﻿1S9O.] 
  BOTANICAL 
  GAZETTE. 
  

  

  251 
  

  

  In 
  North 
  America 
  as 
  common 
  as 
  in 
  Europe. 
  

  

  According 
  to 
  the 
  development 
  of 
  the 
  papillae 
  in 
  the 
  branch 
  

   leaves 
  I 
  distinguish 
  : 
  

  

  Var. 
  Ifeve 
  Warxst. 
  with 
  perfectly 
  smooth 
  inner 
  walls 
  of 
  

   the 
  hyahne 
  cells 
  ; 
  here 
  belongs 
  also 
  

  

  f. 
  giaucescens 
  s. 
  f. 
  squarrosula 
  (Bryol. 
  Germ.). 
  

  

  Plants 
  usually 
  blue-green 
  ; 
  branch 
  leaves 
  with 
  squarrose- 
  

  

  spreading 
  tips. 
  This 
  plant 
  is 
  the 
  S. 
  o-laucum 
  v. 
  Klinggr. 
  

   (1872). 
  ^ 
  ^ 
  *.B 
  

  

  Massachusetts, 
  Brookline, 
  75 
  ft. 
  {Faxon). 
  

  

  , 
  Var. 
  suhlcBve 
  Limpr., 
  with 
  very 
  indistinct 
  papillas 
  on 
  the 
  

  

  internal 
  walls 
  of 
  the 
  hyaline 
  cells, 
  in 
  part 
  wholly 
  wanting. 
  

  

  Of 
  this 
  variety 
  I 
  have 
  hitherto 
  seen 
  no 
  North 
  American 
  

   specimens. 
  

  

  , 
  o^?^* 
  P^P'^^ostmi 
  (LiXDB.) 
  ScHPR. 
  Svnops. 
  Ed. 
  II, 
  p. 
  848 
  

  

  (1876). 
  ^ 
  ■^ 
  ^ 
  

  

  Syn.: 
  S. 
  papillosum 
  Lindb. 
  in 
  Act. 
  Soc. 
  Sc. 
  Fenn. 
  10, 
  p. 
  280 
  (1872). 
  

  

  Hyaline 
  cells 
  within, 
  so 
  far 
  as 
  they 
  are 
  united 
  to 
  the 
  chlo- 
  

   rophyllose 
  cells, 
  thickly 
  and 
  distinctly 
  papillose. 
  

  

  Miquelon 
  Island 
  ; 
  New 
  Jersey 
  : 
  Pennsylvania; 
  

   ,, 
  —r-iii'e, 
  Crawford's, 
  1,900 
  ft., 
  Mt."^Willey, 
  2,500 
  ft., 
  

  

  ur''^""""' 
  ^'5°^ 
  ^^•' 
  Mass., 
  Brookline, 
  75 
  tt. 
  (Faxon). 
  

   With 
  respect 
  to 
  the 
  development 
  of 
  the 
  papilla? 
  in 
  S. 
  pa- 
  

   pillosum 
  the 
  case 
  is 
  exactlv 
  the 
  same 
  as 
  in 
  other 
  species 
  ; 
  

  

  ometimes 
  these 
  incrassations 
  are 
  extremely 
  numerous, 
  some- 
  

   imes 
  they 
  almost 
  disappear, 
  and 
  sometimes 
  thev 
  occur 
  very 
  

   unequally 
  on 
  the 
  same 
  plant; 
  so 
  it 
  is 
  in 
  S. 
  Wulfianum, 
  S. 
  

  

  '"es, 
  b. 
  squarrosum 
  and 
  in 
  various 
  exotic 
  species 
  of 
  the 
  

  

  the 
  comb-fibrils. 
  

  

  fnl- 
  ^^^- 
  ^^^ 
  Sphaignes, 
  p. 
  4. 
  Cardot, 
  under 
  S. 
  cymbi- 
  

   ,""um, 
  adduces 
  a 
  var. 
  Lndovicianum 
  Ren. 
  et 
  Card, 
  from 
  

   ^"""^ 
  - 
  of 
  stem 
  and 
  

  

  OUISI 
  

  

  brn 
  k 
  iviississippi, 
  in 
  wnicn 
  me 
  conc.^. 
  v^* 
  oiv,.*. 
  

  

  inches 
  is 
  scantily 
  furnished 
  with 
  fibrils 
  and 
  whose 
  stem- 
  

   ^^aves 
  are 
  dimorphous. 
  I 
  have 
  not 
  seen 
  it 
  and 
  therefore 
  can 
  

   "lake 
  any 
  comments 
  on 
  it. 
  

  

  ^' 
  Transverse 
  walls 
  of 
  the 
  cortical 
  cells 
  of 
  the 
  branches 
  the 
  same 
  aa 
  

   in 
  b 
  and 
  c. 
  Chlorophyllose 
  cells 
  in 
  cross 
  section 
  elliptic, 
  central 
  

   a"d 
  on 
  both 
  sides 
  enclosed 
  by 
  the 
  hyaline 
  cells. 
  Wood 
  cylinder 
  

  

  