﻿J 
  

  

  189O.J 
  BOTANICAL 
  GAZETTE. 
  253 
  

  

  central 
  and 
  completely 
  enclosed 
  on 
  both 
  sides 
  by 
  the 
  biplane 
  

   hyaline 
  cells. 
  In 
  plants 
  with 
  loosely 
  spreading 
  leaves 
  the 
  

   chlorophyllose 
  cells 
  in 
  the 
  apical 
  part 
  of 
  the 
  leaf 
  are 
  free 
  on 
  

   both 
  sides, 
  although 
  central. 
  Inner 
  walls 
  of 
  the 
  hj^ahne 
  cells, 
  

   so 
  far 
  as 
  they 
  are 
  united 
  to 
  the 
  green 
  c&Ws, 
  smooth 
  orfapillose. 
  

   Upper 
  perichastial 
  leaves 
  with 
  a 
  prolonged 
  rounded 
  point, 
  in 
  

   the 
  upper 
  half 
  with 
  fibrils 
  and 
  a 
  few 
  pores 
  ; 
  above 
  fimbriate 
  

   all 
  around. 
  Spores 
  0.024 
  ^o 
  0.028 
  mm. 
  diam. 
  in 
  mass 
  rust- 
  

   colored, 
  minutely 
  punctate. 
  

  

  In 
  Rev. 
  des 
  Sphaignes, 
  p. 
  5, 
  Cardot 
  pronounces 
  S. 
  ery- 
  

   throcalyx 
  Hampe 
  to 
  be 
  a 
  form 
  of 
  S. 
  fapillosum 
  Lindb., 
  to 
  

   which, 
  however, 
  the 
  plant 
  can 
  not 
  belong, 
  by 
  reason 
  of 
  the 
  

   central, 
  elliptical 
  chlorophyllose 
  cells, 
  enclosed 
  on 
  both 
  sides 
  

   by 
  the 
  biplane 
  hyaline 
  cells, 
  wherefore 
  it 
  must 
  be 
  reckoned 
  

   among 
  the 
  forms 
  of 
  S. 
  medium. 
  In 
  the 
  European 
  forms 
  the 
  

   cortical 
  cells 
  of 
  the 
  stem 
  are 
  always 
  furnished 
  with 
  slightly 
  

   developed, 
  very 
  slender 
  fibrils, 
  but 
  in 
  the 
  tropical 
  forms, 
  

   such 
  as 
  S. 
  erythrocalyx, 
  S. 
  Hahnianum, 
  S. 
  Peruvianum,etc., 
  

   the 
  fibrils 
  are 
  entirely 
  w^anting 
  in 
  the 
  cells 
  of 
  the 
  stem 
  cortex 
  ; 
  

   indeed, 
  I 
  have 
  seen 
  forms 
  in 
  which 
  the 
  formation 
  of 
  fibrils, 
  

   even 
  in 
  the 
  cortical 
  cells 
  of 
  the 
  stronger 
  spreading 
  branches, 
  

   has 
  nearly 
  or 
  wholly 
  ceased, 
  so 
  that 
  one 
  finds 
  distinctly 
  de- 
  

   veloped 
  fibrils 
  in 
  the 
  cortical 
  cells 
  of 
  the 
  pendent 
  branches 
  

   only. 
  Furthermore, 
  all 
  the 
  known 
  European 
  forms 
  of 
  S. 
  

   medium 
  have 
  smooth 
  inner 
  walls 
  of 
  the 
  hyaline 
  cells 
  of 
  the 
  

   branch 
  leaves, 
  while 
  tropical 
  forms 
  sometimes 
  exhibit 
  an 
  

   abundance 
  of 
  well 
  developed 
  papillae 
  ; 
  this 
  is, 
  for 
  example, 
  

   the 
  case 
  in 
  S. 
  erythrocalyx 
  Hpe. 
  from 
  Brazil. 
  I 
  have 
  not 
  yet 
  

   "let 
  with 
  forms 
  in 
  which 
  the 
  development 
  of 
  the 
  papiHas 
  has 
  

   been 
  very 
  feeble, 
  irregular, 
  and 
  therefore 
  indistinct, 
  but 
  I 
  do 
  

   JJpt 
  tor 
  a 
  moment 
  doubt 
  that 
  they 
  will 
  yet 
  be 
  found 
  m 
  S. 
  me- 
  

   «'um, 
  as 
  already 
  they 
  have 
  been 
  in 
  S. 
  cymbifolium. 
  1 
  here 
  

   "^ay 
  be 
  distinguished, 
  therefore, 
  in 
  S. 
  medium, 
  with 
  respect 
  

   to 
  the 
  development 
  of 
  the 
  papillae 
  in 
  the 
  branch 
  leaves, 
  two 
  

   P'-incipal 
  series 
  of 
  forms: 
  i. 
  var. 
  Iceve, 
  and 
  2. 
  var. 
  fafU- 
  

   losum; 
  in 
  the 
  former 
  all 
  the 
  European 
  and 
  North 
  American 
  

   species 
  will 
  be 
  counted, 
  in 
  the 
  latter 
  S. 
  erythrocalyx 
  lUmpe. 
  

  

  var. 
  lave 
  t. 
  -purfurascens 
  (Russ.). 
  Tufts, 
  especially 
  the 
  

   heads, 
  purple 
  to 
  videt-red, 
  below 
  pale 
  or 
  darker 
  brownish, 
  

  

  not 
  variegated 
  wnth 
  red 
  and 
  green. 
  

  

  . 
  ^. 
  H., 
  Lisbon, 
  1,000 
  ft. 
  ; 
  Mass., 
  Boston 
  and 
  Dedham, 
  100 
  

  

  ''■ 
  \raxon). 
  

  

  , 
  ^- 
  versicolor 
  Warnst. 
  Tufts, 
  as 
  to 
  the 
  heads, 
  more 
  or 
  

  

  J^^^s 
  --ed, 
  below 
  green, 
  at 
  the 
  bottom 
  yellowish 
  or 
  whitish, 
  

   refore 
  of 
  two 
  or 
  three 
  colors. 
  

  

  