624 
NOTES ON SOME RARER NORFOLK PLANTS. 
the only difficulty being the selection of parallels that, by 
creating the least possible disturbance in work of the past, may 
be put forward with reasonable expectation of acceptance by 
those concerned. We therefore submit the following data 
which we have used to guide us in our work in recent years : — 
1° 17' east longitude as the boundary of the Eastern Division. 
This leaves the major portion of Norwich, Cromer and Harleston 
in East Norfolk. 
0° 41 1 east longitude as the boundary of the Western Division. 
52° 38 1 north latitude as the line separating the North Central 
from the South Central Division. 
The official recognition of this or some similar interpretation, 
where accuracy requires it, will remove the principal weakness 
from a system which, in the absence of naturally defined areas, 
has much to recommend it. 
Recent enquiry has shown that Utricularia intermedia , 
Hayne, has not been discriminated from JJ . ochroleuca, Hartm., 
and that British records for the former need revision. In the 
“Journal of Botany,” 1912, p. 287, Mr. Arthur Bennett states 
that in his collection he has U. intermedia from Galway and 
Donegal, in Ireland, and one English specimen gathered in 
Norfolk by Messrs. Groves. During visits to most of the 
Norfolk stations in 1912 it was noticed that in May the oval 
shape retained by the germinating winter bud indicated inter- 
media as the prevailing species. The great rainfall of August, 
following a wet summer, flooded the low lands and favoured a 
secondary growth in U tricularia ; hibernating buds of the year 
developed, bearing sharply serrated leaves, intermediate in 
character between normal foliage leaves and densely ciliated 
bud leaves ; in many cases a few scattered bladders were 
produced on the leaves as well as on the specialised subterranean 
stems ; anchored in deep water, the plants sometimes assumed 
an erect habit. 
At Swannington, a swamp containing Menyanthes trifoliata, 
Potentilla palustris, and Hypericum elodes, dominated by 
J uncus subnodulosus, was in October lying under twelve inches 
of water, and had an abundant growth of U. intermedia of 
