﻿190 
  COLLECTIONS 
  TOWARDS 
  

  

  stigma 
  annulata, 
  apice 
  barbata 
  ; 
  semina 
  quatuor, 
  per 
  paria 
  approximata, 
  

   angulata, 
  basi 
  imperforata 
  obliqua, 
  calici 
  affixa. 
  

  

  Herbacea 
  ; 
  folia 
  aspera 
  alterna 
  ; 
  flores 
  sparsi, 
  limbo 
  plicato 
  convolvu- 
  

   laceo. 
  Messerschmidiae 
  Arguziaeque 
  affinis, 
  sed 
  fructu 
  diversa. 
  

  

  1. 
  E. 
  convolvulacea. 
  — 
  Descript. 
  Root 
  annual, 
  slightly 
  branched; 
  

   stem 
  angular, 
  four 
  to 
  six 
  inches 
  high, 
  sending 
  out 
  a 
  few 
  branches, 
  some- 
  

   times 
  both 
  at 
  the 
  base 
  and 
  the 
  summit; 
  leaves 
  mostly 
  alternate, 
  the 
  

   lowest 
  ones 
  opposite, 
  and, 
  as 
  well 
  as 
  the 
  most 
  part 
  of 
  the 
  plant, 
  asperate 
  

   with 
  very 
  scabrous 
  appressed 
  hairs, 
  their 
  form 
  ovate 
  and 
  entire, 
  sup- 
  

   ported 
  on 
  short 
  petioles 
  ; 
  flowers 
  lateral, 
  approximating 
  and 
  subsessile 
  ; 
  

   calix 
  5-parted, 
  shorter 
  than 
  the 
  tube 
  of 
  the 
  corolla, 
  the 
  segments 
  linear- 
  

   lanceolate 
  ; 
  corolla 
  white, 
  externally 
  pilose, 
  about 
  the 
  size 
  and 
  form 
  of 
  

   that 
  of 
  Ipomoea 
  coccinea 
  ; 
  the 
  tube 
  ovate, 
  contracted 
  both 
  at 
  its 
  base 
  

   and 
  summit, 
  the 
  stamina 
  inserted 
  below 
  its 
  middle 
  ; 
  border 
  flat, 
  plaited 
  

   and 
  membranaceous, 
  with 
  five 
  angles 
  ; 
  stamina, 
  filaments 
  none 
  ; 
  anthers 
  

   sessile 
  and 
  connivent, 
  situated 
  towards 
  the 
  middle 
  of 
  the 
  tube, 
  ovate 
  

   and 
  acute, 
  opening 
  internally, 
  with 
  the 
  membranes 
  of 
  the 
  cells 
  narrowed 
  

   upwards 
  and 
  diagonally 
  plaited; 
  style 
  included; 
  stigma 
  annulate, 
  hir- 
  

   sutely 
  bearded 
  at 
  the 
  apex; 
  seeds 
  four, 
  hairy, 
  approximating 
  by 
  pairs, 
  

   externally 
  convex, 
  but 
  flat 
  and 
  smooth 
  at 
  the 
  commissure 
  or 
  point 
  of 
  

   mutual 
  approximation, 
  with 
  the 
  umbilical 
  hilum 
  situated 
  above 
  the 
  

   middle 
  of 
  the 
  third 
  and 
  narrowest 
  side 
  of 
  the 
  seed, 
  in 
  immediate 
  con- 
  

   nection 
  with 
  the 
  quadrifid 
  base 
  of 
  the 
  style 
  ; 
  receptacle 
  compressed, 
  

   and 
  at 
  length 
  separated 
  from 
  the 
  base 
  of 
  the 
  style 
  ; 
  cotyledons 
  and 
  

   radicle 
  incurved 
  towards 
  the 
  umbilicus. 
  

  

  Hab. 
  On 
  the 
  sandy 
  banks 
  of 
  the 
  Arkansas. 
  Flowering 
  in 
  June, 
  

   the 
  flowers 
  of 
  an 
  agreeable 
  odour, 
  and 
  opening 
  towards 
  sunset, 
  as 
  in 
  

   the 
  Mirabilis 
  ! 
  Perhaps 
  this 
  plant 
  ought 
  to 
  be 
  united 
  with 
  the 
  Arguzia 
  

   of 
  Siberia, 
  which 
  requires 
  ulterior 
  examination 
  ; 
  though 
  from 
  the 
  de- 
  

   scription 
  of 
  Messerschmidia 
  incana 
  of 
  Meyer, 
  said 
  to 
  be 
  closely 
  allied 
  

   to 
  Arguzia, 
  and 
  of 
  the 
  fruit 
  of 
  which 
  a 
  very 
  minute 
  description 
  is 
  

   given 
  in 
  the 
  fourth 
  volume 
  of 
  the 
  Systema 
  Vegetabilium 
  of 
  Roemer 
  

   and 
  Schultes, 
  page 
  306, 
  our 
  plant 
  is 
  very 
  essentially 
  and 
  generically 
  

   distinct. 
  

  

  