116 
Potamogeton  fluitans,  Roth.  Pond  in  Warboy’s 
Wood,  Hunts.,  v.c.  31,  Aug.  15,  1906.  (See  Jl.  Bot.  1897, 
p.  355). — E.  W.  Hunnybun  and  A  Fryer.  Yes. — A.B. 
P.  flabellatus ,  Bab.  River  Stour  (at  the  bridge), 
Holford,  Warwicksh.,  v.c.  38,  Aug.  20,  1906.— C.  H.  Waddell. 
Yes,  P.  interruptus,  Kitabel !  in  Scbult  “  Oest.  Flora,”  ed. 
II.,  p.  328  (1814)  =  P .  flabellatus  Bab.  “Man.  Brit.  Bot.” 
ed.  Ill ,  p.  343  (1851).— A.B. 
Sciipus  fluitans ,  L.  Port  Lotha,  Colonsay,  (swift 
streamlet  running  into  sea,  on  West  side  of  the  Island), 
v.c.  102,  Aug.  30,  1906. — A.  Somerville.  Yes. — A.  Ley. 
S.  rufus,  Schrad.  Scalasaig,  Colonsay,  v.c.  102,  July 
14,  1906. — A.  Somerville. 
Eriophorum  angustifolium,  Roth.,  var.  triquetrum, 
Fries.  Trevince  Moor,  Gwennap,  W.  Cornwall,  v.c.  1, 
May  18,  1906.  This  well-marked  variety  was  first  noticed 
on  British  soil  in  1905  by  Dr.  C.  C.  Vigurs,  who  found  it 
on  Trebiskin  Moor,  also  in  v.c.  1.  It  was  not  until  last 
year  that  Mr.  A.  Bennett  was  able  to  settle  its  identity, 
and  a  note  on  the  subject  will  be  found  in  “  Journ.  Bot.,” 
1906,  p.  279.  It  is  a  slender  and  rather  diminutive  plant, 
the  spikes,  even  when  fully  matured,  are  less  than  one- 
third  the  size  of  the  type,  and  are  either  sessile,  or  but 
very  shortly-stalked.  Perhaps  a  more  important  character 
is  that  triquetrum  is  quite  a  fortnight  later  than  angusti¬ 
folium  in  flowering. — F.  H.  Davey. 
Carex  helvola,  Blytt.  ( C .  curta  x  lagopina).  N.  Corrie 
of  Lochnagar,  at  3300  feet,  S.  Aberdeen sh.,  v.c.  92,  July 
21,  1906.  Associated  with  C.  lagopina ;  the  other  parent 
was  gathered  lower  down. — E.  S.  Marshall.  “  C.  canescens  X 
lagopina ;  very  characteristic.  — G.  Kukenthal  in  litt.  A 
grand  set,  beautifully  prepared,  as  are  all  Mr.  Marshall’s. 
— S.H.B. 
C.  elongata ,  L.  Ditch  near  Sandford  Mill,  Berks., 
v.c.  22,  June  20,  1906. — A.  B.  Jackson.  Right. — E.F.L. 
Yes,  fine  specimens  of  the  species,  usually  smaller.  It 
seems  to  answer  to  Kneucker’s  (f.  or  var.)  umbrosa  in 
Seubert — Klein  Exc.  FI.  Baden,  55  (1891).  I  have  lately 
seen,  through  Mr.  Somerville,  the  original  specimens 
gathered  by  W.  Wilson,  “Moss  Wilson,”  at  Birch  Farm, 
