﻿T. 
  Holm 
  — 
  Studies 
  in 
  the 
  Cyperacece. 
  355 
  

  

  Art. 
  XXXI 
  V. 
  — 
  Studies 
  in 
  the 
  Oyperacem; 
  by 
  Theo. 
  Holm. 
  

   XII. 
  Segregates 
  of 
  Carex 
  Jilifolia 
  Nutt. 
  (With 
  eight 
  

   figures 
  in 
  the 
  text.) 
  

  

  While 
  engaged 
  in 
  a 
  study 
  of 
  the 
  alpine 
  flora 
  of 
  the 
  Rocky 
  

   Mountains 
  in 
  Colorado 
  last 
  summer, 
  we 
  noticed 
  a 
  small 
  Carex, 
  

   which 
  showed 
  such 
  a 
  striking 
  resemblance 
  to 
  Elijna 
  spicata, 
  

   that 
  it 
  required 
  a 
  careful 
  analysis 
  of 
  the 
  flower 
  to 
  decide 
  

   whether 
  it 
  was 
  this 
  plant 
  or, 
  really, 
  a 
  Carex. 
  It 
  was 
  unlike 
  

   any 
  other 
  which 
  we 
  had 
  seen 
  heretofore 
  in 
  the 
  mountains, 
  but 
  

   it 
  occurred 
  so 
  abundantly 
  on 
  some 
  bald 
  mountain 
  tops, 
  that 
  we 
  

   never 
  suspected 
  it 
  to 
  be 
  a 
  "species 
  nova." 
  However, 
  when 
  we 
  

   commenced 
  to 
  work 
  up 
  the 
  material, 
  it 
  was 
  soon 
  learned 
  that 
  

   our 
  plant 
  was 
  an 
  old 
  acquaintance, 
  but 
  that 
  it 
  had 
  been 
  placed 
  

   under 
  Carex 
  jilifolia 
  ]S 
  T 
  utt. 
  as 
  a 
  variety 
  : 
  miser 
  (sic 
  !) 
  Bail. 
  It 
  

   never 
  occurred 
  to 
  us 
  that 
  this 
  plant 
  could 
  be 
  in 
  any 
  way 
  a 
  

   form 
  or 
  variety 
  of 
  C. 
  jilifolia, 
  and 
  since 
  the 
  so-called 
  variety 
  

   " 
  valida 
  " 
  of 
  this 
  same 
  species 
  from 
  lower 
  elevations 
  was 
  also 
  

   in 
  our 
  collection, 
  we 
  felt 
  induced 
  to 
  study 
  them 
  in 
  order 
  to 
  

   find 
  out 
  how 
  far 
  they 
  were 
  related 
  to 
  each 
  other. 
  The 
  result 
  

   of 
  our 
  investigation 
  is, 
  that 
  we 
  can 
  by 
  no 
  means 
  look 
  upon 
  

   these 
  plants 
  as 
  representing 
  one 
  species, 
  nor 
  being 
  varieties, 
  

   since 
  they 
  exhibit 
  not 
  a 
  few 
  distinct 
  morphological 
  characters, 
  

   besides 
  that, 
  we 
  have, 
  also, 
  found 
  some 
  important 
  differences 
  

   in 
  their 
  anatomical 
  structure. 
  

  

  In 
  later 
  years 
  anatomical 
  studies 
  have 
  become 
  very 
  useful 
  

   not 
  only 
  to 
  the 
  classification 
  of 
  plants 
  in 
  general, 
  but 
  also 
  in 
  

   view 
  of 
  the 
  species 
  themselves. 
  And 
  in 
  a 
  genus 
  as 
  large 
  as 
  

   Carex 
  the 
  morphological 
  characters 
  are 
  often 
  so 
  indistinct 
  and 
  

   unimportant 
  that 
  it 
  seems, 
  quite 
  necessary 
  to 
  take 
  the 
  two 
  

   together. 
  The 
  anatomical 
  literature 
  already 
  possesses 
  several 
  

   works 
  upon 
  the 
  structure 
  of 
  Carices, 
  which 
  may 
  be 
  seen 
  from 
  

   our 
  references 
  in 
  previously 
  published 
  articles 
  in 
  this 
  Journal. 
  

   In 
  the 
  present 
  case 
  it 
  is 
  our 
  intention 
  to 
  show 
  how 
  very 
  

   important 
  distinctions 
  may 
  be 
  drawn 
  from 
  the 
  structure 
  of 
  

   species 
  which, 
  viewed 
  morphologically, 
  were 
  once 
  considered 
  as 
  

   only 
  one 
  type 
  with 
  two 
  varieties. 
  

  

  As 
  regards 
  Carex 
  filifolia 
  Nutt. 
  this 
  species 
  is 
  by 
  Professor 
  

   L. 
  H. 
  Bailey- 
  placed 
  under 
  the 
  Sp/mridiophorce 
  of 
  Drejer,f 
  

   as 
  a 
  member 
  of 
  Tuckermann's 
  u 
  Filifolice"% 
  and 
  next 
  to 
  Carex 
  

   scirpoidea 
  Michx. 
  However, 
  it 
  is 
  readily 
  seen 
  by 
  compar- 
  

  

  * 
  Bailey, 
  L. 
  H. 
  : 
  A 
  preliminary 
  synopsis 
  of 
  North 
  American 
  Carices 
  (Proceed* 
  

   Am. 
  Acad. 
  Arts 
  and 
  Sciences. 
  1886, 
  p. 
  122). 
  

  

  \ 
  Drejer. 
  S. 
  : 
  Symbolaa 
  Caricologicae. 
  Kjobenhavn, 
  1844, 
  p. 
  9. 
  

  

  t 
  Tuckermann, 
  Edw. 
  : 
  Enumeratio 
  methodica 
  Cancum 
  quarundam. 
  1843. 
  

  

  