﻿356 
  T. 
  Holm 
  — 
  Studies 
  in 
  the 
  Cyperacece. 
  

  

  ing 
  these 
  two 
  species, 
  that 
  the 
  latter 
  does 
  not 
  show 
  any 
  

   relationship 
  to 
  C 
  filifolia, 
  but 
  that 
  it 
  may 
  be 
  more 
  naturally 
  

   placed 
  among 
  the 
  " 
  Ifontance" 
  of 
  Fries,"* 
  and 
  as 
  one 
  of 
  the 
  

   "fovmm 
  hebetatcB 
  " 
  of 
  that 
  section, 
  as 
  already 
  pointed 
  out 
  by 
  

   Drejer 
  (1. 
  c). 
  Carex 
  filifolia 
  is, 
  on 
  the 
  contrary, 
  one 
  of 
  the 
  

   Filifolice 
  Tuckm., 
  and 
  constitutes 
  together 
  with 
  our 
  C. 
  ely- 
  

   noides, 
  the 
  only 
  representatives 
  of 
  this 
  group 
  in 
  North 
  

   America. 
  But 
  it 
  is, 
  on 
  the 
  other 
  hand, 
  not 
  so 
  very 
  certain 
  

   whether 
  the 
  " 
  Filifolice 
  " 
  are 
  really 
  to 
  be 
  placed 
  under 
  the 
  

   Sphwridiophorce, 
  at 
  least 
  not 
  if 
  we. 
  emphasize 
  this 
  section 
  as 
  it 
  

   was 
  originally 
  proposed 
  by 
  Drejer. 
  This 
  author 
  does 
  not 
  

   attribute 
  such 
  characters 
  to 
  the 
  Sphoeridiophorce 
  as 
  are 
  included 
  

   by 
  Professor 
  Bailey 
  (1. 
  c). 
  

  

  Drejer 
  does 
  not 
  speak 
  of 
  a 
  " 
  perigynium, 
  firm 
  or 
  hard 
  in 
  

   texture, 
  hairy 
  or 
  scabrous," 
  but 
  "perigynium 
  membranaceum, 
  

   pube 
  hirsutie 
  vel 
  tomento 
  vestitum," 
  of 
  which 
  only 
  the 
  first 
  

   character, 
  the 
  membranaceous 
  perigynium 
  (utriculus) 
  is 
  applic- 
  

   able 
  to 
  C. 
  filifolia. 
  Moreover, 
  Drejer 
  describes 
  the 
  bracts 
  as 
  

   " 
  membranacese 
  nervo 
  dorsali 
  excurrente 
  herbaceo," 
  which 
  is 
  

   not 
  recognized 
  by 
  Professor 
  Bailey, 
  and 
  which 
  does 
  not 
  apply 
  

   to 
  C. 
  filifolia 
  either. 
  The 
  description 
  of 
  the 
  utriculus 
  : 
  

   " 
  rostro 
  apice 
  subbilobo 
  " 
  by 
  Drejer 
  is 
  by 
  Professor 
  Bailey 
  

   translated 
  as 
  " 
  bifid." 
  In 
  other 
  words, 
  the 
  Sphceridiophoroe 
  of 
  

   Drejer 
  are 
  not 
  identical 
  with 
  the 
  section 
  of 
  the 
  same 
  name 
  by 
  

   Professor 
  Bailey. 
  Therefore, 
  Professor 
  Bailey 
  does 
  not 
  hesi- 
  

   tate 
  to 
  place 
  the 
  broad-leaved, 
  stoloniferous 
  Carex 
  scirpoidea 
  

   Michx. 
  side 
  by 
  side 
  with 
  0. 
  filifolia, 
  to 
  which 
  it 
  shows 
  no 
  

   resemblance 
  whatever. 
  

  

  The 
  systematic 
  position 
  of 
  Tuckermann's 
  " 
  Filifolice 
  " 
  yet 
  

   remains 
  to 
  be 
  settled, 
  and 
  these, 
  no 
  doubt, 
  represent 
  a 
  group 
  

   just 
  as 
  peculiar 
  and 
  isolated 
  from 
  the 
  other 
  Ca?*ices 
  as 
  is 
  the 
  

   case 
  with 
  the 
  remarkable 
  Carex 
  Fraseri 
  Andr. 
  We 
  must 
  at 
  

   present 
  content 
  ourselves 
  in 
  recognizing 
  the 
  Filifolice 
  as 
  a 
  sec- 
  

   tion 
  rather 
  than 
  a 
  subsection, 
  and 
  it 
  may 
  be 
  of 
  some 
  service 
  to 
  

   further 
  studies, 
  when 
  we 
  in 
  the 
  following 
  pages 
  present 
  a 
  brief 
  

   discussion 
  of 
  a 
  species, 
  which 
  seems 
  to 
  be 
  very 
  closely 
  related 
  

   to 
  C. 
  filifolia, 
  while 
  eliminating 
  another, 
  which 
  was 
  formerly 
  

   considered 
  as 
  an 
  ally 
  of 
  this 
  species. 
  These 
  segregates 
  of 
  

   Carex 
  filifolia 
  Nutt 
  are 
  : 
  

  

  Carex 
  elynoides 
  Holm 
  (fig. 
  1). 
  

   (C 
  filifolia 
  Nutt. 
  var. 
  miser 
  Bail., 
  not 
  C. 
  miser 
  Buckl.) 
  

  

  Rhizome 
  densely 
  cespitose 
  ; 
  culm 
  5 
  to 
  8 
  cm 
  high, 
  stiff, 
  terete, 
  

   sulculate, 
  glabrous 
  ; 
  leaves 
  for 
  the 
  most 
  part 
  longer 
  than 
  the 
  

  

  * 
  Fries, 
  Elias: 
  Summa 
  vegetabilium 
  Scandinavia?. 
  Upsala, 
  1846. 
  Sectio 
  I, 
  

   p. 
  10. 
  

  

  