calm England english Great Britain lake mere natural nature peaceful pond pool reflection spring Sussex tranquil trees water boundary branches field green line meadow row series tree blue bluebells flowers fresh Hyacinthoides wild wood woodland carpet Hyacinthoides non-scriptum ash background Fraxinus leaf leaves texture countryside gorse habitat heath heather heathland ling Ulex yellow bulb flower garden head Leucojum pendant pendulant petals spring snowflake white winter clearing margin Stellaria stichwort coast Cornish cornwall cowslips flora May Primula veris