﻿196 
  COLLECTIONS 
  TOWARDS 
  

  

  figure 
  (111. 
  t. 
  183), 
  no 
  difference 
  is 
  discernible, 
  and 
  the 
  leaves 
  of 
  the 
  

   American 
  plant 
  are 
  more 
  frequently 
  emarginated 
  than 
  otherwise. 
  

  

  Cusctjta 
  Americana, 
  Willd. 
  Sp. 
  PI. 
  1, 
  p. 
  702. 
  

  

  HYDROLEAE. 
  

  

  Hydrolea 
  *ovata. 
  Spinosa, 
  puberula, 
  foliis 
  ovatis 
  utrinque 
  acutis, 
  

   floribus 
  corymbosis 
  laciniis 
  ovatis, 
  calicibus 
  hirsutis. 
  

  

  Descript. 
  Perennial. 
  The 
  whole 
  plant 
  covered 
  more 
  or 
  less 
  with 
  a 
  

   minute 
  and 
  soft 
  pubescence. 
  Stem 
  about 
  eighteen 
  inches 
  high, 
  herb- 
  

   aceous, 
  branching 
  only 
  at 
  the 
  period 
  of 
  flowering 
  ; 
  leaves 
  of 
  the 
  radical 
  

   shoots 
  almost 
  linear 
  and 
  crowded, 
  those 
  of 
  the 
  stem 
  elliptic, 
  ovate, 
  

   acute 
  at 
  either 
  end, 
  and 
  entire 
  on 
  the 
  margin 
  ; 
  the 
  axills 
  commonly 
  pro- 
  

   ducing 
  slender 
  solitary 
  spines, 
  being 
  apparently 
  so 
  many 
  abortive 
  

   branchlets 
  ; 
  flowers 
  bright 
  blue, 
  crowded 
  towards 
  the 
  summits 
  of 
  the 
  

   fastigiate 
  branchlets 
  ; 
  calix 
  5-cleft, 
  hairy, 
  the 
  segments 
  linear-lanceolate 
  ; 
  

   corolla 
  pelviform-campanulate, 
  with 
  ovate 
  segments 
  somewhat 
  larger 
  

   than 
  those 
  of 
  H. 
  spinosa, 
  as 
  figured 
  by 
  Aublet; 
  stamens 
  about 
  the 
  

   length 
  of 
  the 
  corolla 
  ; 
  styles 
  filiform, 
  two 
  and 
  three 
  ; 
  capsule 
  2 
  and 
  

   3-valved 
  ; 
  seeds 
  numerous 
  and 
  minute. 
  — 
  Hah. 
  On 
  the 
  margin 
  of 
  ponds 
  

   throughout 
  Arkansas. 
  

  

  POLEMONIACEAE. 
  

  

  Polemonium 
  reptans, 
  Willd. 
  Sp. 
  PI. 
  1, 
  p. 
  886. 
  — 
  On 
  the 
  banks 
  of 
  

   the 
  Mississippi 
  ; 
  rare. 
  

  

  1. 
  Phlox 
  paniculata, 
  Willd. 
  Sp. 
  PI. 
  1, 
  p. 
  839. 
  

  

  2. 
  P. 
  maculala, 
  Willd. 
  Sp. 
  PI. 
  1, 
  p. 
  840. 
  

  

  3. 
  P. 
  pilosa, 
  Willd. 
  Sp. 
  PI. 
  1, 
  p. 
  840 
  (Phlox 
  aristata, 
  Mich. 
  Flor. 
  

   Am. 
  1, 
  p. 
  144); 
  Icon. 
  Pluk. 
  Aim. 
  133, 
  t. 
  98, 
  f. 
  1. 
  

  

  4. 
  P. 
  *glomerata. 
  

  

  5. 
  P. 
  reptans, 
  Mich. 
  Flor. 
  Am. 
  1, 
  p. 
  144 
  (Phlox 
  stolonifera, 
  Bot. 
  

   Mag. 
  563). 
  

  

  Cantua 
  coronopifolia, 
  Willd. 
  Sp. 
  PI. 
  p. 
  879 
  (Cantua 
  thyrsoides, 
  

   Jussieu 
  in 
  Annales 
  du 
  Mus. 
  3, 
  p. 
  119; 
  Ipomopsis 
  elegans, 
  Mich. 
  Flor. 
  

   Am. 
  1, 
  p. 
  141 
  ; 
  Ipomeria 
  coronopifolia, 
  Nuttall's 
  Gen. 
  Am. 
  vol. 
  1, 
  p. 
  

  

  