Shingle beach driftlines

The lowest level of the supralittoral, just above the normal tide limit, where drift material accumulates and the shingle may be rich in nitrogenous organic matter. Vegetation, if present at all, is very open and composed of annuals or, particularly by the Mediterranean, especially the east Mediterranean, of annuals and perennials, occupying accumulations of drift material and gravels rich in nitrogenous organic matter; characteristic are [Cakile maritima], [Salsola kali], [Atriplex] spp., [Polygonum] spp., [Euphorbia peplis], [Mertensia maritima], and, particularly in Mediterranean formations, [Glaucium flavum], [Matthiola sinuata], [Matthiola tricuspidata], [Euphorbia paralias], [Eryngium maritimum].