﻿Vol. 
  XV. 
  No. 
  6.— 
  Botaimical 
  Gazette.-June. 
  i89o. 
  

  

  Coiitributious 
  to 
  the 
  knowledge 
  of 
  Xorth 
  American 
  Sphagna. 
  I. 
  

  

  C. 
  WARXSTORF. 
  

  

  During 
  the 
  past 
  ten 
  years 
  the 
  North 
  American 
  peat-mosses 
  

   have 
  been 
  repeatedly" 
  elaborated. 
  In 
  the 
  year 
  1882 
  ap- 
  

   peared 
  a 
  work 
  by 
  L'indberg 
  under 
  the 
  title", 
  Europas 
  och 
  

   Nord-Amerikas 
  Hvitmossor 
  (Sphagna), 
  in 
  which 
  he 
  de- 
  

   scribes 
  2x 
  species 
  and 
  3 
  subspecies 
  for 
  both 
  continents. 
  Of 
  

   these 
  S. 
  cydofhyllum 
  Sulliv., 
  S. 
  macrophylluiii 
  Bernh., 
  S. 
  

   cribroswn 
  Lindb., 
  nov. 
  s-p., 
  and 
  S. 
  Poriortcensc 
  Hpe. 
  belong 
  

   exclusively 
  to 
  North 
  America, 
  S. 
  Angstrcemii 
  Hartm. 
  only 
  to 
  

   ii-urope, 
  while 
  the 
  remaining 
  species 
  are 
  common 
  to 
  both 
  

   continents. 
  Three 
  years 
  later 
  (1885) 
  Miss 
  Clara 
  E. 
  Cum- 
  

   mings 
  published 
  in 
  a 
  catalogue 
  of 
  the 
  Musci 
  and 
  Hepatica^ 
  

   01 
  North 
  America 
  north 
  of 
  Mexico 
  27 
  species 
  of 
  Sphagnum. 
  

   Among 
  these 
  S. 
  Mtcelleri 
  Sch^r 
  . 
  and 
  S. 
  molle 
  Sulliv., 
  S, 
  se- 
  

   doides 
  Brid. 
  and 
  S. 
  Pylaief 
  Brid., 
  S. 
  rigidiim 
  Schpr. 
  and 
  S, 
  

   trarbe7-i 
  Lesq. 
  & 
  James 
  are 
  identical, 
  wherefore 
  only 
  24 
  spe- 
  

   cies 
  remain. 
  Finally, 
  in 
  Revision 
  des 
  Sphaignes 
  de 
  I'Amer- 
  

  

  Nord(i887), 
  Jul 
  

  

  uie 
  

  

  p 
  

  

  o, 
  sqiiarroszim 
  Pers., 
  S. 
  Girgensohnii 
  Russ. 
  and 
  S. 
  cuspi- 
  

   datum 
  Ehrh., 
  are 
  considered 
  by 
  him 
  as 
  subspecies. 
  Cardot 
  

   seems 
  perfectly 
  justified 
  when 
  he 
  designates 
  the 
  ^5". 
  crihrostcm 
  

   ■*^indb. 
  as 
  ^S*. 
  Flo7'idanum 
  (Austin), 
  for 
  this 
  fine, 
  characteris- 
  

   tic 
  species 
  was 
  distinguished 
  in 
  1880 
  by 
  Austin 
  as 
  S. 
  macro- 
  

   Wiyllum 
  var, 
  Floridanum. 
  Cardot 
  had 
  not 
  seen 
  S, 
  Ga^-heri 
  

  

  f^%^ 
  ^ 
  James, 
  but 
  conjectured 
  that 
  it 
  might 
  be 
  onl}- 
  a 
  form 
  

   01 
  K^. 
  rigidum 
  Schpr. 
  A 
  specimen 
  which 
  I 
  have 
  received 
  

   Ji"om 
  the 
  Kew 
  Herb. 
  (England) 
  has 
  fully 
  confirmed 
  this 
  opin- 
  

  

  on 
  of 
  Cardot; 
  S. 
  Garberi 
  is 
  only 
  a 
  squarrose 
  form 
  of 
  S. 
  

   <^omf 
  actum 
  DC. 
  

  

  When 
  now 
  I 
  attempt 
  in 
  the 
  following 
  pages 
  to 
  present 
  a 
  

   ^evievy 
  of 
  all 
  the 
  known 
  species 
  and 
  varieties 
  of 
  the 
  Xorth 
  

   niencan 
  peat-mosses, 
  I 
  wish 
  to 
  state 
  that 
  the 
  chief 
  induce- 
  

   ^^nt 
  to 
  do^ 
  this 
  comes 
  from 
  Mr. 
  Edwin 
  Faxon, 
  of 
  Boston. 
  

   J 
  ? 
  V^^ 
  during 
  the 
  past 
  year, 
  and 
  even 
  earlier, 
  withunwear- 
  

   ^ 
  industry 
  and 
  commendable 
  perseverance, 
  made 
  a 
  sys- 
  

   ^^matic 
  collection 
  of 
  the 
  Sphagna 
  of 
  Massachusetts 
  and 
  

  

  