beach coast line natural nature pattern ridge rill sand shore texture tidal tide water wet Arctium burdock England flower Great Britain plant Prickly spiky spiny summer Sussex wild church english flowers garden magnolia shrub spring tree wall broomrape dune ecology environment habitat Orobanchaceae parasite parasitic Spain algae blocks chalk cliff coastline face kent landscape rock tideline autumn clematis fall fuzzy hairy seedhead Surrey field flood meadow overflow reflection trees winter South Downs valerian Valeriana officinalis white anemones bank roadside sward verge Bignoniaceae Campsis climber glory Mexican trumpet vine orange petals red vine