Sand includes beaches and dunes, and it has an interesting range of specialist plants. I have seen sea beet on the Anglesey beach. Beta vulgaris maritima is a plant with a rich genetic potential, and thus it has become the ancestor of chard, beetroot, sugar beet ,mangel-wurzel and perpetual spinach. Unlike several other plants,it is not rare, but foragers should take only a few leaves and desist from digging up the root, doing which is illegal in Britain, for you are not permitted to dig up a wild plant except on your own land or with the landowners' permission.
Crambe martima, sea kale, is quite rare. The example that you see above is growing on sand, but I suspect there to be pebbles below it.Sea kale likes a pebble beach, but as pebbly beaches with vegetation are globally rare, sea kale is too rare for anyone to be permitted to pick.
Sea holly is to be found in dunes, and if you look below you will see it surrounded by the ubiquitous marram grass, which is intended for dune stabilization, as it has a strong root network that binds the dunes together. As with sea beet, while it has edible roots it is now not eaten, as uprooting it on public land is forbidden by law, and as it is quite rare no one needs to eat it. Besides,its lovely blue flowers bless the shore with their beauty.
Found on the upper shore and in wasteland near to the beach are several members of the oraches, which are often abundant and have edible leaves. Members of the goosefoot family, there are several species that are hard to tell apart unless you are an expert. But they are the kind of unobtrusive plant that you see on the shore but rarely give much attention.
The same goes for the rockets, which are relations of the salad rocket that grows in gardens. Sea rocket,Cakile maritima, grows in sand dunes, while perennial wall rocket,Diplotaxis tenuifolia, grows on waste ground near the coast.Both are common and edible,but sea rocket has a slightly bitter taste to it. However, salads sometimes need bitter herbs.
My final plant is sea buckthorn, hippophae rhamnoides. A shrub with beautiful orange berries, you are probably going to look, admire and not touch, it is thorny and like all plants that is said to be good for you, tastes unpleasant. Some people say that the berries are a functional food, which means that you will not enjoy eating them. Very sour tasting, so I am assured, but the chef Hugh Fearnley Whittingstall made a party drink partly from the berries, so there can be some use for them other than to feed sea birds. But I will give it a miss, the birds can have it.