222 
X  Riviniana. — E.S.M.  The  stipules  and  narrow  petals 
point  to  V.  lactea ;  the  leaves — sub-cordate  at  the  base — 
suggest  V.  canina.  Probably  a  hybrid ;  possibly  only  an 
intermediate  form  between  the  two.  V.  lactea  x  canina. 
— E.S.G. 
V.  stagnina  x  canina.  (Ref.  No.  1378).  Woodwalton 
Fen,  Hunts.,  v.c.  31,  May  29,  1907.  Flowers  nearly  white. 
(Only  one  specimen  sent).  Coll. — E.  W.  Hunnybun. 
Comm.  E.  S.  Gregory. 
The  Woodwalton  Fen  violets  are  at  once  interesting 
and  puzzling.  In  addition  to  the  three  species,  V.  stagnina , 
V.  canina ,  b.  crassifolia,  and  V.  montana,  there  exists  a 
series  of  intermediates,  or  hybrids ;  some  of  these,  no 
doubt,  possess  characters  referable  to  the  three  types ; 
others  appear  to  be  crosses  between  twm  only  of  the  typical 
species.  In  naming  these,  for  club  distribution,  I  have 
treated  them  as  natural  hybrids  between  the  two  species 
they  most  nearly  approach  in  general  appearance  and  in 
such  characters  as  seem  important.  No  artificial  hybrids 
have  been  attempted  in  this  group  ;  there  can  be,  therefore, 
no  certainty  of  hybridity,  although  the  fact  of  artificial 
hydrids  having  been  successfully  made  by  the  late  Mr. 
Beeby  and  other  botanists,  among  the  Canina — Riviniana 
groups,  inclines  one  to  the  probability  of  hybrid  origin. 
V.  montana  forms  bushes  from  a  foot  to  one-and-a-half 
feet  high,  the  habit  ascending,  as  in  stagnina ,  not  spread¬ 
ing  as  in  canina  b.  crassifolia.  The  flowers — though  not 
so  rounded,  nor  so  small  as  those  of  stagnina — are  of  the 
same  pale  colour,  whereas  those  of  canina  are  of  a  bright 
blue  colour ;  the  corolla  spur  of  stagnina  and  montana  is 
greenish,  that  of  canina  bright  yellow.  The  leaves  of 
montana  are  long,  broad  and  unsymmetrical  in  outline ; 
those  of  canina  are  thick  and  punctate,  with  a  cordate 
base ;  those  of  stagnina  are  long,  narrow  and  pointed. — 
E.S.G. 
V.  arvensis  Murr.,  f.  segetalis  (Jord.).  Misson,  Notts., 
v.c.  56,  Aug.,  1908. — E.  &  H.  Drabble. 
V.  arvensis  Murr.,  var.  obtusifolia  (Jord.).  Spital, 
Chesterfield,  Derbysh.,  v.c.  57,  Aug.,  1908. — E.  &  H. 
Drabble. 
V.  arvensis  Murr.,  var. - .  Turnip  field,  Leicester 
Forest  East,  Leics.,  v.c.  55,  Aug.,  1909.  Plentiful :  a 
