---Description--- It is a low-growing, annual herb, common in salt marshes and on muddy seashores all round the British Islands and was much used for this purpose.
(It; is; a low-growing, annual herb, common in salt marshes and on muddy seashores) Context(It is,List([18, 23))):(all; round; the British Islands)
It is,List([18, 23))
It all
is round
a low-growing, annual herb, common in salt marshes and on muddy seashores
the British Islands