﻿86 
  Twenty-eighth 
  Report 
  02* 
  the 
  State 
  Museum. 
  

  

  The 
  spores 
  are 
  a 
  little 
  larger 
  than 
  in 
  the 
  form 
  fonnd 
  on 
  

   H. 
  alba. 
  It 
  is 
  probably 
  £71 
  Montagnei 
  var. 
  major 
  Desm. 
  

  

  Phragmiditjm 
  mucronatum 
  Lie. 
  

  

  The 
  typical 
  form 
  ocenrs 
  on 
  rose 
  leaves 
  in 
  Oneida. 
  Warne. 
  

  

  American 
  specimens 
  generally 
  have 
  the 
  spores 
  more 
  

   opaque 
  and 
  with 
  two 
  or 
  three 
  more 
  septa 
  than 
  the 
  typical 
  

   form. 
  This 
  variant 
  form 
  might 
  be 
  called 
  var. 
  Americanum. 
  

  

  Peridermitjm 
  elattnum 
  A. 
  & 
  S. 
  

  

  Glens 
  Falls. 
  Mrs. 
  Millington. 
  Also 
  in 
  Stony 
  Clove, 
  

   Catskill 
  monntains. 
  Thus 
  far 
  we 
  have 
  seen 
  it 
  on 
  the 
  leaves 
  

   of 
  the 
  balsam 
  only, 
  and 
  several 
  interesting 
  and 
  peculiar 
  

   features 
  are 
  indicated. 
  Unlike 
  our 
  other 
  species 
  this 
  one 
  

   attacks 
  all 
  the 
  leaves 
  on 
  an 
  affected 
  branch. 
  These 
  have 
  a 
  

   sickly 
  yellowish 
  hue, 
  stand 
  out 
  on 
  all 
  sides 
  of 
  the 
  branch 
  

   and 
  do 
  not 
  attain 
  more 
  than 
  half 
  their 
  usual 
  size. 
  They 
  

   fall 
  off 
  each 
  year 
  so 
  that 
  leaves 
  are 
  found 
  only 
  on 
  the 
  ter- 
  

   minal 
  shoots 
  of 
  the 
  affected 
  branches, 
  the 
  internodes 
  of 
  the 
  

   previous 
  years 
  being 
  entirely 
  destitute 
  of 
  foliage. 
  The 
  fun- 
  

   gus 
  therefore 
  appears 
  in 
  reality 
  to 
  be 
  perennial, 
  for 
  having 
  

   once 
  attacked 
  a 
  branch 
  it 
  reappears 
  year 
  after 
  year 
  on 
  the 
  

   successive 
  crops 
  of 
  leaves, 
  apparently 
  loosening 
  its 
  vampire- 
  

   like 
  hold 
  only 
  upon 
  the 
  death 
  of 
  the 
  branch. 
  Fortunately 
  

   it 
  spreads 
  only 
  outwardly 
  or 
  in 
  the 
  direction 
  of 
  growth. 
  

   Hence 
  all 
  the 
  affected 
  branches 
  of 
  a 
  tree 
  if 
  traced 
  back 
  will 
  

   be 
  found 
  to 
  have 
  a 
  common 
  origin 
  and 
  at 
  this 
  common 
  start- 
  

   ing 
  point 
  there 
  is 
  usually 
  a 
  swollen 
  or 
  seemingly 
  injured 
  

   place 
  in 
  the 
  main 
  branch. 
  From 
  this 
  point 
  the 
  ramification 
  

   becomes 
  excessive 
  and 
  crowded, 
  exactly 
  similar 
  to 
  that 
  so 
  

   often 
  seen 
  in 
  spruce 
  trees 
  when 
  attacked 
  by 
  Arceuthobium 
  

   pusillum. 
  All 
  the 
  branches 
  given 
  off 
  below 
  this 
  point 
  are 
  

   unaffected, 
  all 
  given 
  off 
  above 
  it 
  are 
  affected. 
  Whether 
  the 
  

   fungus 
  originates 
  this 
  affected 
  point 
  in 
  the 
  branch 
  or 
  not 
  is 
  

   yet 
  a 
  question, 
  also 
  how 
  long 
  an 
  affected 
  branch 
  will 
  con- 
  

   tinue 
  to 
  live 
  and 
  support 
  its 
  parasite 
  and 
  whether 
  by 
  the 
  

   application 
  of 
  sulphur 
  or 
  any 
  other 
  antidote 
  the 
  fungus 
  

   may 
  be 
  killed 
  and 
  the 
  life 
  of 
  the 
  branch 
  preserved. 
  An 
  

   obvious 
  remedy 
  would 
  be 
  to 
  cut 
  off 
  the 
  branch 
  below 
  the 
  

   affected 
  point. 
  

  

  MoRCHELLA 
  ESCTJLENTA 
  Fr. 
  

  

  This 
  species, 
  with 
  us 
  as 
  in 
  Europe, 
  is 
  quite 
  variable. 
  The 
  

   most 
  common 
  form 
  about 
  Albany 
  is 
  whitish 
  or 
  pallid 
  

   throughout 
  and 
  answers 
  to 
  the 
  variety 
  rotunda 
  except 
  in 
  

   the 
  form 
  of 
  the 
  pileus 
  which 
  is 
  obtusely 
  conical 
  rather 
  than 
  

   Tounded. 
  Whenever 
  I 
  have 
  met 
  with 
  this 
  form 
  it 
  has 
  been 
  

   under 
  or 
  in 
  the 
  vicinity 
  of 
  pine 
  trees. 
  Another 
  form 
  has 
  

  

  