﻿2i8 
  BOTAxicAL 
  GAZETTE. 
  [September, 
  

  

  angiilar-linguiform, 
  always 
  lacerate 
  two-cleft 
  at 
  the 
  apex 
  and 
  

   without 
  fibrils, 
  as 
  well 
  as 
  by 
  the 
  large 
  membrane-gaps 
  on 
  

   the 
  outer 
  side 
  of 
  the 
  leaves 
  of 
  both 
  kinds 
  of 
  branches 
  or 
  only 
  

   of 
  the 
  pendent 
  ones, 
  in 
  the 
  upper 
  angles 
  of 
  the 
  cells. 
  

  

  b. 
  Stem 
  leaves 
  either 
  with 
  isolated 
  membrane-gaps 
  on 
  both 
  surfaces 
  

   at 
  the 
  extreme 
  tip 
  only, 
  or 
  entirely 
  without 
  them. 
  Fibrils 
  

   sometimes 
  present, 
  sometimes 
  absent. 
  

  

  a. 
  Stem 
  leaves 
  mostly 
  small, 
  equilateral-triangular 
  to 
  short 
  

   isosceles-triangular 
  and 
  pointed, 
  or 
  triangular-linguiform 
  and 
  

   obtuse, 
  mostly 
  noniibrillose, 
  rarely 
  fibrillose 
  in 
  the 
  apical 
  part 
  

   Branch 
  leaves 
  narrowly 
  bordered; 
  on 
  the 
  inner 
  side 
  with 
  nu- 
  

   merous 
  round 
  pores 
  in 
  nearly 
  all 
  the 
  cell 
  angles, 
  on 
  the 
  outer 
  

   side 
  near 
  the 
  apex 
  almost 
  free 
  from 
  pores, 
  or 
  with 
  single 
  or 
  

   numerous 
  small, 
  imperfectly 
  ranged 
  pores 
  on 
  the 
  commissures, 
  

   but 
  in 
  the 
  middle 
  and 
  lower 
  part 
  of 
  the 
  leaf 
  near 
  the 
  margins 
  

   with 
  rather 
  large 
  pores 
  in 
  the 
  upper 
  cell-angles, 
  

  

  15. 
  S. 
  reairviim 
  (P. 
  B. 
  ) 
  Russ. 
  et 
  Warxst. 
  in 
  Sitzungs- 
  

   ber. 
  der 
  Dorpater 
  Naturf.-Ges. 
  1889, 
  p. 
  c^g. 
  

  

  Syn.: 
  S. 
  intermedium 
  Hoffm. 
  Deutschl. 
  Fl. 
  2, 
  p. 
  22 
  (1796), 
  according 
  

   to 
  Lindb., 
  Braithw. 
  and 
  others. 
  

  

  S. 
  cuspidalum 
  Ehrh. 
  C. 
  MiiU. 
  Synopsis 
  I. 
  p. 
  96 
  (1849). 
  

  

  S. 
  pulchricoma 
  G. 
  Miill. 
  Synops. 
  I. 
  p. 
  102 
  (1849). 
  

  

  f 
  S.flexwmm 
  Dz. 
  et 
  MIkb. 
  in 
  Prodr. 
  Fl. 
  Batav. 
  2, 
  F. 
  1, 
  p. 
  76 
  0?^^)- 
  

  

  S. 
  variahile 
  Warnst. 
  var. 
  Europ. 
  Torfm. 
  p. 
  60 
  (1881). 
  

  

  S. 
  Sense 
  C. 
  Miill. 
  1889 
  in 
  litt. 
  

  

  Var. 
  fulchrum 
  Lixdb. 
  in 
  Braithw. 
  Sphaffn. 
  of 
  Eur. 
  and 
  

   N.Am. 
  (1880). 
  ^ 
  ^ 
  

  

  A 
  stately, 
  beautiful 
  form. 
  Stem 
  leaves 
  triangular, 
  point- 
  

   ed, 
  \yith 
  or 
  without 
  fibrils 
  in 
  the 
  apical 
  part. 
  ' 
  Branch 
  leases 
  

   • 
  mostly 
  closely 
  imbricate, 
  when 
  dry 
  slightly 
  undulate, 
  whe" 
  

   moist 
  distinctly 
  five-ranked, 
  broad-lanceolate, 
  lather 
  abrup- 
  

   n- 
  contracted 
  into 
  a 
  short 
  narrowly 
  truncate 
  dentate 
  po'." 
  ■ 
  

   Color 
  of 
  the 
  tufts 
  varied, 
  the 
  heads 
  often 
  fine 
  yellowi^'' 
  

   brown 
  or 
  dirty 
  brown, 
  and 
  the 
  other 
  parts 
  green 
  or 
  blanched. 
  

  

  Miquelon 
  Island 
  [Delamare) 
  ; 
  New 
  Jersey 
  (Austin) 
  ; 
  ^^' 
  

   Hampshire, 
  Crawford 
  House, 
  1,900 
  ft. 
  {.Faxon). 
  

  

  Y^r^'^ucrom^t,;u 
  Rvss. 
  as 
  subsp. 
  in 
  Sitzungsber. 
  derDf^- 
  

   pater 
  Naturf.-Ges. 
  1889, 
  p. 
  99 
  -h 
  

   Stern 
  leaves 
  mostly 
  small, 
  triangular, 
  acuminate 
  and 
  ^'^ 
  ■ 
  

   out 
  fibrils, 
  or 
  m 
  the 
  hemiisophyllots 
  forms 
  larger, 
  isoscde, 
  

   tmngular 
  and 
  with 
  fibrils 
  in 
  the 
  apical 
  part. 
  Branch 
  1 
  a^^^ 
  

   n^r 
  'T' 
  ^^"^e^-Pointed, 
  when 
  dry 
  beautifully 
  undui. 
  

  

  r.i'^'^^V^f"^'^'^^ 
  points, 
  when 
  moist 
  not 
  obviously 
  

   ranked. 
  Color 
  green, 
  whitish 
  or 
  in 
  the 
  heads 
  pal^ye"''^ 
  

  

  