 
  geographical 
  distribution, 
  every 
  where 
  along 
  

   the 
  banks 
  of 
  the 
  Mississippi 
  and 
  the 
  neighbouring 
  ponds, 
  proves 
  it 
  to 
  

   be 
  no 
  transient 
  or 
  local 
  variety, 
  influenced 
  by 
  peculiar 
  circumstances. 
  

  

  Ceratophyllum 
  submersum? 
  

  

  1. 
  Myriophyllum 
  spzm/wm. 
  2. 
  M. 
  heterophyllum. 
  3. 
  M. 
  scabra- 
  

   tum. 
  — 
  Obs. 
  Fruit 
  with 
  eight 
  furrows, 
  and 
  the 
  ridges 
  muricate. 
  

  

  Proserpinaca 
  palustris. 
  The 
  quadration 
  of 
  the 
  parts 
  of 
  fructifi- 
  

   cation 
  which 
  frequently 
  happens 
  in 
  this 
  genus, 
  besides 
  the 
  great 
  simi- 
  

   larity 
  of 
  habit, 
  renders 
  it 
  inseparable 
  in 
  order 
  from 
  Myriophyllum. 
  

  

  1. 
  Potamogeton 
  natans. 
  2. 
  P 
  '. 
  heterophyllum. 
  

  

  Obs. 
  The 
  genera 
  Myriophyllum, 
  Ptilophyllum 
  and 
  Proserpinaca 
  

   (probably 
  terminating 
  with 
  two 
  cotyledons) 
  would, 
  perhaps, 
  have 
  been 
  

   more 
  properly 
  arranged 
  with 
  the 
  first 
  section 
  of 
  the 
  Onagrae 
  of 
  Jussieu. 
  

   Proserpinaca 
  has 
  been 
  heretofore 
  associated 
  with 
  the 
  Hydrocharideae. 
  

  

  AROIDEAE. 
  

  

  Saururus 
  cernuus. 
  — 
  Obs. 
  Stamens 
  on 
  the 
  lower, 
  and 
  as 
  far 
  as 
  above 
  

   the 
  middle 
  of 
  the 
  spike, 
  eight, 
  seven 
  and 
  six, 
  uppermost 
  flowers 
  often 
  

   producing 
  only 
  four. 
  This 
  genus 
  is 
  collated 
  with 
  the 
  Peperomia 
  of 
  

   Ruiz 
  and 
  Pavon, 
  and 
  we 
  cannot 
  perceive 
  any 
  sufficient 
  reason 
  for 
  ex- 
  

   cluding 
  the 
  genus 
  Piper 
  from 
  this 
  natural 
  association. 
  The 
  only 
  

   obstacle 
  appears 
  to 
  be 
  the 
  quadrature 
  of 
  the 
  germs 
  in 
  Saururus, 
  which, 
  

   however, 
  precisely 
  agrees 
  with 
  the 
  increased 
  number 
  of 
  stamens, 
  eight 
  

   in 
  place 
  of 
  two, 
  and 
  so 
  four 
  fruit 
  in 
  place 
  of 
  one. 
  The 
  sensible 
  taste 
  

   and 
  aroma 
  of 
  Saururus 
  is 
  similar 
  to 
  that 
  of 
  Acorus 
  calamus. 
  

  

  1. 
  Arum: 
  triphy 
  Hum. 
  2. 
  A. 
  draconlium. 
  — 
  Hab. 
  Near 
  the 
  Gadron 
  

   settlement. 
  

  

  Neither 
  Symplocarpus 
  nor 
  Orontium 
  appears 
  to 
  the 
  west 
  of 
  the 
  

   Alleghany 
  mountains. 
  

  

  VOL. 
  V. 
  2 
  L 
  

  

  