The creeping or trailing type is a common one, as in the English bindweed (Convolvulus arvensis), which has also a tendency to climb, and Calystegia Soldanella, the sea-bindweed, the long creeping stem of which forms a sandbinder on English seashores; a widespread and efficient tropical sand-binder is Ipomaea Pes-Caprae.
The sepals are leafy and persistent; the corolla is generally divided into a longer or shorter tube and a limb which is spreading, as in primrose, or reflexed, as in Cyclamen; in Soldanella it is bell-shaped; in Lysimachia the tube is often very short, the petals appearing almost free; in Glaux the petals are absent.
Sea spurge Euphorbia paralias and the nationally scarce dune fescue Vulpia fasciculata are frequent, while sea bindweed Calystegia soldanella is very local.
Sea Bindweed (Convolvulus Soldanella) - A distinct trailing species with fleshy leaves; flowering in summer, pale red, and handsome in the rock garden, if planted so that its shoots droop over stones.
The blooms are of a deep blue, nodding, and shaped like those of a Soldanella, and it has silver-grey leaves.