﻿SPECIES 
  OF 
  VISCID 
  BOLETI. 
  63 
  

  

  reddish-brown 
  glandular 
  dots, 
  yellow 
  within 
  ; 
  spores 
  ochraceo-fer- 
  

   ruginous, 
  oblong 
  or 
  subfusiform, 
  .00035 
  to 
  .00045 
  in. 
  long, 
  .00016 
  

   to 
  .0002 
  broad. 
  

  

  Gregarious, 
  pileus 
  1 
  to 
  3 
  in. 
  broad, 
  stem 
  1.5 
  to 
  2.5 
  in. 
  long, 
  2 
  to 
  4 
  

   lines 
  thick. 
  

  

  Under 
  or 
  near 
  pine 
  trees 
  in 
  woods 
  and 
  open 
  places. 
  Very 
  com- 
  

   mon. 
  July 
  to 
  October. 
  

  

  This 
  is 
  one 
  of 
  our 
  most 
  common 
  species. 
  It 
  is 
  generally 
  associated 
  

   with 
  B. 
  granulatus, 
  from 
  which 
  it 
  is 
  easily 
  distinguished 
  by 
  its 
  thinner 
  

   pileus, 
  yellow 
  color 
  and 
  more 
  slender 
  stem. 
  As 
  in 
  that 
  and 
  other 
  

   related 
  species, 
  the 
  stem 
  and 
  tubes 
  exude 
  drops 
  of 
  a 
  turbid 
  milk 
  or 
  

   juice 
  which 
  hardens 
  and 
  forms 
  the 
  glandular 
  dots 
  seen 
  on 
  them. 
  

   These 
  are 
  sometimes 
  so 
  numerous 
  that 
  they 
  become 
  confluent. 
  By 
  

   them 
  and 
  the 
  viscidity 
  of 
  the 
  pileus 
  in 
  this 
  and 
  allied 
  species 
  the 
  

   fingers 
  become 
  stained 
  in 
  handling 
  the 
  fresh 
  plants. 
  The 
  species 
  is 
  

   closely 
  related 
  to 
  the 
  European 
  B. 
  Jlavidus, 
  to 
  which 
  our 
  plant 
  has 
  

   commonly 
  been 
  referred 
  by 
  American 
  nvvcologists, 
  and 
  under 
  which 
  

   name 
  it 
  stands 
  in 
  the 
  Twenty-third 
  Report. 
  I 
  am 
  satisfied 
  by 
  more 
  

   recent 
  investigation 
  that 
  it 
  should 
  be 
  kept 
  distinct, 
  inasmuch 
  as 
  it 
  

   constantly 
  differs 
  in 
  the 
  character 
  of 
  the 
  veil 
  and 
  the 
  dots 
  of 
  the 
  

   stem. 
  In 
  B. 
  Jlavidus 
  the 
  stem 
  is 
  described 
  as 
  sprinkled 
  with 
  fuga- 
  

   cious 
  glandules 
  above 
  the 
  merely 
  viscous 
  annulus. 
  In 
  B. 
  Amemcanus 
  

   the 
  stem 
  is 
  dotted 
  from 
  top 
  to 
  base 
  with 
  persistent 
  glandules, 
  there 
  

   is 
  no 
  appearance 
  of 
  an 
  annulus 
  on 
  it 
  and 
  the 
  veil 
  is 
  somewhat 
  to- 
  

   mentose 
  on 
  the 
  margin 
  of 
  the 
  young 
  pileus. 
  The 
  plant 
  has 
  a 
  slight 
  

   subacid 
  odor 
  which 
  is 
  perceptible 
  even 
  in 
  the 
  dried 
  specimens. 
  The 
  

   mycelium 
  is 
  white. 
  

  

  Boletus 
  subaureus 
  Pk. 
  

  

  Pale-golden 
  Boletus. 
  

  

  Pileus 
  convex, 
  becoming 
  nearly 
  plane, 
  soft, 
  viscose, 
  pale-yellow 
  or 
  

   golden-yelloiv, 
  sometimes 
  adorned 
  with 
  darker 
  spots 
  or 
  small 
  tufts 
  of 
  

   hairs, 
  the 
  margin 
  in 
  the 
  young 
  plant 
  slightly 
  grayish-tomentose, 
  

   flesh 
  pale-yellow 
  ; 
  tubes 
  small 
  or 
  medium 
  size, 
  somewhat 
  angular, 
  

   adnate 
  or 
  subdecurrent, 
  pale-yellow, 
  becoming 
  dingy-ochraceous 
  ; 
  

   stem 
  equal, 
  stout, 
  glandular-dotted, 
  yellow 
  without 
  and 
  within 
  ; 
  spores 
  

   ochraceous-brown, 
  oblong 
  or 
  subfusiform, 
  .00035 
  to 
  .0004 
  in. 
  long, 
  

   .00016 
  broad. 
  

  

  Plant 
  gregarious 
  or 
  rarely 
  cyespitose, 
  pileus 
  2 
  to 
  4 
  in. 
  broad, 
  stem 
  

   1.5 
  to 
  2.5 
  in. 
  long, 
  4 
  to 
  6 
  lines 
  thick. 
  

  

  