﻿r 
  

  

  Nichols: 
  The 
  vegetation 
  of 
  Connecticut 
  

  

  107 
  

  

  algae 
  can 
  endure 
  such 
  extreme 
  conditions 
  and 
  largely 
  for 
  this 
  

   reason 
  the 
  algal 
  vegetation 
  at 
  the 
  higher 
  levels 
  is 
  very 
  much 
  

   impoverished 
  : 
  in 
  fact, 
  along 
  many 
  rocky 
  shores 
  there 
  is 
  practically 
  

   no 
  vegetation 
  toward 
  high 
  tide 
  mark. 
  The 
  red 
  algae 
  are 
  fre- 
  

   quently 
  represented 
  in 
  the 
  upper 
  littoral 
  by 
  the 
  relatively 
  xerophy- 
  

   tic 
  Bangia 
  fusco-piirpurea; 
  but 
  the 
  browns, 
  except 
  for 
  species 
  that 
  

   may 
  inhabit 
  tidal 
  pools 
  or 
  which 
  may 
  occasionally 
  push 
  their 
  

   way 
  up 
  from 
  the 
  lower 
  littoral, 
  are 
  absent. 
  The 
  characteristic 
  

   algae 
  of 
  this 
  zone 
  are 
  certain 
  greens, 
  particularly, 
  species 
  of 
  

  

  Enteromorph 
  

  

  The 
  two 
  species 
  of 
  this 
  genus 
  listed 
  for 
  

  

  The 
  Entero- 
  

  

  FiG. 
  4. 
  Fucus 
  and 
  Enteromorpha 
  on 
  granitic 
  shore; 
  East 
  Haven. 
  

   morpha 
  appears 
  as 
  a 
  dark 
  streaking 
  on 
  the 
  otherwise 
  bare 
  rock 
  surface. 
  

  

  the 
  lower 
  littoral 
  (E. 
  clatlirata 
  and 
  E. 
  iniestinalis) 
  may 
  occur 
  in 
  

   the 
  upper 
  littoral 
  as 
  well, 
  but 
  there 
  are 
  two 
  other 
  species 
  of 
  this 
  

   genus, 
  viz., 
  E. 
  minima 
  and 
  E." 
  proUfera, 
  which 
  apparently 
  are 
  

   restricted 
  to 
  this 
  region. 
  In 
  addition 
  to 
  the 
  enteromorphas, 
  the 
  

   following 
  algae 
  frequently 
  are 
  represented 
  more 
  or 
  less 
  abundantly 
  

   in 
  the 
  upper 
  littoral: 
  (greens) 
  Urospora 
  penicilUJornns, 
  Rhtzo^ 
  

   clonium 
  spp., 
  Ulothrix 
  spp.; 
  (blue-greens) 
  Calothnx 
  spp. 
  

  

  