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state.  In  the  shallow  parts  of  the  pond  the  type  appeared 
as  well  as  S.  minimum  Fr.  S.  affine  which,  I  believe, 
was  originally  reported  from  here,  did  not  occur,  and 
I  am  inclined  to  think  it  must  have  been  reported  in 
error — McTaggart  Cowan,  jun.  I  doubt  if  this  deserves 
varietal  rank.  To  me  it  is  but  a  state ,  the  result  of 
growing  in  swiftly- running  water.  On  one  Moor  in 
Cornwall,  in  the  same  stream,  I  have  found  this  species 
in  every  stage,  from  the  erect  leaf  form  to  the  plant  with 
long  floating  leaves.  See  “  Flora  Cornwall,”  p.  453. — F.H.D. 
This  agrees,  in  its  small  heads  and  unusually  narrow  foliage, 
with  a  specimen  of  mine  from  Helston,  W.  Cornwall, 
endorsed  by  Mr.  Beeby.  He  pointed  out  that  the  alleged 
variety  longissimum  was  merely  a  deep-water  state. 
There  is  a  great  resemblance  in  the  foliage  to  S.  affine  ; 
but  the  fruit  is  decisive.  S.  simplex  Huds.,  forma _ E.S.M. 
S.  [affine  Schnizl.,  var.  microcephalum  Neum.  ?] .  Deep 
Pool,  Wicken  Fen,  Cambs.,  v.c.  29,  Sept.  9,  1910.  This 
plant  seems  to  be  some  form  of  natans  (affine)  on  account 
of  its  long  style,  base  leaves  with  the  back  convex  at  the 
base,  and  stem  leaves  with  inflated  sheaths.  Yet  it  has, 
like  minimum ,  only  one  or  two  male  heads,  and  few  female 
heads.  Since  in  Ascherson  and  Graebner’s  “  Mitteleur. 
FI.,”  I.,  p.  289,  under  the  var.  microcephalum  the  following 
points  are  given  1 “  small,  weakish,  leaves  2-3  mm.  broad, 
...  ?  head  2  ...  ^  heads  single  (or  two),”  I  have  tentatively 
called  it  this,  but  can  obtain  no  specipiens  to  compare 
it  with — A.  J.  Wilmott.  The  short  beak  of  fruit,  etc.  is 
conclusive  evidence  that  this  is  S.  minimum.  S.  affine 
is  not  likely  to  occur  so  far  south _ C.E.S.  Certainly 
S.  minimum  Fr.  ;  the  fruit  of  S.  affine  is  quite  different. 
Leaves  long,  owing  to  the  deep  water _ E.S.M.  [Later]  I 
quite  agree  now  that  the  plant  is  typical  minimum ,  with 
floating  leaves.— A. J.W.  (in  lit.). 
Potamogeton  lanceolatus  Sm.  Penrhos  Lligwy, 
Anglesey,  v.c.  52,  Aug.  3,  1910 _ Coll.  B.  H.  Goode.  Comm. 
G.  Goode.  Correct _ A.B. 
Zannichellia  palustris  L.  [var.  repens  (Koch)] .  In 
shallow  watei,  Hobson’s  Conduit,  Cambridge,  v.c.  29,  Oct. 
31,  1910 — A.  J.  Wilmott.  This  is  not,  I  believe,  Z.  repens 
Boenn.  (“  Prod.  FI.  Monast.  Westphal.”  1824,  p.  272) 
which  has  stouter  stems  rooting  at  the  nodes.  This 
