﻿$6 
  BOTANICAL 
  GAZETTK. 
  [ 
  Miirch, 
  

  

  tending 
  our 
  knowledge 
  of 
  the 
  types 
  of 
  the 
  Flora 
  Boreali- 
  

   Americana 
  — 
  nothing 
  approximating 
  in 
  character 
  to 
  S. 
  sub- 
  

   co?'data 
  And. 
  has 
  been 
  found. 
  Did 
  Prof. 
  Macoun 
  and 
  his 
  

   associates, 
  and 
  myself 
  as 
  well, 
  fail 
  to 
  appreciate 
  the 
  signifi- 
  

   cance 
  of 
  the 
  description, 
  or 
  was 
  the 
  plant 
  indeed 
  so 
  very 
  rare? 
  

   In 
  the 
  midst 
  of 
  our 
  bewilderment 
  I 
  asked 
  Mr. 
  Baker 
  for 
  any 
  

   hint 
  toward 
  a 
  solution 
  of 
  the 
  difficulty 
  which 
  the 
  tvpe 
  speci- 
  

   mens 
  might 
  afford, 
  receiving 
  in 
  response 
  a 
  drawing 
  (elab- 
  

   orated 
  from 
  a 
  tracing) 
  of 
  all 
  the 
  specimens 
  on 
  the 
  sheet, 
  all 
  

   the 
  labels 
  copied 
  and 
  a 
  few 
  fragments, 
  a 
  capsule 
  or 
  two, 
  to 
  

   show 
  minute 
  characters. 
  This 
  led 
  to 
  the 
  recognition 
  of 
  the 
  

   corresponding 
  numbers 
  of 
  the 
  '* 
  Hooker, 
  Barratt 
  and 
  Tor- 
  

   rey 
  " 
  distribution 
  in 
  the 
  Torrey 
  herbarium, 
  so 
  that 
  altogether 
  

   it 
  is 
  possible 
  to 
  speak 
  with 
  assurance 
  concerning 
  the 
  material 
  

   which 
  Andersson 
  had 
  before 
  him. 
  (i) 
  Two 
  large 
  specimens 
  

   of 
  S. 
  arctica 
  Pall, 
  (not 
  R. 
  Br.), 
  almost 
  certainlv 
  by 
  some 
  

   mistake 
  ticketed 
  as 
  from 
  the 
  "Rocky 
  Mtns. 
  coll. 
  Drum- 
  

   mond," 
  one 
  specimen 
  showing 
  fertile 
  aments 
  past 
  maturity. 
  

   From 
  these 
  are 
  derived 
  the 
  character 
  of 
  the 
  aments, 
  mainly, 
  

   and 
  the 
  following: 
  "Adult 
  leaves 
  orbicular-oval, 
  2' 
  long, 
  

   nearly 
  the 
  same 
  width, 
  long-petioled, 
  midrib 
  and 
  nerves 
  

   acutely 
  prominent, 
  reticulate, 
  margin 
  entire, 
  petioles 
  yel- 
  

   lovv, 
  buds 
  large." 
  (2) 
  Two 
  stunted 
  specimens 
  of 
  S. 
  aden- 
  

   ophylla, 
  leaves 
  only, 
  habitat 
  not 
  given. 
  Here 
  belong 
  "leaves 
  

   cordate, 
  margin 
  minutely 
  glandular-denticulater 
  stipules 
  

   acutely 
  serrate, 
  ornate." 
  (3) 
  Two 
  specimens 
  of 
  S. 
  cordifolia 
  

   Hook, 
  supposed 
  to 
  represent 
  the 
  early 
  state 
  of 
  the 
  preced- 
  

   ing. 
  In 
  the 
  Torrey 
  herb, 
  the 
  S. 
  arctica 
  specimen 
  is 
  named 
  

   \^c?y^^^ 
  ^ar- 
  glabra," 
  the 
  S. 
  adenophylla 
  specimen 
  "S. 
  

   corditoha 
  var. 
  serrulata," 
  so 
  it 
  appears 
  Dr. 
  Barratt 
  regarded 
  

   the 
  two 
  as 
  distinct. 
  How 
  thev 
  came 
  to 
  be 
  placed 
  together 
  

   on 
  the 
  Kew 
  sheet 
  is 
  a 
  mystery*, 
  and 
  still 
  more 
  inexplicable 
  is 
  

   It 
  how 
  so 
  critical 
  a 
  salicologist 
  as 
  Andersson 
  should 
  have 
  been 
  

  

  misled 
  into 
  combining 
  the 
  characters 
  of 
  the 
  two 
  in 
  his 
  "S. 
  

   subcordata." 
  

  

  Rockford, 
  III. 
  

  

  