VEGETATION OF BLAKENEY POINT. 
511 
Psamma arenaria (occ.) 
Ranunculus repens (v.r.) 
Rumex trigranulatus (v.c.) 
Rumex acetosa (v.r.) 
Sagina apetala (r.) 
Sagina maritima (occ.) 
Sagina procumbens (loc.) 
Salicornia disarticulata (v.r.) 
Sedum acre (c.) 
Senecio Jacobsea (r.) 
" Senecio vulgaris (forma) (c.) 
Silene maritima (v.c.) (including several forms). 
Sonchus arvensis v. littoralis (c.) 
Sonchus oleraceus (f.) 
Statice binervosa (f. on slopes of distal end) 
Statice Limonium (v.r.) 
Stellaria Boraeana (occ.) (Suaeda Islands). 
Suaeda fruticosa (v.c.) 
Triticum junceum (f). 
Triticum pungens (r.) 
Tussilago Farfara (r.) 
V.C. — very common ; c. = common ; f. = frequent ; 
occ. = occasional; loc. = local; r.r. = rather rare; r. — rare; 
v.r. — very rare. The more important species marked " 
The most striking feature which these shingle plants have in 
common is their low growth (Fig. 13), a habit that, apart 
from the shrubby Suoeda, which except in sheltered situations 
sheds its leaves in winter, is universal. The majority grow 
close to the shingle throughout their life history, and some, 
like Arenaria, Silene, etc., attain added protection by the 
aggregation of their shoots to form a mat-like surface. 
Of those which attain any height the greater period of the 
year is passed in the rosette condition (Sonchus, Glaucium) , 
or with the young leaves protected by those which are dead 
and withered (Rumex)-, it is only during the milder months 
that these species send out a vertically elongated axis for the 
