﻿54 
  Twenty-eighth 
  Eeport 
  02* 
  the 
  State 
  Museum. 
  

  

  iETHALIUM 
  GEOPHILUM 
  71. 
  Sp. 
  

  

  Effused 
  in 
  small 
  irregular 
  masses, 
  whitish 
  or 
  yellowish, 
  

   sometimes 
  with 
  a 
  slight 
  pinkish 
  tinge 
  ; 
  spores 
  globose, 
  

   colorless, 
  .00016'-.0002 
  / 
  in 
  diameter. 
  

  

  Damp 
  ground 
  in 
  woods. 
  Sageville. 
  August. 
  

   The 
  small 
  size 
  and 
  colorless 
  spores 
  furnish 
  the 
  distinguish- 
  

   ing 
  characters 
  of 
  this 
  species. 
  

  

  DlDERMA 
  FLAVIDUM 
  71. 
  Sp. 
  

  

  Csespitose, 
  small, 
  external 
  peridium 
  thick, 
  pale 
  yellow 
  or 
  

   lemon 
  color 
  outwardly, 
  white 
  within, 
  rupturing 
  irregularly, 
  

   inner 
  peridium 
  delicate 
  ; 
  flocci 
  white 
  ; 
  spores 
  black, 
  globose, 
  

   minutely 
  rough, 
  .0005' 
  in 
  diameter. 
  

  

  Among 
  moss 
  on 
  decaying 
  wood. 
  Lake 
  Pleasant. 
  August. 
  

  

  DlDYMIUM 
  OXALINUM 
  71. 
  Sp. 
  

  

  Small, 
  sessile, 
  scattered 
  or 
  crowded, 
  subglobose 
  or 
  elon- 
  

   gated 
  and 
  somewhat 
  confluent, 
  plumbeus 
  ; 
  peridium 
  thin, 
  

   clothed 
  with 
  a 
  minute 
  whitish 
  mealiness, 
  whitish 
  when 
  

   evacuated, 
  tawny 
  or 
  reddish-brown 
  within 
  at 
  the 
  base 
  ; 
  col- 
  

   umella 
  white, 
  subglobose 
  ; 
  flocci 
  slender, 
  colored 
  ; 
  spores 
  

   globose, 
  blackish-brown, 
  with 
  a 
  purplish 
  tinge, 
  .00033- 
  

   .00035' 
  in 
  diameter. 
  

  

  Living 
  leaves 
  and 
  petioles 
  of 
  wood 
  sorrel, 
  Oxalis 
  Aceto- 
  

   sella. 
  Williamstown, 
  Oswego 
  county. 
  July. 
  

  

  DlDYMIUM 
  SUBROSEUM 
  71. 
  Sp. 
  

  

  Peridium 
  subglobose, 
  externally 
  farinaceous, 
  pinkish- 
  

   white 
  ; 
  stem 
  short, 
  white, 
  equal 
  or 
  slightly 
  tapering 
  upward 
  ; 
  

   flocci 
  white 
  ; 
  spores 
  globose, 
  smooth, 
  purplish-black, 
  00033' 
  

   in 
  diameter. 
  

  

  Bark 
  of 
  butternut 
  trees, 
  Juglans 
  cinerea. 
  Williamstown. 
  

   July 
  

  

  DlDYMIUM 
  FLAVIDUM 
  71. 
  Sp. 
  

  

  Peridium 
  subglobose, 
  sessile, 
  thin, 
  yellow, 
  clothed 
  with 
  

   a 
  minute 
  yellow 
  mealiness 
  ; 
  spores 
  subglobose, 
  black, 
  .0004/ 
  

   in 
  diameter. 
  

  

  Bark 
  of 
  dead 
  balsam 
  trees, 
  Abies 
  balsamea. 
  North 
  Elba 
  

   August. 
  

  

  DlCTYDIUM 
  UMBILICATUM 
  Sc7lTad. 
  

  

  Decaying 
  wood. 
  North 
  Greenbush. 
  June. 
  

  

  