﻿98 
  

  

  BOTANICAL 
  GAZETTE. 
  

  

  [ 
  April, 
  

  

  In 
  order 
  to 
  determine 
  to 
  what 
  extent 
  this 
  kind 
  of 
  pubescence 
  oc- 
  

   curred 
  in 
  Patentes, 
  all 
  the 
  specimens 
  available 
  were 
  examined. 
  In 
  those 
  

   from 
  St. 
  Louis 
  the 
  bracts 
  are 
  to 
  the 
  naked 
  eye 
  somewhat 
  silky 
  pubescent; 
  

   under 
  the 
  microscope 
  they 
  are 
  densely 
  appressed 
  villous, 
  in 
  some 
  cases 
  

   showing 
  only 
  here 
  and 
  there 
  a 
  gland 
  tipped 
  hair, 
  in 
  others 
  being 
  quite 
  

   glandular. 
  But 
  in 
  all 
  the 
  other 
  specimens, 
  representing 
  La., 
  Tex., 
  S. 
  

   C. 
  and 
  Pa., 
  the 
  glandular 
  hairs 
  are 
  numerous 
  and 
  distinct, 
  while 
  the 
  

   pointed 
  hairs 
  are 
  fewer, 
  thus 
  causing 
  the 
  involucre 
  to 
  appear 
  to 
  the 
  

   naked 
  eye 
  or 
  under 
  a 
  low 
  power 
  lens 
  as 
  "granulose"or 
  "minutely 
  

   scabrous." 
  

  

  Specimens 
  of 
  A. 
  patens 
  var. 
  gracilis 
  (Texas, 
  Lindheimer) 
  and 
  var. 
  

   phlogifolius 
  (Ky., 
  Short) 
  show 
  the 
  glandular 
  pubescence 
  very 
  distinctly, 
  as 
  

   do 
  specimens 
  of 
  the 
  same 
  from 
  other 
  localities. 
  

  

  In 
  size, 
  shape 
  and 
  general 
  appearance 
  the 
  glandular 
  hairs 
  are 
  very 
  

  

  similar 
  to 
  those 
  of 
  A. 
  oblongifdius 
  Nutt. 
  The 
  pedicels 
  are 
  one 
  to 
  three 
  

  

  times 
  as 
  long 
  as 
  the 
  glands, 
  rather 
  slender 
  and 
  not 
  much 
  widened 
  at 
  

  

  the 
  base; 
  the 
  glands 
  are 
  yellow, 
  more 
  or 
  less 
  roughened 
  and 
  viscid, 
  as 
  

  

  shown 
  by 
  the 
  adherence 
  of 
  particles 
  of 
  dirt. 
  The 
  whole 
  hair 
  is 
  about 
  half 
  

  

  as 
  long 
  as 
  the 
  intermixed 
  pointed 
  ones. 
  They 
  are 
  more 
  numerous 
  towards 
  

  

  the 
  tip 
  and 
  margin 
  of 
  the 
  bract, 
  and 
  were 
  observed 
  only 
  sparingly 
  on 
  

   the 
  pedicels. 
  

  

  1 
  

  

  2 
  

  

  3 
  

  

  4 
  

  

  5 
  

  

  6 
  

  

  7 
  

  

  Glandular 
  Hairs 
  of 
  Asters, 
  x 
  66. 
  

  

  8 
  

  

  9 
  

  

  natens 
  I'if^^vL^ 
  ^^^''-r' 
  4' 
  Pf 
  *^°^ 
  ^'^•' 
  ^*^- 
  Phlogifolius 
  Nees.; 
  3. 
  A. 
  

   SSnfr;' 
  V 
  fi^'r'' 
  ^°S-V^- 
  A. 
  oblongifolius 
  Nutt; 
  5. 
  A.kymno- 
  

   A 
  erandiflorm' 
  T 
  Q 
  • 
  ;*°^<^etifohu8 
  H. 
  B. 
  K.; 
  7. 
  A. 
  parviflorus 
  Gray 
  ; 
  8- 
  

   A. 
  grandiflorus 
  L,- 
  9. 
  A. 
  Novae- 
  Anglic 
  L. 
  (from 
  Iowa). 
  

  

  The 
  

  

  Gray. 
  

  

  Watson 
  

  

  Missouri 
  Botanical 
  

  

  