Anthyllis vulneraria coastal cornwall England english flowers Great Britain herb kidney Leguminosae natural nature vetch wild yellow color colour compositae ecology flora Greece Greek green pink plants salsify spring white petals plant primrose Primula vulgaris Sussex mediterranean olive papaver poppies poppy red roadside tree cowslip hybrid Primula bank hedgerow Stellaria stichwort verge dainty Oxalidaceae oxalis sorrel wood woodland ancient arch architecture hills hillside historical Mystras old ruins stone