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  Thibtieth 
  Repobt 
  on 
  the 
  State 
  Museum. 
  

  

  Maeasmius 
  pb^eacutus 
  Ellis. 
  

   Trunks 
  of 
  dead 
  alder 
  trees. 
  Mechanicsville. 
  October. 
  

  

  The 
  lam 
  ell 
  se 
  are 
  sometimes 
  quite 
  distant 
  and 
  rounded 
  behind. 
  

   The 
  stem 
  which 
  is 
  remarkable 
  for 
  its 
  thickness 
  and 
  peculiar 
  

   shape 
  and 
  which 
  constitutes 
  the 
  chief 
  part 
  of 
  the 
  young 
  plant 
  

   is 
  pulverulent 
  under 
  a 
  lens. 
  

  

  Paistus 
  tobulosus 
  Fr. 
  

   Oak 
  stumps. 
  Greenbush. 
  May. 
  

  

  Boletus 
  viscosus 
  Frost. 
  

   Light 
  sandy 
  soil 
  about 
  pine 
  woods. 
  Center. 
  October. 
  

  

  Polypobus 
  osseus 
  Kalclibr. 
  

  

  Old 
  stumps 
  in 
  woods. 
  Guilderland. 
  October. 
  

   Very 
  rare. 
  The 
  pores 
  in 
  our 
  specimens 
  are 
  a 
  little 
  larger 
  

   than 
  in 
  an 
  authentic 
  specimen 
  received 
  from 
  Dr. 
  Kalclibr 
  enner. 
  

  

  Polypobus 
  (Anodermei) 
  dualis 
  n. 
  sp. 
  

  

  Pileus 
  dimidiate, 
  sessile 
  or 
  sometimes 
  produced 
  behind 
  into 
  

   a 
  stem-like 
  base, 
  convex 
  or 
  nearly 
  plane 
  above, 
  somewhat 
  

   uneven, 
  rarely 
  with 
  a 
  slight 
  zonate 
  appearance, 
  single 
  or 
  csespi- 
  

   tosely 
  imbricating, 
  two 
  to 
  four 
  inches 
  broad, 
  nearly 
  as 
  long, 
  

   tawny 
  or 
  tawny-ferruginous, 
  the 
  margin 
  sometimes 
  paler 
  ; 
  flesh 
  

   concolorous, 
  the 
  upper 
  stratum 
  of 
  a 
  soft 
  spongy-tomentose 
  tex- 
  

   ture, 
  the 
  lower 
  firm 
  and 
  fibrous 
  ; 
  pores 
  minute, 
  unequal, 
  more 
  

   or 
  less 
  angular, 
  with 
  thin 
  dissepiments, 
  whitish 
  and 
  denticulate 
  

   on 
  the 
  edge, 
  about 
  equal 
  in 
  length 
  to 
  the 
  thickness 
  of 
  the 
  flesh 
  

   of 
  the 
  pileus, 
  dark 
  ferruginous 
  with 
  a 
  whitish 
  or 
  silvery 
  reflec- 
  

   tion. 
  

  

  Dead 
  trunks 
  of 
  spruce 
  trees. 
  Adirondack 
  Mts. 
  Also 
  at 
  the 
  

   base 
  of 
  pine 
  trunks. 
  West 
  Albany. 
  August 
  and 
  September. 
  

  

  The 
  species 
  is 
  remarkable 
  for 
  the 
  twofold 
  character 
  of 
  the 
  

   substance 
  of 
  the 
  pileus, 
  the 
  upper 
  half 
  being 
  of 
  a 
  soft 
  tomentose 
  

   nature, 
  velvety 
  to 
  the 
  touch 
  and 
  readily 
  impressed 
  by 
  the 
  finger 
  

   nail, 
  the 
  lower 
  half 
  of 
  a 
  much 
  firmer 
  fibrous 
  texture, 
  smooth 
  

   and 
  subsuming 
  when 
  cut 
  or 
  fractured. 
  The 
  plants 
  are 
  quite 
  

   variable 
  in 
  size, 
  shape 
  and 
  thickness 
  of 
  the 
  margin 
  which 
  in 
  

   some 
  is 
  quite 
  thin, 
  in 
  others 
  very 
  obtuse 
  In 
  the 
  latter 
  the 
  

   pores 
  near 
  the 
  margin 
  are 
  often 
  much 
  enlarged 
  or 
  elongated 
  

   so 
  that 
  the 
  dissepiments 
  appear 
  like 
  lamellae. 
  The 
  species 
  is 
  

   related 
  to 
  P. 
  cuticularis 
  Fr., 
  but 
  I 
  have 
  not 
  found 
  it 
  with 
  any 
  

   appearance 
  of 
  a 
  cuticle 
  nor 
  of 
  a 
  blackish 
  color, 
  nor 
  with 
  a 
  fim- 
  

   briated 
  margin 
  — 
  characters 
  said 
  to 
  belong 
  to 
  that 
  species. 
  

   Besides, 
  that 
  species 
  is 
  attributed 
  to 
  deciduous 
  trees 
  while 
  our 
  

   plant 
  has 
  thus 
  far 
  occurred 
  on 
  coniferous 
  trees 
  only. 
  

  

  