﻿I3C> 
  BOTANICAL 
  GAZETTE. 
  [Jl^l^^J 
  

  

  usually 
  in 
  cushion-like 
  tufts 
  of 
  small 
  extent, 
  prevalent 
  in 
  

   swamps 
  of 
  birch 
  and 
  alder 
  intermixed 
  with 
  pines, 
  on 
  the 
  

   borders 
  of 
  forests, 
  into 
  the 
  depths 
  of 
  which 
  it 
  seldom 
  pene- 
  

   trates^ 
  and 
  preferring 
  the 
  comparatively 
  dry 
  situations. 
  

   Of 
  a 
  spike-like 
  habit, 
  uniformly 
  branched 
  throughout 
  the 
  

   whole 
  length, 
  the 
  coma 
  not 
  broader 
  than 
  the 
  rest 
  of 
  the 
  

   plant, 
  comal 
  branches 
  usually 
  penicellate-radiate. 
  Homalo-, 
  

  

  J 
  

  

  ano-, 
  ortho-, 
  and 
  drepanocladous. 
  Pale 
  green, 
  grayish 
  green 
  

   often 
  yellowish 
  green 
  to 
  yellow-brownish, 
  rarely 
  vivid 
  green. 
  

   S 
  branches 
  not 
  clavate-thickened, 
  rusty 
  yellow. 
  Stem 
  leaves 
  

   of 
  medium 
  size 
  to 
  small, 
  rarely 
  over 
  medium 
  size 
  to 
  almost 
  

   large, 
  mesophyllous, 
  sometimes 
  raacrophyllous 
  (length 
  nearly 
  

   twice 
  the 
  breadth) 
  ; 
  apex 
  usually 
  broad-truncate 
  and 
  fringed 
  ; 
  

  

  for 
  the 
  most 
  part 
  with 
  pseudo-fibres. 
  As 
  vet 
  unknown 
  in 
  

   fruit. 
  

  

  Mt. 
  Washington, 
  N. 
  H., 
  5,000 
  ft. 
  {Faxon). 
  

  

  Var. 
  molle 
  Russ. 
  in 
  Warnst. 
  Samml. 
  EuroD. 
  Torfm. 
  Se- 
  

   ries 
  II, 
  no. 
  115 
  (1890). 
  Plants 
  5-15 
  cm. 
  long 
  and 
  more, 
  soft 
  

   and 
  delicate, 
  bright- 
  to 
  rather 
  duskv-green, 
  sporting 
  into 
  

   yellowish 
  and 
  brownish 
  tints 
  to 
  dusky 
  brown-vellow, 
  also 
  

   bluish- 
  or 
  grass-green, 
  below 
  darker 
  colored 
  ; 
  meso- 
  to 
  ma- 
  

   crocladous, 
  usually 
  drepanocladous, 
  also 
  homalo- 
  and 
  cato- 
  

   cladous, 
  eury-and 
  dasycladous 
  ; 
  forming 
  rather 
  extensive 
  

   tufts 
  m 
  low 
  wet 
  grassy 
  places 
  in 
  alder 
  and 
  birch 
  swamps. 
  

   btem 
  leaves 
  of 
  medium 
  size 
  to 
  small, 
  mesophyllous 
  to 
  nar- 
  

   row-mesophyllous 
  ; 
  often 
  with 
  pseudo-fibres 
  ; 
  "'hemiisophyl- 
  

   lous 
  forms 
  are 
  not 
  rare 
  ; 
  sometimes 
  there 
  are 
  transitions 
  to 
  

   s 
  tacky 
  odes 
  and 
  leftostachys. 
  

  

  New 
  Hampshire, 
  Profile 
  Lake, 
  Franconia, 
  2,000 
  ft. 
  

   \raxon). 
  

  

  B. 
  Stem 
  leaves 
  nozvhere 
  with 
  comfletely 
  resorbed 
  cell-meW- 
  

  

  ejore 
  usually 
  dentate 
  at 
  the 
  af 
  

  

  a. 
  Stem 
  leaves 
  slightly 
  or 
  not 
  all 
  narrowed 
  upward, 
  with 
  rounded 
  

   often 
  cucuUate 
  apex, 
  which 
  is 
  sometimes 
  delicately 
  fimbriate, 
  

   Imguiform, 
  the 
  broad 
  border 
  much 
  widened 
  downward. 
  

  

  a. 
  Stem 
  leaves 
  large, 
  broad-Iinguiform, 
  usually 
  wholly 
  destitue 
  of 
  

   hbres 
  and 
  pores, 
  only 
  in 
  the 
  middle 
  of 
  the 
  apex 
  dentate 
  or 
  

   shghtly 
  fimbriate, 
  hyaline 
  cells 
  in 
  the 
  upper 
  part 
  of 
  the 
  lea' 
  

   rnombic 
  with 
  numerous 
  membrane-plaits 
  ; 
  not 
  every 
  one 
  of 
  tne 
  

   superficial 
  cells 
  of 
  the 
  stem 
  cuticle 
  with 
  one 
  pore 
  ; 
  pores 
  without 
  

   rings; 
  usually 
  dioicous 
  rarely 
  monoicous, 
  $ 
  branches 
  red. 
  

  

  8yn. 
  : 
  5. 
  acutifdium, 
  var. 
  robx'Mum 
  Euss. 
  Beitrage, 
  p. 
  39 
  (I860) 
  

  

  