﻿189^.] 
  BOTANICAL 
  GAZETTE. 
  1 
  39 
  

  

  cled 
  by 
  a 
  relatively 
  broad, 
  stout 
  fibril-ring 
  ; 
  the 
  pores 
  which 
  

   occur 
  in 
  the 
  lower 
  half 
  of 
  the 
  leaf, 
  on 
  the 
  contrary, 
  are 
  large, 
  

   oval 
  and 
  not 
  numerous. 
  In 
  the 
  leaves 
  of 
  the 
  apical 
  half 
  of 
  

   the 
  spreading 
  branches, 
  and 
  of 
  the 
  whole 
  extent 
  of 
  the 
  pend- 
  

   ent 
  branches, 
  the 
  pores 
  gradually 
  diminish 
  in 
  size 
  from 
  the 
  

   base 
  to 
  the 
  apex 
  of 
  the 
  leaves, 
  and 
  the 
  small 
  pores 
  of 
  the 
  

   apex 
  are 
  much 
  larger 
  than 
  the 
  corresponding 
  ones 
  in 
  the 
  

   leaves 
  first 
  mentioned. 
  Pores 
  on 
  the 
  innerside 
  of 
  all 
  the 
  

   leaves 
  more 
  numerous 
  in 
  the 
  lower 
  part 
  of 
  the 
  leaf 
  and 
  near 
  

   the 
  margin, 
  large, 
  mostly 
  destitute 
  of 
  rings, 
  and 
  in 
  part 
  op- 
  

   posite 
  to 
  the 
  outside 
  pores, 
  whereby 
  complete 
  perforations 
  of 
  

   the 
  leaf 
  often 
  occur. 
  

  

  Chlorophyllose 
  cells 
  placed 
  on 
  the 
  inner 
  side 
  of 
  the 
  leaves, 
  

   and 
  in 
  transverse 
  section 
  trapezoidal, 
  more 
  rarely 
  triangular, 
  

   whence 
  the 
  hyaline 
  cells, 
  which 
  are 
  more 
  convex 
  on 
  the 
  

   outer 
  surface, 
  are 
  more 
  or 
  less 
  separated 
  from 
  each 
  other. 
  

  

  Dioicous 
  ; 
  S 
  branches 
  clavate, 
  long 
  subulate-pointed, 
  

   color 
  light 
  to 
  dark 
  red. 
  Perigonial 
  leaves 
  broader 
  and 
  

   shorter 
  than 
  the 
  leaves 
  of 
  the 
  sterile 
  branches. 
  The 
  hyaline 
  

   cells 
  in 
  the 
  lower 
  half 
  nonfibrillose 
  and 
  nonporose, 
  very 
  sel- 
  

   dom 
  furnished 
  wath 
  distant, 
  very 
  slender, 
  incomplete 
  fibrils 
  ; 
  

   m 
  the 
  upper 
  half 
  w^ith 
  very 
  small 
  broad-ringed 
  pores. 
  Fe- 
  

   male 
  flowers 
  as 
  yet 
  unknown. 
  Pericha^tial 
  leaves 
  large, 
  

   ovate-lanceolate, 
  in 
  the 
  lower 
  part 
  constructed 
  of 
  chloro- 
  

   phyllose 
  cells 
  only, 
  in 
  the 
  upper 
  part 
  of 
  both 
  kinds 
  of 
  cells, 
  

   of 
  which 
  the 
  hyafine 
  are 
  always 
  nonfibrillose 
  and 
  often 
  i, 
  2 
  

   or 
  3 
  times 
  divided. 
  Capsule 
  comparatively 
  large, 
  dark 
  red- 
  

   dish 
  brown. 
  Spores 
  dark 
  yellow, 
  rough 
  wnth 
  minute 
  warts. 
  

   Fruit 
  extremely 
  rare. 
  

  

  This 
  small, 
  delicate 
  and 
  extremely 
  beautiful 
  peat-moss 
  is 
  

   easily 
  and 
  certainly 
  distinguished 
  from 
  the 
  nearest 
  related 
  

   forms 
  of 
  the 
  ^c?////^//?/;// 
  group, 
  especially 
  from 
  S. 
  tcnellum 
  

   V. 
  Klinggr., 
  chiefly 
  by 
  the 
  remarkably 
  small 
  broad-ringed 
  

   pores 
  on 
  the 
  outside 
  upper 
  half 
  of 
  the 
  lower 
  and 
  middle 
  leaves 
  

   of 
  the 
  spreading 
  branches. 
  The 
  pores 
  are 
  here 
  smaller 
  than 
  

   in 
  any 
  other 
  European 
  species, 
  and 
  are 
  the 
  more 
  striking 
  to 
  

   the 
  eye 
  because 
  they 
  approach 
  closely 
  to 
  the 
  large 
  pores 
  of 
  

   the 
  lower 
  half 
  of 
  the 
  leaf 
  almost 
  without 
  gradatio.n 
  of 
  size. 
  In 
  

   S. 
  Wulfianum 
  also 
  the 
  pores 
  are 
  very 
  small 
  in 
  the 
  apical 
  half 
  

   of 
  the 
  leaf, 
  sometimes 
  not 
  larger 
  than 
  in 
  the 
  present 
  species, 
  

   but 
  they 
  increase 
  in 
  size 
  graduallv 
  and 
  but 
  slightly 
  towards 
  

   the 
  base 
  of 
  the 
  leaf 
  and 
  in 
  its 
  median 
  line; 
  in 
  this 
  case 
  the 
  

   yery 
  large 
  pores 
  of 
  the 
  two 
  flanks 
  of 
  the 
  leaf 
  contrast 
  strik- 
  

   ingly 
  with 
  the 
  small 
  ones 
  of 
  its 
  median 
  line. 
  

  

  