﻿T. 
  Holm 
  — 
  Studies 
  in 
  the 
  Cyperaqece. 
  439 
  

  

  foundland 
  (legit 
  Stuvitz) 
  the 
  pistillate 
  spikes 
  are 
  long, 
  

   slender, 
  borne 
  on 
  long, 
  filiform 
  peduncles, 
  spreading 
  

   or 
  almost 
  erect, 
  and 
  the 
  scales 
  are 
  aristate 
  ; 
  in 
  Nova 
  

   Scotia 
  (Belleview 
  Cove) 
  the 
  plant 
  is 
  very 
  tall 
  and 
  slender 
  

   with 
  the 
  pistillate 
  spikes 
  more 
  denseflowered, 
  and 
  with 
  

   the 
  scales 
  bearing 
  very 
  long 
  aristae; 
  some 
  specimens 
  

   from 
  Herb. 
  William 
  Boott 
  (Medford, 
  Mass.) 
  represent 
  

   this 
  variety, 
  but 
  are 
  more 
  robust, 
  the 
  pistillate 
  spikes 
  are 
  

   cylindric, 
  compact, 
  short-peduncled, 
  and 
  the 
  scales 
  aris- 
  

   tate. 
  In 
  Labrador 
  we 
  meet 
  with 
  several 
  forms, 
  some 
  

   very 
  robust, 
  others 
  more 
  slender, 
  exhibiting 
  the 
  same 
  

   habit 
  as 
  the 
  Scandinavian, 
  and 
  with 
  the 
  scales 
  merely 
  

   mucronate. 
  Then 
  in 
  Alaska 
  the 
  plant 
  is 
  quite 
  tall, 
  

   broad-leaved 
  and 
  with 
  the 
  thick, 
  denseflowered 
  spikes 
  

   distinctly 
  peduncled, 
  but 
  erect, 
  and 
  with 
  the 
  scales 
  acu- 
  

   minate, 
  but 
  neither 
  mucronate 
  nor 
  aristate. 
  Several 
  of 
  

   our 
  Scandinavian 
  specimens 
  correspond 
  exactly 
  with 
  

   these 
  Alaskan, 
  but 
  are 
  less 
  robust 
  as 
  to 
  culm 
  and 
  foliage. 
  

  

  Var 
  rj 
  Thulensis 
  Th. 
  Fries. 
  — 
  Stolonif 
  erous 
  ; 
  culms 
  

   erect, 
  glabrous, 
  20-25 
  cm. 
  high; 
  leaves 
  deep 
  green, 
  flat, 
  

   longer 
  than 
  the 
  culms 
  ; 
  spikes 
  relatively 
  short, 
  the 
  ter- 
  

   minal 
  staminate, 
  the 
  lateral 
  two 
  to 
  three 
  pistillate, 
  2, 
  5 
  

   cm. 
  in 
  length, 
  long 
  -peduncled, 
  but 
  erect, 
  remote, 
  and 
  sub- 
  

   tended 
  by 
  foliaeeous 
  bracts, 
  much 
  longer 
  than 
  the 
  inflor- 
  

   escence 
  ; 
  scales 
  of 
  staminate 
  flowers 
  pale-brown 
  with 
  

   the 
  midrib 
  excurrent 
  so 
  as 
  to 
  form 
  an 
  arista; 
  scales 
  of 
  

   pistillate 
  flowers 
  almost 
  black 
  with 
  broad, 
  green 
  midrib 
  

   extended 
  into 
  a 
  long 
  arista; 
  perigynium 
  light 
  green, 
  

   elliptic, 
  prominently 
  three-nerved, 
  with 
  a 
  short, 
  entire 
  

   beak, 
  broader 
  and 
  longer 
  than 
  the 
  body 
  of 
  the 
  scale; 
  

   stigmata 
  2 
  or 
  3. 
  

  

  In 
  marshes 
  of 
  St. 
  Paul 
  Island, 
  Behring 
  Sea, 
  collected 
  

   by 
  James 
  M. 
  Macoun 
  (No. 
  16,618). 
  

  

  Besides 
  these 
  forms 
  and 
  varieties 
  Car 
  ex 
  salina 
  Wah- 
  

   lenb. 
  is 
  known 
  also 
  to 
  produce 
  hybrids 
  with 
  several 
  of 
  

   the 
  distigmatic 
  Microrhynchce 
  and 
  JEorastachyce, 
  and 
  

   Almquist 
  (1. 
  c.) 
  enumerates 
  these 
  as 
  follow: 
  

  

  1. 
  aquatilis 
  X 
  salina 
  —- 
  C. 
  halophila 
  Nyl. 
  

  

  2. 
  rigida 
  X 
  salina 
  (borealis). 
  

  

  3. 
  vulgaris 
  X 
  salina 
  = 
  C. 
  spiculosa 
  Fr. 
  

  

  4. 
  Hudsonii 
  X 
  salina. 
  

  

  5. 
  acuta 
  X 
  salina. 
  

  

  6. 
  maritima 
  X 
  salina. 
  

  

  Am. 
  Joub. 
  Sci. 
  — 
  Fourth 
  Series, 
  Vol. 
  XL1X, 
  No. 
  294. 
  -June, 
  11)20. 
  

   31 
  

  

  