﻿42 
  Thirtieth 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  Agaricus 
  (Psilocybe) 
  limophilus 
  n. 
  sp. 
  

  

  Pileus 
  thin, 
  convex, 
  then 
  expanded, 
  fragile, 
  atomaceons, 
  

   radiately 
  rugnlose, 
  whitish, 
  often 
  splitting 
  on 
  the 
  margin 
  and 
  

   sometimes 
  cracking 
  into 
  areas 
  ; 
  lamellae 
  rather 
  broad, 
  loose, 
  

   whitish 
  or 
  pallid, 
  then 
  purplish 
  brown 
  ; 
  stem 
  equal, 
  striate 
  and 
  

   slightly 
  mealy 
  at 
  the 
  top, 
  hollow, 
  short, 
  white 
  ; 
  spores 
  ellip- 
  

   tical, 
  .0004'-. 
  0005' 
  long, 
  .0002'-. 
  00025' 
  broad. 
  

  

  Muddy 
  alluvial 
  soil 
  under 
  willows. 
  Green 
  Island. 
  Sep- 
  

   tember. 
  

  

  It 
  is 
  related 
  to 
  A. 
  incertus 
  Pk., 
  but 
  the 
  veil 
  is 
  less 
  developed, 
  

   the 
  lamellae 
  are 
  more 
  distant 
  and 
  the 
  spores 
  are 
  larger. 
  

  

  Agaricus 
  (Psilocybe) 
  arenulinus 
  n. 
  sp. 
  

  

  Pileus 
  convex, 
  then 
  expanded, 
  plane 
  or 
  centrally 
  depressed, 
  

   glabrous, 
  hygrophanous, 
  dark 
  livid-brown 
  and 
  coarsely 
  stri- 
  

   atulate 
  when 
  moist, 
  livid- 
  white 
  when 
  dry 
  ; 
  lamellae 
  close, 
  cin- 
  

   namon-brown, 
  becoming 
  darker 
  with 
  age 
  ; 
  stem 
  slightly 
  taper- 
  

   ing 
  upward, 
  hollow, 
  whitish; 
  spores 
  subelliptical, 
  .0004' 
  long. 
  

  

  Plant 
  1.5-2.5' 
  high, 
  pileus 
  6'-16' 
  broad, 
  stem 
  1" 
  thick. 
  

  

  Sandy 
  soil. 
  West 
  Albany. 
  September. 
  

  

  When 
  moist 
  the 
  pileus 
  has 
  a 
  peculiar 
  radiate 
  appearance 
  as 
  

   if 
  distantly 
  striate. 
  Large 
  individuals 
  have 
  the 
  margin 
  of 
  the 
  

   pileus 
  uneven 
  and 
  irregularly 
  striate. 
  A 
  mass 
  of 
  sand 
  usually 
  

   adheres 
  to 
  the 
  base 
  of 
  the 
  stem. 
  

  

  Agaricus 
  (Psathyra) 
  polytrichophilus 
  n. 
  sp. 
  

  

  Pileus 
  thin, 
  convex 
  or 
  subcampanulate, 
  glabrous 
  rather 
  

   fragile, 
  sometimes 
  with 
  a 
  slight 
  umbo, 
  hygrophanous, 
  striatu- 
  

   late 
  and 
  brown 
  when 
  moist, 
  dull 
  ochraceous 
  or 
  buff 
  when 
  dry, 
  

   somewhat 
  shining 
  ; 
  lamellae 
  plane 
  and 
  adnate 
  or 
  slightly 
  arcu- 
  

   ate 
  and 
  decurrent, 
  broad, 
  subdistant, 
  colored 
  almost 
  like 
  the 
  

   pileus 
  ; 
  stem 
  slender, 
  equal, 
  subflexuous, 
  slightly 
  whitish- 
  

   fibrillose, 
  especially 
  toward 
  the 
  base, 
  mealy 
  at 
  the 
  top, 
  concol- 
  

   orous, 
  containing 
  a 
  whitish 
  pith; 
  spores 
  purple-brown, 
  subel- 
  

   liptical, 
  .0003' 
  long, 
  .0002' 
  broad. 
  

  

  Plant 
  gregarious, 
  odorous, 
  1-2' 
  high, 
  pileus 
  2"-5" 
  broad. 
  

  

  Ground 
  among 
  Polytrichum. 
  Oneida. 
  Warne. 
  West 
  Albany. 
  

   May. 
  

  

  Agaricus 
  (Psathyrella) 
  graciloides 
  n. 
  sp. 
  (Plate 
  1, 
  figs. 
  

  

  1-4.) 
  

  

  Pileus 
  thin, 
  conical 
  or 
  campanulate, 
  glabrous, 
  hygrophanous, 
  

   brown 
  and 
  striatulate 
  when 
  moist, 
  whitish 
  and 
  subrugulose 
  

  

  