﻿189^.] 
  BOTANICAL 
  GAZETTE. 
  

  

  97 
  

  

  Spec 
  

  

  Coulter 
  

  

  Harford 
  928, 
  Brewer 
  1564), 
  San 
  Francisco 
  Bay 
  ( 
  Wilkes' 
  Fzped. 
  

  

  southward" 
  {Douglas}. 
  

  

  Crawfordsville 
  . 
  

  

  {Hi 
  

  

  BRIEFER 
  ARTICLES. 
  

  

  P 
  

  

  Olandalar 
  pubescence 
  in 
  Aster 
  patens.— 
  While 
  studying 
  the 
  involu- 
  

   cral 
  bracts 
  of 
  some 
  of 
  our 
  Asters 
  I 
  found 
  a 
  specimen 
  of 
  A. 
  patens 
  wh'ich 
  

   differed 
  from 
  the 
  description 
  in 
  that 
  the 
  bracts 
  of 
  the 
  involucre 
  were 
  ap- 
  

   parently 
  glandular 
  pubescent. 
  This 
  led 
  to 
  a 
  further 
  examination 
  of 
  this 
  

  

  species 
  and 
  incidentally 
  others 
  that 
  were 
  described 
  as 
  being 
  glandular 
  

   pubescent. 
  

  

  The 
  earlier 
  authors, 
  in 
  their 
  descriptions 
  of 
  Asters, 
  do 
  not 
  mention 
  

   glandular 
  hairs, 
  even 
  when 
  they 
  are 
  so 
  evident 
  as 
  in 
  the 
  very 
  common 
  

   A. 
  Novae 
  -Anglise. 
  I 
  have 
  not 
  been 
  able 
  to 
  find 
  any 
  description 
  of 
  A. 
  pa- 
  

   tens 
  in 
  which 
  it 
  is 
  credited 
  with 
  glandular 
  pubescence. 
  Aiton, 
  who 
  first 
  

   described 
  it 
  (Hort. 
  Kew.), 
  followed 
  by 
  Pursh 
  and 
  Michaux 
  (A. 
  amplexi- 
  

   cauhs), 
  does 
  not 
  speak 
  of 
  any 
  kind 
  of 
  pubescence 
  on 
  the 
  bracts. 
  Elliott 
  

   (A. 
  undulatus) 
  says, 
  "involucre 
  pubescent;" 
  Darlington 
  (Fl. 
  Cest.), 
  "involu- 
  

   cre 
  minutely 
  scabrous;" 
  Nees(Ast.),"periclinii 
  * 
  * 
  foliolis 
  * 
  * 
  scabris;*^ 
  

   iorrey 
  (Nat. 
  His. 
  N. 
  Y.), 
  "scales 
  minutely 
  pubescent 
  or 
  hairy 
  and 
  some- 
  

   what 
  granulate." 
  It 
  is 
  described 
  by 
  other 
  authors 
  in 
  about 
  the 
  same 
  way. 
  

  

  In 
  the 
  case 
  of 
  A. 
  patens 
  Ait. 
  var. 
  phlogifolius 
  Nees, 
  I 
  find 
  no 
  mention 
  

   of 
  glandular 
  pubescence 
  except 
  under 
  A. 
  aurUus 
  (Lindl 
  in 
  DC. 
  Prod.) 
  

   which 
  Dr. 
  Gray 
  refers 
  to 
  this 
  variety. 
  It 
  is 
  described, 
  " 
  * 
  * 
  * 
  invo- 
  

  

  iucri 
  parum 
  imbricati, 
  squamis 
  linearibus 
  acuminatis 
  ramulusque 
  gland- 
  

  

  ulosis." 
  

  

  In 
  the 
  latest 
  revision 
  of 
  our 
  Asters 
  (Gray, 
  Syn. 
  Fl.) 
  several 
  species 
  are 
  

   described 
  as 
  being 
  glandular. 
  Subsection 
  2, 
  of 
  Aster 
  proper— 
  Glandulosi 
  

   consisting 
  of 
  eight 
  species, 
  is 
  set 
  off 
  by, 
  "Involucre 
  and 
  usually 
  branch- 
  

   lets 
  viscidly 
  or 
  pruinose-glandular 
  * 
  * 
  * 
  ." 
  Among 
  the 
  characters 
  

   Of 
  subsection 
  6 
  — 
  Patentes 
  — 
  consisting 
  of 
  A. 
  patens 
  Ait. 
  with 
  two 
  varieties, 
  

   gramlis 
  Hook, 
  and 
  phlogifolius 
  Nees, 
  is 
  "bracts 
  * 
  * 
  * 
  minutely 
  gran- 
  

   diose 
  or 
  scabrous, 
  but 
  not 
  glandular." 
  In 
  order 
  to 
  guard 
  against 
  mis- 
  

   takes, 
  it 
  is 
  remarked 
  in 
  parenthesis, 
  under 
  Glandulosi, 
  " 
  Glandular 
  invo- 
  

   ttcre 
  also 
  in 
  species 
  of 
  g 
  Machaeranthera," 
  and 
  in 
  connection 
  with 
  A 
  

   pauciflorus, 
  "involucre 
  * 
  * 
  * 
  viscid-glandular 
  * 
  * 
  * 
  might 
  be 
  

   sought 
  among 
  the 
  Glandulosi 
  of 
  true 
  Aster." 
  Glandular 
  pubescence 
  oc- 
  

   curs 
  m 
  several 
  other 
  species, 
  but 
  in 
  none 
  is 
  it 
  a 
  prominent 
  character^ 
  

  

  student. 
  

  

  be 
  

  

  