880 
should  prefer  not  to  hazard  a  name  from  the 
present  material.  The  spikelets  consist  of  nothing 
but  the  barren  glumes.  Dr.  Long  should  send 
more  satisfactory  specimens. — A.  B.  Rendle. 
28th  Report  (1911—12),  p.  368. 
“  Azolla  filiculoides  Lam.  Botanique  (Encycl.  meth.). 
I.,  343  (1783).  Dyke  near  Horning  Ferry,  E. 
Norfolk,  v.c.  27,  Sept.  1911. — F.  Long.”  Dr.  Long 
has  kindly  sent  fresh  fruiting  specimens  of  the 
Azolla  which  he  sent  to  the  Club  last  year  from 
Norfolk.  I  unhesitatingly  name  these  specimens 
A.  filiculoides  Lamarck.  I  should  be  glad  to 
receive,  on  loan  or  otherwise,  fruiting  specimens, 
either  fresh  or  dried,  of  A.  caroliniana  Willdenow. 
The  latter  may  be  easily  identified  by  its  lying 
flat  on  the  water,  by  its  being  a  smaller  plant,  less 
branched,  and  thinner,  and  by  the  multicellular 
T-shaped  hairs  (or  glochidia)  in  connection  with 
the  sporangia.  A.  filiculoides  is  a  larger  and 
more  branched  plant,  of  a  paler  or  greyer  green, 
with  the  “  fronds  ”  thicker  and  projecting  above 
the  water,  while  the  glochidia  are  quite  or  almost 
non-septate.  Dr.  C.  H.  Ostenfeld  (in  “  New 
Phytologist  ”  xi,  127  (1912)  ),  of  Copenhagen,  was 
the  first  to  distinguish  A.  filiculoides  in  this 
country  from  A.  caroliniana.  Before  this  time, 
the  two  plants  in  this  country  had  been  confounded 
under  the  single  name  A.  caroliniana.^—  C.E.M . 
Ranunculus  heterophyllus  Weber,  var.  submersus 
(Hiern).  Rhine,  near  the  Severn,  Lawrence  Weston,  W. 
Glos.,  v.c.  34,  May  2,  1912. — Ida  M.  Roper.  Yes,  I  should 
so  label  it _ J.G. 
R.  heterophyllus  Fries  [forma  radians  Revel] .  Pond, 
Avonmouth,  near  Bristol,  W.  Glos.,  v.c.  34,  April  30,  1912. 
— Ida  M.  Roper.  Babington  considered  R.  radians  Revel  to 
be  a  form  of  R.  trichophyllus  with  floating  leaves  ;  Nyman 
puts  Batrachium  radians  (Revel)  Desml.  as  a  variety  of  B. 
diversifolium  (Schrank)  Hiern,  which  he  says  is  “perhaps 
