﻿A 
  FLORA 
  OF 
  ARKANSAS 
  TERRITORY. 
  151 
  

  

  possesses 
  very 
  much 
  the 
  appearance 
  of 
  the 
  Monocera 
  of 
  Elliott 
  (Chloris 
  

   monostachya, 
  Mich.). 
  

  

  HoRDEUM^wsz7/wm, 
  Nuttall's 
  Gen. 
  Am. 
  vol. 
  1, 
  p. 
  87. 
  The 
  speci- 
  

   mens 
  which 
  I 
  collected 
  in 
  Cedar 
  prairie, 
  a 
  few 
  miles 
  from 
  Fort 
  Smith, 
  

   are 
  scarcely 
  less 
  than 
  twelve 
  inches 
  high, 
  while 
  those 
  of 
  the 
  arid 
  plains 
  

   of 
  the 
  Missouri 
  were 
  not 
  more 
  than 
  five 
  or 
  six. 
  

  

  1. 
  Eeymus 
  Canadensis. 
  2. 
  E. 
  virginicus. 
  

  

  1. 
  Asprella 
  * 
  Americana. 
  Spica 
  erecta, 
  spiculis 
  patentibus, 
  supe- 
  

   rioribus 
  subunisetis. 
  — 
  Obs. 
  In 
  the 
  American 
  plant 
  the 
  upper 
  spikelets 
  

   are 
  subtended 
  by 
  one 
  or 
  two 
  longish 
  setaceous 
  portions 
  of 
  an 
  involu- 
  

   crum, 
  entirely 
  wanting 
  in 
  the 
  European 
  species. 
  

  

  2. 
  A. 
  *~angustifolia. 
  Spiculis 
  pubescentibus, 
  involucrum 
  nullum. 
  

  

  Spartina 
  polystachya 
  (Limnetis 
  polystachya, 
  Persoon, 
  and 
  appa- 
  

   rently 
  L. 
  cynosuroides 
  of 
  the 
  same). 
  This 
  grass, 
  though 
  common 
  on 
  

   the 
  sea 
  coast, 
  exists 
  in 
  wet 
  prairies 
  throughout 
  the 
  Missouri 
  and 
  Arkan- 
  

   sas 
  territories 
  to 
  their 
  utmost 
  limits. 
  

  

  Rottboellia 
  *campestris. 
  Spica 
  solitaria 
  subcylindrica 
  glabra; 
  

   floribus 
  subsecundis 
  geminis 
  sterilibus 
  pedicellatis 
  ; 
  valvula 
  calycina 
  

   ovata, 
  punctata 
  ; 
  corolla 
  trivalvi. 
  — 
  Hah. 
  In 
  open 
  grassy 
  prairies, 
  abun- 
  

   dant. 
  Flowering 
  in 
  June. 
  — 
  Obs. 
  Perennial. 
  Culm 
  two 
  to 
  three 
  feet 
  

   high, 
  smooth 
  and 
  erect, 
  rarely 
  terminating 
  in 
  more 
  than 
  a 
  single 
  spike 
  ; 
  

   leaves 
  narrow 
  and 
  rather 
  short, 
  commonly 
  smooth 
  to 
  the 
  naked 
  eye 
  ; 
  

   ligules 
  minute 
  and 
  membranaceous 
  ; 
  spike 
  pedunculate, 
  about 
  six 
  inches 
  

   long, 
  nearly 
  cylindric 
  ; 
  rachis 
  flexuose 
  and 
  scrobiculate 
  ; 
  calix 
  of 
  the 
  

   perfect 
  flower 
  consisting 
  of 
  one 
  external 
  and 
  one 
  internal 
  valve 
  ; 
  Corolla 
  

   of 
  three 
  membranaceous 
  valves. 
  The 
  rudimental 
  flower 
  minute 
  and 
  

   neutral, 
  its 
  pedicell 
  appressed 
  to 
  the 
  scrobiculum 
  of 
  the 
  rachis 
  ; 
  an- 
  

   thers 
  three 
  ; 
  styles 
  two, 
  brown 
  and 
  plumose. 
  This 
  species 
  appears 
  to 
  

   be 
  allied 
  to 
  R. 
  coalorachis 
  of 
  the 
  isle 
  of 
  Tanna, 
  according 
  to 
  the 
  

   description 
  of 
  Forster, 
  which 
  is 
  not 
  sufficiently 
  complete 
  to 
  admit 
  of 
  

   decision. 
  It 
  appertains 
  to 
  the 
  section 
  which, 
  in 
  my 
  account 
  of 
  the 
  

   North 
  American 
  genera, 
  is 
  termed 
  Apogon, 
  from 
  their 
  affinity 
  to 
  An- 
  

   dropogon. 
  As 
  in. 
  R. 
  rugosa 
  there 
  described, 
  the 
  corolla 
  consists 
  of 
  

   three 
  valves.* 
  

  

  * 
  By 
  an 
  oversight 
  in 
  the 
  printing 
  of 
  the 
  above 
  mentioned 
  book, 
  in 
  the 
  fourth 
  line 
  of 
  the 
  

   specific 
  description, 
  page 
  84, 
  the 
  word 
  " 
  corolla," 
  which 
  ought 
  to 
  precede 
  " 
  3-valved," 
  has 
  

  

  