﻿f 
  

  

  I 
  

  

  134 
  BOTAMCAL 
  GAZETTE. 
  [June, 
  

  

  Fascicles 
  consisting 
  of 
  3 
  or 
  4 
  branchlets, 
  of 
  -which 
  the 
  

   stouter 
  are 
  sometimes 
  long 
  and 
  much 
  attenuated 
  to 
  the 
  apex, 
  

   sometimes 
  shorter 
  and 
  abruptly 
  pointed. 
  Branches 
  distant, 
  

   or 
  closer, 
  or 
  crowded, 
  either 
  falcateh^ 
  bent 
  downward, 
  hori- 
  

   zontally 
  spreading, 
  curved 
  upward, 
  or 
  strictly 
  erect. 
  

  

  Branch 
  leaves 
  small, 
  nearly 
  lustreless 
  when 
  drj-, 
  densely 
  

   or 
  loosely 
  imbricated, 
  from 
  an 
  ovate 
  base 
  extending 
  to 
  a 
  

   comparatively 
  short, 
  round-truncate, 
  dentate, 
  involute 
  tip; 
  

   bordered 
  by 
  3 
  or 
  4 
  rows 
  of 
  narrow 
  cells 
  ; 
  a 
  plait 
  in 
  the 
  

   middle 
  near 
  the 
  base. 
  HyaHne 
  cells 
  on 
  the 
  inner 
  side 
  of 
  the 
  

   leaf, 
  in 
  the 
  upper 
  part, 
  with 
  numerous 
  usually 
  ringless 
  pores, 
  

   especially 
  in 
  the 
  upper 
  and 
  lower 
  cell 
  angles 
  ; 
  in 
  the 
  vicinity 
  

   of 
  the 
  lateral 
  margins 
  of 
  the 
  leaf 
  as 
  well 
  as 
  directly 
  over 
  the 
  

   base 
  the 
  pores 
  are 
  in 
  the 
  middle 
  of 
  the 
  cell- 
  wall, 
  between 
  

   the 
  fibrils. 
  On 
  the 
  whole 
  outer 
  side 
  of 
  the 
  leaf 
  the 
  hyaline 
  

   cells 
  have 
  numerous 
  apertures 
  which, 
  at 
  the 
  apex 
  of 
  the 
  

   cell, 
  are 
  small 
  and 
  strong-ringed, 
  and 
  below 
  become 
  

   gradually 
  larger 
  and 
  weaker- 
  ringed. 
  In 
  the 
  lowest 
  part 
  

   they 
  are 
  very 
  large 
  and 
  without 
  rings, 
  and 
  are 
  situated 
  in 
  the 
  

   middle 
  of 
  the 
  cell 
  wall 
  between 
  the 
  fibrils, 
  while 
  the 
  rest 
  are 
  

   on 
  the 
  commissures. 
  Near 
  the 
  edges 
  the 
  pores 
  on 
  the 
  two 
  

   sides 
  of 
  the 
  leaf 
  are 
  partly 
  opposite 
  each 
  other, 
  so 
  that 
  at 
  

  

  these 
  points 
  more 
  or 
  less 
  complete 
  perforations 
  of 
  the 
  leat 
  

   occur. 
  

  

  Chlorophyllose 
  cells 
  in 
  cross-section 
  triancrular 
  to 
  isosceles- 
  

   trapeziform, 
  placed 
  between 
  the 
  hvaline 
  cells 
  on 
  the 
  inner 
  side 
  

   ot 
  the 
  leaf 
  and 
  always 
  free 
  ; 
  on 
  the 
  outer 
  side, 
  sometimes 
  

   enclosed, 
  sometimes 
  free, 
  and 
  here 
  the 
  hvaline 
  cells 
  are 
  

   more 
  convex. 
  

  

  Dioicous; 
  ^ 
  branches 
  verv 
  similar 
  to 
  the 
  sterile, 
  slightly 
  

   01 
  not 
  at 
  all 
  thickened 
  in 
  the"' 
  antheridium-bearing 
  portion, 
  

   here 
  always 
  yellowish 
  brown, 
  after 
  flowering 
  lengthening 
  at 
  

   the 
  tips; 
  perigonial 
  leaves 
  very 
  small, 
  sharply 
  contrasted 
  to 
  

  

  he 
  ower 
  sterile 
  leaves 
  of 
  the 
  male 
  branch, 
  broad-oval, 
  den- 
  

   culate 
  at 
  the 
  rounded 
  apex. 
  Pore 
  structure 
  like 
  that 
  of 
  

  

  he 
  other 
  branch 
  leaves, 
  the 
  lower 
  half 
  or 
  two-thirds 
  (rarely 
  

   the 
  whole 
  leaf), 
  without 
  fibrils 
  and 
  pores. 
  Fertile 
  branches 
  

   "nntJ 
  .T' 
  ^^^"'^^'-^^''^1 
  leaves 
  large, 
  ovate, 
  slightly 
  emar- 
  

   fZTl-Ty. 
  Y 
  '"^""f 
  "^ 
  ''^P^-^' 
  b^-oadly 
  bordered, 
  in 
  the 
  lower 
  

   hivLr 
  ^^^"g^J^t' 
  Rectangular, 
  pitted 
  chlorophvUose 
  cells 
  

   o£l\.7 
  '"^''^ 
  b°th 
  kinds 
  of 
  cells 
  of 
  which 
  the 
  hyaline 
  are 
  

   ^nd 
  nt\ 
  ' 
  *'"'^- 
  .^'^^^^d 
  bv 
  obliquely 
  transverse 
  walls, 
  

   wavs 
  w 
  ^ifn'T'^l'-? 
  '^ 
  ^?^''^^^'' 
  ^hort 
  chlo/ophyllose 
  cells 
  ; 
  /- 
  

   veliovv 
  I 
  w"^' 
  ''^"^ 
  P°''^«- 
  Fruit 
  rare 
  ; 
  spores 
  golden 
  

   }ellow, 
  gianulate 
  or 
  nearly 
  smooth, 
  0.025-0 
  030 
  mm. 
  diam- 
  

  

  