﻿40 
  BOTANICAL 
  GAZETTE. 
  [ 
  February, 
  

  

  This 
  mobS, 
  belonging 
  to 
  the 
  group 
  of 
  D. 
  scoparium, 
  is 
  

   characterized 
  by 
  its 
  very 
  narrow 
  capsule, 
  not 
  sulcate 
  when 
  

   empty 
  and 
  its 
  perichgetial 
  bracts 
  often 
  emarginate, 
  some- 
  

   times 
  muticous 
  or 
  with 
  a 
  shorter 
  subula 
  than 
  in 
  D. 
  scop- 
  

   arium. 
  

  

  Fissidens 
  obiusifolius 
  Wils. 
  var. 
  Kansanns. 
  — 
  Differs 
  from 
  

   the 
  typical 
  form 
  in 
  its 
  leaves 
  with 
  a 
  broad 
  border 
  of 
  elon- 
  

   gated 
  cells 
  on 
  the 
  margins 
  of 
  the 
  vaginant 
  lamina, 
  and 
  a 
  

   narrow, 
  more 
  or 
  less 
  distinct 
  border 
  on 
  the 
  dorsal 
  wing. 
  

  

  "^osefh 
  Henry). 
  

  

  Didymodou 
  Hendersoni.— 
  In 
  compact 
  tufts, 
  yellowish 
  above, 
  

   ferrugmous 
  below. 
  Stems 
  erect, 
  branched, 
  1-2 
  cm. 
  long. 
  

   Leaves 
  crowded, 
  patulous 
  when 
  moist, 
  subincurved, 
  erect- 
  

   imbricate 
  in 
  dry 
  state, 
  ovate- 
  or 
  oblong-lanceolate, 
  entire, 
  

   •75-1-25 
  mm. 
  long, 
  .35-50 
  mm. 
  broad 
  ; 
  apex 
  rounded-obtuse 
  

   or 
  minutely 
  apiculate 
  or 
  subacute 
  ; 
  borders 
  revolute 
  but 
  flat 
  

   below 
  the 
  point; 
  costa 
  stout, 
  rufescent 
  when 
  old, 
  vanishing 
  

   at 
  or 
  below 
  apex 
  ; 
  cells 
  of 
  the 
  areolation 
  small, 
  distinct, 
  thick- 
  

   waJled, 
  irregular, 
  roundish-quadrate, 
  minutely 
  papillose, 
  the 
  

   lower 
  rectangular, 
  rather 
  elongated 
  toward 
  costa, 
  quadrate 
  

   or 
  transversely 
  dilated 
  on 
  the 
  borders. 
  Pericha^tial 
  bracts 
  

   not 
  sheathmg, 
  oblong-lingulate, 
  obtuse 
  at 
  apex. 
  Pedicel 
  

   reddish, 
  twisted 
  to 
  the 
  left 
  above, 
  lo-i 
  2 
  mm. 
  long. 
  Capsule 
  

   erect, 
  cylmdrica 
  badious 
  when 
  old, 
  2-2.50 
  mm. 
  long, 
  .35- 
  

   .50 
  mm. 
  broad 
  ;lid 
  obliquely 
  rostrate. 
  Peristome 
  unknown. 
  

  

  Uregon: 
  Milwaukee, 
  crevices 
  of 
  rocks 
  {L. 
  F, 
  Hender- 
  

  

  which 
  however 
  it 
  is 
  readily 
  distinguished 
  by 
  the 
  yellowish 
  

  

  and 
  cXfTT 
  t""^^' 
  '''"^'' 
  '^'^ 
  ^«"g«^ 
  ^"d 
  paler 
  pedicel, 
  

   a 
  Inn 
  P, 
  ^' 
  ^1 
  .^ 
  "^'T'^^^^e" 
  and 
  more 
  elongated 
  capsule, 
  of 
  

   From 
  F. 
  ^''°^^^^°;i 
  ^/ 
  ^""ger 
  and 
  more 
  incrassatid 
  cells. 
  

   JXJ^xT^'" 
  Jl;. 
  ^"'"y' 
  ^"^' 
  '' 
  '^^^'^ 
  also 
  in 
  the 
  form 
  

   has 
  Te\T 
  '^^ 
  "P"^^^' 
  ^"^' 
  b^^^des, 
  this 
  last 
  species 
  

  

  cells 
  "''''' 
  ^'^"^'' 
  ^'^^ 
  ^«^^ 
  elongated 
  basilar 
  

  

  sh^?'^^ 
  ^r^TT""--^^ 
  '"^""' 
  ^^^P^^t, 
  gray 
  tutts. 
  Stems 
  

  

  tr- 
  ;. 
  mmT-' 
  r^l. 
  ^""^"^ 
  «"^^"' 
  -75-1 
  25 
  mm. 
  long, 
  

  

  smoothish 
  hair 
  ; 
  borders 
  /ener^llv 
  r 
  JP^'i 
  .P'-o 
  ^nged 
  into 
  a 
  

  

  costa 
  canaliculate 
  • 
  basilar 
  r^?l7 
  f 
  fu 
  ^^"^ 
  '"J 
  H^^ 
  "PP^^' 
  P^"^' 
  

   rate 
  nellnnM 
  tw. 
  "^^, 
  ^ 
  , 
  ^ 
  °^ 
  ^^^ 
  areolation 
  lax,' 
  quad- 
  

   late, 
  pellucid, 
  thin-walled, 
  the 
  upper 
  bistratose, 
  subquadrate 
  

  

  