﻿170 
  COLLECTIONS 
  TOWARDS 
  

  

  of 
  the 
  Arkansas, 
  as, 
  near 
  the 
  Cadron 
  settlement, 
  and 
  on 
  the 
  banks 
  of 
  

   the 
  Pottoe, 
  a 
  few 
  miles 
  from 
  Fort 
  Smith 
  ; 
  but 
  only 
  abundant 
  on 
  the 
  

   banks 
  of 
  Red 
  river 
  and 
  the 
  Washita. 
  — 
  Ohs. 
  Not 
  being 
  acquainted 
  with 
  

   the 
  stameniferous 
  flowers 
  of 
  this 
  genus 
  when 
  I 
  published 
  it 
  in 
  the 
  

   Genera 
  of 
  North 
  American 
  Plants, 
  vol. 
  2, 
  p. 
  233, 
  I 
  shall 
  now 
  add 
  a 
  

   description 
  of 
  them, 
  so 
  as 
  to 
  complete 
  the 
  character. 
  The 
  male 
  flowers, 
  

   which 
  I 
  obtained 
  near 
  the 
  confluence 
  of 
  Red 
  river 
  and 
  the 
  Kiamesha, 
  

   in 
  a 
  withered 
  and 
  persistent 
  state, 
  appeared 
  to 
  have 
  been 
  in 
  flower 
  

   early 
  in 
  the 
  month 
  of 
  May. 
  They 
  are 
  quite 
  small, 
  and 
  of 
  a 
  greenish 
  

   colour, 
  collected 
  into 
  roundish, 
  clustered 
  and 
  pedunculated 
  racemes, 
  

   after 
  the 
  manner 
  of 
  beech 
  flowers 
  of 
  the 
  same 
  sex, 
  each 
  being 
  fur- 
  

   nished 
  with 
  a 
  proper 
  filiform 
  peduncle. 
  The 
  calix, 
  as 
  in 
  Morus, 
  is 
  

   4-parted, 
  with 
  oblong 
  segments, 
  and 
  not 
  more 
  conspicuous 
  or 
  larger 
  

   than 
  the 
  ordinary 
  flower 
  of 
  a 
  nettle 
  ; 
  the 
  stamens 
  are 
  commonly 
  four 
  

   in 
  number, 
  sometimes 
  less 
  ; 
  the 
  filaments, 
  which 
  are 
  pubescent 
  at 
  the 
  

   base, 
  appear 
  longer 
  than 
  the 
  calix, 
  and 
  by 
  their 
  structure, 
  in 
  all 
  proba- 
  

   bility, 
  spring 
  forward 
  elastically 
  after 
  the 
  opening 
  of 
  the 
  flower, 
  as 
  is 
  

   common 
  with 
  Urtica 
  and 
  some 
  neighbouring 
  genera. 
  The 
  2-celled 
  

   anthers, 
  as 
  well 
  as 
  the 
  filaments, 
  are 
  also 
  persistent. 
  

  

  The 
  wood 
  of 
  this 
  tree 
  appears 
  almost 
  precisely 
  similar 
  to 
  that 
  of 
  the 
  

   Fustick 
  (Morus 
  tinctoria) 
  of 
  commerce, 
  but 
  does 
  not 
  afford 
  a 
  perma- 
  

   nent 
  dye. 
  From 
  the 
  true 
  Fustick 
  this 
  plant 
  is 
  perfectly 
  distinct 
  ; 
  its 
  

   fruit 
  is 
  vastly 
  larger, 
  and 
  not, 
  as 
  in 
  that, 
  composed 
  of 
  distinct 
  acinic 
  but 
  

   of 
  germs 
  which 
  naturally 
  ingraft 
  themselves 
  into 
  a 
  simple 
  many-seeded 
  

   berry 
  like 
  the 
  orange, 
  &c. 
  

  

  Humulus 
  lupulus. 
  

  

  EUPHORBIACEAE. 
  

  

  1. 
  Euphorbia 
  cyathophora. 
  — 
  Near 
  Fort 
  Smith. 
  This 
  species, 
  in 
  

   the 
  United 
  States, 
  is 
  always 
  herbaceous 
  and 
  annual. 
  In 
  the 
  West 
  

   Indies 
  it 
  appears 
  to 
  be 
  shrubby. 
  2. 
  E. 
  graminifolia. 
  — 
  Agreeing 
  with 
  

   Michaux's 
  description, 
  except 
  in 
  being 
  perfectly 
  smooth, 
  and 
  apparently 
  

   not 
  much 
  inclined 
  to 
  branch. 
  

  

  3. 
  E. 
  dentata, 
  Mich. 
  Hirsuta, 
  erecta; 
  foliis 
  oppositis 
  alternisve, 
  

   ovato-lanceolatis 
  dentatisconcoloribus; 
  floribusad 
  summitatescongestis. 
  

  

  