﻿146 
  COLLECTIONS 
  TOWARDS 
  

  

  (3 
  debilis. 
  5. 
  P. 
  jiuitans. 
  6. 
  P. 
  capillaris. 
  — 
  Obs. 
  The 
  whole 
  plant 
  

   asperate; 
  lower 
  spikelets 
  3 
  to 
  6-flowered, 
  upper 
  ones 
  bearing 
  from 
  

   10 
  to 
  12; 
  the 
  base 
  of 
  the 
  branchlets 
  tumid 
  and 
  pilose; 
  leaves 
  much 
  

   shorter 
  than 
  the 
  culm 
  ; 
  spikelets 
  purple. 
  Is 
  the 
  P. 
  hirsuta 
  of 
  Michaux 
  

   essentially 
  distinct 
  from 
  this 
  species 
  ? 
  

  

  7. 
  P. 
  *trichodes. 
  Glabra; 
  panicula 
  maxima 
  elongata, 
  capillari; 
  spi- 
  

   culis 
  laxis 
  lanceolatis 
  planis 
  3 
  — 
  8-floris 
  acutis 
  ; 
  foliis 
  longissimis. 
  Per- 
  

   haps 
  P. 
  tenuis 
  of 
  Elliott 
  Hab. 
  In 
  bushy 
  prairies 
  and 
  open 
  alluvial 
  

  

  lands. 
  — 
  Obs. 
  Perennial; 
  three 
  to 
  four 
  feet 
  high; 
  leaves 
  very 
  long 
  and 
  

   rather 
  broad, 
  smooth, 
  occasionally 
  pilose 
  at 
  the 
  orifice 
  of 
  the 
  sheath 
  ; 
  

   stipules 
  none 
  ; 
  panicle 
  one 
  to 
  two 
  feet 
  long, 
  innumerably 
  branched, 
  

   capillary, 
  divided 
  ; 
  spikelets 
  smooth, 
  upon 
  long 
  pedicells 
  ; 
  the 
  lower 
  

   ones 
  3 
  or 
  4-flowered, 
  the 
  upper 
  with 
  8; 
  calix 
  and 
  corolla 
  carinate, 
  very 
  

   acute 
  and 
  smooth, 
  almost 
  membranaceous 
  ; 
  florets 
  not 
  crowded 
  nor 
  

   tomentose 
  at 
  the 
  base; 
  dorsal 
  valve 
  3-nerved; 
  stamens 
  three, 
  pale 
  

   coloured. 
  

  

  8. 
  P. 
  conferta 
  (P. 
  glomerata, 
  Walter, 
  not 
  of 
  Linnaeus). 
  — 
  On 
  the 
  

   inundated 
  banks 
  of 
  the 
  larger 
  rivers. 
  9. 
  P. 
  parvijlora. 
  10. 
  P. 
  era- 
  

   grostis. 
  

  

  11. 
  P. 
  *interrupta. 
  Panicula 
  laxa, 
  interrupta 
  ; 
  spiculis 
  glomeratis, 
  

   subsessilibus, 
  oblongo-lanceolatis, 
  compressis, 
  multifloris 
  (8 
  — 
  16), 
  val- 
  

   vulis 
  acutissimis; 
  foliis 
  angustatis. 
  — 
  Hab. 
  In 
  bushy 
  prairies, 
  near 
  the 
  

   sandy 
  banks 
  of 
  the 
  Arkansas; 
  common. 
  — 
  Obs. 
  Perennial; 
  plant 
  

   glaucous 
  ; 
  leaves 
  narrow 
  ; 
  ligula 
  pilose, 
  obsolete 
  ; 
  culm 
  twelve 
  to 
  eigh- 
  

   teen 
  inches 
  ; 
  branches 
  of 
  the 
  panicle 
  somewhat 
  remote 
  and 
  divided, 
  

   partly 
  erect 
  ; 
  spikelets 
  conglomerated, 
  carinately 
  compressed, 
  appearing 
  

   serrated 
  ; 
  valves 
  ovate, 
  acute, 
  3-nerved 
  (after 
  the 
  manner 
  of 
  this 
  section 
  

   of 
  the 
  genus, 
  which 
  I 
  have 
  elsewhere 
  termed 
  Brizoma). 
  A 
  very 
  

   elegant 
  and 
  well 
  characterized 
  species. 
  Flowering 
  in 
  June. 
  

  

  12. 
  P. 
  pilosa 
  (P. 
  tenella, 
  Elliott 
  and 
  Nuttall 
  ; 
  P. 
  pectinacea? 
  

   Michaux). 
  13. 
  P. 
  hypnoides. 
  — 
  Abundant 
  and 
  common 
  along 
  the 
  in- 
  

   undated 
  banks 
  of 
  the 
  Mississippi. 
  1 
  4. 
  P. 
  reptans. 
  

  

  15. 
  P. 
  *capitata. 
  Dioica, 
  viscido-pubens 
  ; 
  culmo 
  reptante; 
  pani- 
  

   cula 
  foeminea 
  subrotunda 
  lobata 
  obtusa, 
  mascula 
  conferta; 
  spiculis 
  

   subduodecemfloris, 
  lanceolatis 
  ; 
  foliis 
  distichis 
  brevibus. 
  — 
  Hab. 
  On 
  the 
  

   sand-beaches 
  of 
  the 
  Arkansas. 
  Flowering 
  in 
  July. 
  — 
  Obs. 
  Allied 
  to 
  

  

  