﻿84 
  

  

  BOTANICAL 
  GAZK'rrp. 
  [April 
  

  

  pollen-collecting 
  bees 
  ; 
  so 
  that, 
  at 
  the 
  start, 
  all 
  male 
  bees 
  and 
  

   al 
  cuckoo-bees 
  are 
  excluded. 
  Then 
  the 
  visitors 
  must 
  be 
  m- 
  

   teiJigent_ 
  enough 
  to 
  know 
  how 
  to 
  snap 
  the 
  flowers 
  and 
  to 
  keep 
  

   trom 
  being 
  frightened 
  by 
  their 
  explosion. 
  For 
  this 
  reason 
  

   the 
  visitors 
  of 
  Desmodium 
  are 
  the 
  most 
  intelligent 
  of 
  the 
  ge- 
  

   nera 
  to 
  which 
  they 
  belong, 
  or 
  are 
  at 
  least 
  more 
  used 
  to 
  visitinir 
  

  

  rlowers 
  ot 
  ComnlimtPrl 
  of.-„^f 
  

  

  flowers 
  of 
  complicated 
  structure. 
  

  

  Desfli 
  

  

  un 
  the 
  SIX 
  species 
  of 
  Desfliodium 
  mentioned 
  above 
  there 
  

   occur 
  tvvo 
  species 
  of 
  Bombus, 
  one 
  of 
  Melissodes, 
  two 
  of 
  

  

  Megachile 
  and 
  one 
  of 
  Calliopsis. 
  Of 
  eight 
  species 
  o( 
  Bom- 
  

   bus 
  which 
  nrriiT- 
  i*« 
  rr,,, 
  »,^:.,ui 
  i 
  ^ 
  R 
  ^ 
  • 
  . 
  :., 
  

  

  bus 
  Which 
  occur 
  m 
  my 
  neighborhood, 
  B. 
  americanorum 
  is 
  

   he 
  most 
  intelligent 
  and 
  the 
  most 
  important 
  visitor 
  of 
  irregu- 
  

   lai 
  flowers. 
  This 
  bee 
  was 
  seen 
  on 
  the 
  flowers 
  of 
  four 
  species. 
  

   While 
  B. 
  sepamus 
  was 
  seen 
  only 
  on 
  D. 
  Canadense. 
  Of 
  

   seven 
  species 
  of 
  Melissodes, 
  M. 
  bimacul 
  ^a 
  is 
  most 
  common 
  

   on 
  irregular 
  flowers, 
  while 
  the 
  others 
  occur 
  more 
  often 
  on 
  Com- 
  

  

  pff.n?' 
  .^ 
  °^ 
  ^'''^.^'^^ 
  'P^^^^^ 
  of 
  Megachile 
  also 
  limit 
  their 
  

   attentions 
  toCo^positae, 
  while 
  M. 
  breves 
  and 
  M. 
  mendica 
  are 
  

  

  sTcTeTJrT^''^-'^' 
  ^''^^''- 
  Tl^e 
  same 
  is 
  true 
  of 
  the 
  five 
  

   sPrvl^ 
  <r^^l^0Psis, 
  C. 
  audreniformis 
  being 
  the 
  only 
  one 
  ob- 
  

   served 
  on 
  irregular 
  flowers. 
  

  

  strJIi^fj.^''"^^-" 
  flowered 
  species 
  also 
  limit 
  their 
  visitors 
  by 
  the 
  

   is 
  moft 
  ^r^'i'^'fi 
  '^ 
  discharge 
  them. 
  Thus, 
  D. 
  Canadense 
  

   ber 
  ik^M 
  '"^-^'^'^'"^^ 
  ^y 
  ^^""^ble 
  bees, 
  sin"^ 
  the 
  smaller 
  

   The 
  li 
  t 
  r 
  ir^'"'' 
  '^''' 
  ,^^" 
  °"^>' 
  «"^P 
  them 
  with 
  difficiiltv. 
  

   L,Jrln\rf2 
  l'^^^^^ 
  5s 
  neither 
  strong 
  enough 
  

  

  Bu 
  whi 
  H? 
  "''P 
  Tl 
  '' 
  '' 
  ^""'S^ 
  «"o»gh 
  to 
  receive 
  the 
  pollen. 
  

   The 
  Hr"i 
  ,! 
  ' 
  '^^" 
  ^^.? 
  ^^"^ 
  excluded 
  from 
  the 
  large 
  flowers, 
  

   he 
  mfllei 
  r 
  """^ 
  '^''a^' 
  discharge 
  and 
  receive 
  the 
  pollen 
  ot 
  

   ne 
  smaller 
  flowers. 
  As 
  a 
  consequence, 
  the 
  smaller 
  flowers. 
  

  

  specii;' 
  Pr";"^^^^""^' 
  ^'^ 
  nought 
  by 
  a 
  greater 
  number 
  or 
  

   seemtodPn 
  ^"^ 
  T^- 
  '"^''^" 
  «°^^^^« 
  <^^^- 
  Marilandicum 
  

  

  Mycologic 
  observations. 
  I 
  

  

  A. 
  P. 
  MORGAX. 
  

  

  ( 
  January, 
  iSpo.) 
  

  

  favo;abTe 
  tol^e'gVSof 
  r 
  "'' 
  "^"^^"^i^^ 
  considered 
  very 
  

   and 
  mild 
  r- 
  " 
  ?. 
  ^I 
  n 
  ^^ 
  ^^'""S' 
  ' 
  Nevertheless 
  during 
  warm 
  

  

  A^de 
  from 
  hi 
  ^ 
  / 
  "^'\^^ 
  ^^"^^ 
  ^^^" 
  be 
  found 
  g?owing- 
  

   Aside 
  from 
  the 
  woody 
  and 
  leathery 
  forms 
  w 
  hich 
  are 
  peren- 
  

  

  