VEGETATION OF BLAKENEY POINT. 
537 
these patches a few scattered Obiones mark the advance-guard 
of the enemy. 
The older marshes are for the most part a thick carpet of 
Obione from one to two feet in height, amongst which the only 
plant which appears to grow with success is Glyceria maritima; 
Plantago and Aster are also present, but scattered and of rather 
rare occurrence. 
The low patches unoccupied as yet by Obione, which are 
found near the centre, as in the fifth marsh, chiefly differ from 
those of the first in the abundance of Plantago maritima, and 
in the presence of a slight mulch of Pelvetia. The following 
is a list of the species of these patches, shewing their relative 
frequencies : — 
Plantago maritima (v.c.) 
Statice Limonium (v.c.) 
Armeria maritima (v.c.) 
Triglochin maritimum (c.) 
Spergularia media (c.) 
Salicornia europaea (r.r.) 
Glyceria maritima 
Obione portulacoides 
Nearly all the marshes are bordered where they abut upon 
laterals by a fringe of Artemisia maritima of varying width, 
the members of which frequently intermingle with those of the 
lowest or Suceda zone of the lateral hooks. 
For the latest stages of salt marsh formation it is necessary 
to pass across to those on the opposite side of the Cley channel. 
Here, where the marshes are of much higher level, the increase 
of the Glyceria sward is a marked feature, as also the substitu- 
tion of such species as Salicornia ramosissima, S. gracillima, 
S. disarticulata for the Salicornia europcea of the earlier 
phases. 
The following list is fairly representative of nearly all the 
saltings on the far side (south) of the channel : — 
Armeria maritima (v.c.) 
Glyceria maritima (v.c.) 
Spergularia media (c.) 
in patches 
