﻿270 
  BOTANICAL 
  GAZETTE. 
  [ 
  October, 
  

  

  Bentham's 
  A. 
  fiexicaulis 
  was 
  not 
  questioned. 
  It 
  is 
  now 
  found, 
  however, 
  

   that 
  flowering 
  specimens 
  collected 
  by 
  Gregg,evidently 
  our 
  Pithecolobium, 
  

   were 
  named 
  Acacia 
  flexicaulis 
  by 
  Bentliam, 
  certainly 
  without 
  a 
  careful 
  

   examination 
  of 
  the 
  flowers; 
  and 
  that 
  the 
  original 
  specimens 
  of 
  Berlan- 
  

   dier, 
  from 
  Taraaulipas, 
  were 
  flowerless. 
  It 
  seems 
  safe 
  to 
  conclude 
  that 
  

   all 
  that 
  has 
  ordinarily 
  been 
  called 
  Acacia 
  flexicaulis 
  must 
  be 
  referred 
  to 
  

   Pithecolobium 
  Texense; 
  and 
  its 
  recent 
  discovery 
  by 
  Dr. 
  Palmer 
  at 
  La 
  

   Paz 
  extends 
  its 
  range 
  through 
  Southern 
  Texas 
  and 
  Northern 
  Mexico 
  to 
  

   the 
  western 
  side 
  of 
  the 
  continent. 
  In 
  the 
  absence 
  of 
  flowering 
  speci- 
  

   mens 
  from 
  Berlandier's 
  locality 
  it 
  is 
  hardly 
  safe 
  to 
  conclude 
  that 
  Ben- 
  

   tham's 
  original 
  A. 
  flexicaulis 
  of 
  necessity 
  must 
  be 
  our 
  Pithecolobium, 
  

   If 
  this 
  can 
  be 
  proved, 
  the 
  long 
  known 
  specific 
  name 
  could 
  well 
  replace 
  

   the 
  newer 
  and 
  our 
  plant 
  be 
  known 
  as 
  P. 
  flexicaule. 
  It 
  is 
  more 
  prudent, 
  

   however, 
  to 
  consider 
  that 
  Bentham's 
  original 
  A. 
  flexicaulis 
  possibly 
  may 
  

   prove 
  to 
  be 
  an 
  Acacia 
  after 
  all, 
  and 
  to 
  leave 
  it 
  a 
  name 
  and 
  place. 
  

  

  John 
  M. 
  Coulter. 
  

  

  CURRENT 
  LITERATURE. 
  

  

  North 
  American 
  

  

  A 
  biolotflcal 
  survey 
  

  

  ^„v^,^^^.l,^ 
  ^uuna, 
  ao. 
  6, 
  publishea 
  by 
  tne 
  jlfivisiou 
  w 
  ^^'■■ 
  

  

  thology 
  and 
  Mammalogy 
  of 
  the 
  Department 
  of 
  Agriculture, 
  contains 
  a 
  

   matter 
  of 
  very 
  great 
  interest 
  to 
  botanists. 
  Dr. 
  C. 
  Hart 
  Merriam, 
  the 
  chief 
  

   of 
  the 
  Division, 
  has 
  felt 
  the 
  necessity 
  of 
  putting 
  the 
  biological 
  exploration 
  

   of 
  the 
  country 
  upon 
  a 
  thoroughly 
  scientific 
  basis. 
  The 
  patchy 
  collecting 
  

   and 
  maccurate 
  noting 
  of 
  localities, 
  which 
  has 
  largely 
  obtained 
  in 
  our 
  ex- 
  

   plormg 
  expeditions, 
  may 
  be 
  conceded 
  to 
  a 
  vast 
  terra 
  incognita 
  such 
  as 
  our 
  

   western 
  botanists 
  first 
  encountered 
  ; 
  but 
  no 
  such 
  concession 
  should 
  b« 
  

   made 
  now, 
  and 
  " 
  collecting 
  trips 
  " 
  should 
  be 
  transformed 
  into 
  " 
  biologic 
  

   surveys. 
  Dr. 
  Merriam 
  has 
  begun 
  the 
  good 
  work 
  by 
  a 
  careful 
  study 
  « 
  

   Inr^'lT-'^'^'*'''^ 
  ^*^ 
  Francisco 
  Mountain 
  Region 
  of 
  Arizona, 
  ajd 
  

   although 
  his 
  chief 
  concern 
  lay 
  with 
  vertebrate 
  animals, 
  his 
  zones 
  of 
  d* 
  

   tribution 
  were 
  necessarily 
  marked 
  out 
  by 
  plant 
  growth, 
  and 
  his 
  resula 
  

   are 
  not 
  only 
  of 
  great 
  botanical 
  interest, 
  but 
  are 
  far 
  more 
  valuable 
  in 
  *» 
  

   mey 
  mark 
  out 
  a 
  line 
  of 
  botanical 
  work 
  which 
  the 
  government 
  should 
  

   ZtZT 
  ""^T 
  ^""^ 
  ^"'^ 
  *^ 
  its 
  completion. 
  The 
  paper 
  before 
  us 
  «<^ 
  

   r^l.n 
  K 
  .""''V^' 
  *^^°^°Si^^' 
  features 
  of 
  the 
  San 
  Francisco 
  Mount^^ 
  

   RrS'carH- 
  '.'u' 
  ' 
  ''^"^'^^ 
  contribution 
  to 
  the 
  general 
  subject 
  ^ 
  

   Sv 
  It 
  f'""' 
  ^""'^ 
  W^^ 
  «h-^^ 
  be 
  reacfby 
  every 
  botan. 
  j 
  

   IZtfu 
  t 
  '**''"^'^* 
  ^^ 
  the 
  most 
  important 
  general 
  results^ 
  

   Hfe 
  arei 
  in' 
  T,""' 
  ' 
  ^^^ 
  ^^' 
  ^^^^^^^^^ 
  that 
  there 
  are 
  but 
  two 
  pr.n^ 
  

   hoClZ 
  ^^^ 
  ' 
  ^"^^^^^^ 
  (boreal) 
  and 
  a 
  southern 
  (subtrop^^J; 
  

  

  ^rpe^e 
  ratt''' 
  """'''^''''' 
  ^''"^^ 
  the 
  continent 
  and 
  sending 
  off 
  on 
  ; 
  

   terpenetratmg 
  arms; 
  (2) 
  The 
  consequent 
  abandonment 
  of 
  the 
  three 
  l-f' 
  

  

  