﻿NEW 
  YOEK 
  SPECIES 
  OF 
  VISCID 
  BOLETI. 
  

  

  BOLETUS 
  Dill. 
  

  

  Hymenium 
  composed 
  of 
  separable 
  tubes 
  crowded 
  into 
  a 
  porous 
  

   stratum, 
  without 
  a 
  trama, 
  distinct 
  and 
  easily 
  separable 
  from 
  the 
  

   hymenophore. 
  Mouths 
  of 
  the 
  tubes 
  either 
  porous, 
  round 
  or 
  angular 
  ; 
  

   spores 
  normally 
  fusiform, 
  rarely 
  oval 
  or 
  subrotnnd. 
  Terrestrial, 
  fleshy, 
  

   putrescent, 
  centrally 
  stipitate 
  fungi. 
  Many 
  of 
  them 
  valuable 
  for 
  their 
  

   edible 
  qualities, 
  a 
  few 
  poisonous. 
  Hym. 
  Europ., 
  p. 
  495. 
  

  

  This 
  genus 
  is 
  related 
  to 
  Paxillus 
  on 
  one 
  hand 
  and 
  to 
  Polyporus 
  on 
  

   the 
  other. 
  It 
  is 
  more 
  accurately 
  limited 
  than 
  many 
  others, 
  but 
  its 
  

   species 
  are 
  numerous 
  and 
  less 
  clearly 
  defined. 
  Some 
  are 
  very 
  vari- 
  

   able, 
  others 
  are 
  too 
  closely 
  allied 
  to 
  be 
  readily 
  distinguished. 
  Fries 
  

   remarks 
  that 
  " 
  no 
  genus 
  has 
  given 
  me 
  more 
  trouble 
  than 
  that 
  of 
  the 
  

   Boleti." 
  The 
  difficulty 
  is 
  apparently 
  clue 
  to 
  the 
  imperfect 
  descrip- 
  

   tions 
  given 
  by 
  some 
  authors 
  and 
  to 
  the 
  variability 
  of 
  some 
  species 
  

   whose 
  limits 
  have 
  not 
  been 
  well 
  ascertained. 
  

  

  Most 
  of 
  the 
  Boleti 
  grow 
  in 
  the 
  warmest 
  part 
  of 
  the 
  season, 
  and 
  

   especially 
  in 
  very 
  warm 
  showery 
  weather. 
  They 
  are 
  scarce 
  in 
  dry 
  

   weather. 
  Some 
  species 
  attain 
  a 
  very 
  large 
  size, 
  others 
  exhibit 
  a 
  

   singular 
  change 
  of 
  color 
  in 
  their 
  tubes 
  or 
  flesh 
  when 
  cut 
  or 
  bruised. 
  

   They 
  are 
  described 
  as 
  terrestrial, 
  yet 
  a 
  few 
  species 
  sometimes 
  occur 
  

   also 
  on 
  much 
  decayed 
  wood. 
  

  

  The 
  spores 
  vary 
  in 
  color 
  in 
  different 
  species, 
  but 
  this 
  variation 
  

   occurs 
  in 
  closely 
  related 
  species, 
  so 
  that 
  it 
  is 
  not 
  deemed 
  available 
  for 
  

   classifying 
  in 
  series 
  as 
  in 
  the 
  genus 
  Agaricus. 
  It 
  is, 
  however, 
  valu- 
  

   able 
  as 
  a 
  specific 
  character 
  and 
  should 
  always 
  be 
  noted. 
  Fries 
  has 
  

   taken 
  the 
  primary 
  color 
  of 
  the 
  tubes 
  as 
  the 
  distinguishing 
  character 
  

   of 
  the 
  series, 
  but 
  the 
  same 
  objection 
  holds 
  in 
  this 
  case 
  as 
  in 
  the 
  

   other. 
  

  

  New 
  York 
  is 
  rich 
  in 
  species 
  of 
  this 
  genus. 
  Two 
  sections, 
  Laceri- 
  

   pedes 
  Pk. 
  (Torr. 
  Bull. 
  1883, 
  p. 
  73) 
  and 
  Hirtipelles 
  Pk. 
  (in. 
  ed.) 
  

   are 
  represented, 
  of 
  which 
  no 
  examples 
  appear 
  to 
  have 
  occurred 
  in 
  

   Europe. 
  We 
  attempt 
  here 
  an 
  exposition 
  of 
  the 
  species 
  of 
  the 
  Vis- 
  

   cipelles, 
  the 
  first 
  section 
  in 
  the 
  Friesian 
  arrangement. 
  

  

  