VEGETATION OF BLAKENEY POINT. 
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colour, the calyx is a pale yellowish-green. The writer has 
observed the same differences in flowers of Silene inflata and 
Lychnis vespertina, and in all cases the irregularity of distribu- 
tion seems to preclude the possibility of soil influence. 
Another member of the Caryophyllacece which exhibits 
interesting variation is Arenaria peploides. As is well known, 
one of the chief distinctions which separates this genus from 
that of Stellaria is the entire character of the petals in the 
former, and their bifurcation in the latter. At Blakeney, 
however, the petals of the Arenaria peploides frequently shew 
a deep notching — a feature that may extend to all or part of 
the flowers on a plant, and is not always constant for the 
individual petals of the same flower. This variation would 
appear to be influenced by seasonal factors, since it is most 
marked in the early part of the flowering period, and so far as 
observations go is not found in the later phase. 
The prevalence of Senecio Jacobcea upon the dunes has 
already been a matter of comment, and amongst the numerous 
individuals there seems to be a marked variation in the form of 
the radical leaves. In some of these the terminal portion is 
almost undivided, and only a few lateral lobes are present lower 
down, whilst in those borne by other plants the leaf as a whole 
is cut up in a pinnate manner and each lobe is itself pinnatifid, 
resulting in the normal parsley-like appearance of the margin. 
Intermediates between these two conditions can often be found, 
which, however, does not of course preclude the possibility of 
the two forms being distinct varieties. 
In the genus Salicornia, two species call for special mention, 
of which one is S. disarticulata, easily distinguished by the 
solitary character of the flowers, in place of the groups of three 
or more found in the other species. The second form which 
has just been described, S. dolicostachya (C. E. Moss, New 
Phytologist, Dec., 1912), occurs in two places at Blakeney, 
viz., on the Samphire Marsh near the Hood, and was found 
by the writer some three years ago on a denuded marsh at the 
south side of the estuary. This form is much branched with 
long spikes and, unlike other annual species, has the lateral 
flowers of the group separated by the median. 
