﻿250 
  BOTANICAL 
  GAZETTE. 
  [ 
  October, 
  

  

  Imbricatum 
  without 
  comb-fibrils, 
  which 
  frequently 
  has 
  sqiiar- 
  

   rose 
  branch 
  leaves. 
  The 
  plant 
  from 
  Florida, 
  with 
  chloro- 
  

   phyllose 
  cells, 
  broad-trapeziform 
  in 
  cross 
  section 
  and 
  free 
  on 
  

   both 
  sides, 
  provisionally 
  I 
  can 
  not 
  include 
  here. 
  In 
  an 
  arti- 
  

   cle, 
  " 
  Welche 
  Stellung 
  in 
  der 
  Cymbifoliumgruppe 
  nimmt 
  das 
  

   S. 
  affine 
  ein?" 
  (Hedwigia, 
  1889, 
  pp. 
  367-372), 
  I 
  have 
  ex- 
  

   pressed 
  my 
  opinion 
  at 
  length, 
  and 
  therein 
  stated 
  that 
  with 
  

   regard 
  to 
  the 
  occurrence 
  of 
  comb-fibrils 
  in 
  S. 
  imbricatum 
  

   three 
  principal 
  forms 
  may 
  be 
  distinguished: 
  

  

  1. 
  Var, 
  cristatiim 
  with 
  numerous 
  comb-fibrils 
  occurring 
  

   in 
  the 
  lower 
  half 
  of 
  the 
  branch 
  leaves, 
  

  

  2. 
  Var. 
  sublceve 
  with 
  slender 
  beginnings 
  of 
  comb-fibrils 
  

   in 
  the 
  hyaline 
  cells 
  near 
  the 
  base 
  of 
  the 
  leaf, 
  and 
  

  

  3. 
  Var. 
  affine 
  (Ren. 
  et 
  Card.) 
  entirely 
  free 
  from 
  co 
  

  

  mb 
  

  

  fibrils. 
  

  

  M 
  

  

  / 
  

  

  Boston, 
  and 
  has 
  communicated 
  to 
  me 
  in 
  numerous 
  and 
  beau- 
  

   tiful 
  specimens, 
  and 
  also 
  all 
  three 
  with 
  distinctly 
  squarrose 
  

   leaves, 
  so 
  that 
  there 
  is 
  of 
  each 
  variety 
  a 
  f. 
  squarrosula. 
  Euro- 
  

   jsean 
  specimens 
  of 
  these 
  squarrose-leaved 
  forms 
  are 
  not 
  yet 
  

   known 
  to 
  me 
  nor 
  those 
  in 
  whose 
  leaves 
  the 
  comb-fibrils 
  are 
  

   entn-ely 
  wanting, 
  and 
  which 
  would 
  correspond 
  to 
  the 
  var. 
  

   athne. 
  These 
  squarrose-leaved 
  forms 
  of 
  S. 
  imbricatum 
  are 
  

   analogous 
  to 
  5. 
  cymbifolium 
  var. 
  squarrosulwn, 
  Bryol. 
  Germ. 
  

   \^^^2>)=S. 
  glaucum 
  v. 
  Klinggr. 
  (1880). 
  

  

  C. 
  Transverse 
  walls 
  of 
  the 
  cortical 
  cells 
  of 
  the 
  branches 
  as 
  in 
  l*- 
  

   phlorophyllose 
  cells 
  of 
  the 
  branch 
  leaves 
  in 
  cross 
  section 
  narrow 
  

   isosceles 
  -triangular 
  to 
  triangular-elliptic 
  or 
  isosceles-trapeziform^ 
  

   placed 
  on 
  the 
  inner 
  side 
  of 
  the 
  leaf 
  between 
  the 
  hyaline 
  cells 
  and 
  

   here 
  always 
  free, 
  on 
  the 
  outside 
  enclosed 
  or 
  with 
  free 
  outer 
  walls. 
  

   Hyalme 
  cells 
  internally, 
  so 
  far 
  a« 
  they 
  are 
  united 
  to 
  the 
  chloro- 
  

   phyllose 
  cells, 
  either 
  quite 
  smootl? 
  or 
  faintly 
  to 
  strongly 
  papiU^^^' 
  

   fetem 
  cortex 
  with 
  abundant 
  fibrils 
  and 
  usually 
  with 
  numerous 
  

   pores 
  in 
  the 
  external 
  walls. 
  

  

  33- 
  ^. 
  cymbifolium 
  Ehrh. 
  Hannov. 
  Mag. 
  1780, 
  p- 
  ^^y 
  

  

  Syn.: 
  S 
  obtuslJoUum 
  Ehrh. 
  PI. 
  Crypt, 
  no. 
  241 
  (1793). 
  

  

  * 
  laiijdmm 
  Hedw. 
  Sp. 
  Mu.c. 
  p. 
  27 
  (1801). 
  

  

  ? 
  «Won^um 
  P. 
  B. 
  Prodr. 
  p. 
  88 
  (1805). 
  

  

  5. 
  cras^lsetum 
  Brid. 
  Sp. 
  Muse. 
  I. 
  p. 
  15 
  (1806). 
  

  

  J. 
  Pseudoeymbi/ollum 
  C. 
  Miill. 
  Linn^a. 
  1874, 
  p. 
  547. 
  

  

  t 
  ""^^''f^ 
  Hampe 
  in 
  Flora 
  1888, 
  p. 
  400. 
  

  

  5. 
  a^rae 
  Schpr. 
  Original 
  in 
  Herb. 
  Bescherelle. 
  

  

  8. 
  Whaeleggei 
  C. 
  Miill. 
  Flora 
  1887, 
  p. 
  408. 
  

  

  S. 
  aoruAum 
  C. 
  Mull. 
  Flora 
  1887, 
  p. 
  408. 
  

  

  