autumn ecology ecosystem England english fall forest Great Britain green leaf leaves natural nature pond pool reflection Sussex trees water woodland black city flagstones footpath iron lamps London path pavement railing road sidewalk street wrought backdrop background branch brown color colour garden Morning poster shadow tree twig wallpaper winter yellow cloud crop cumulus down downland Downs farm field landscape meadow rolling sky uk view beauty bridleway calm countryside Gower hill panorama peace quality relax rural track tranquil wales way dusk evening Gloucestershire hedge light paddock quiet rest sunlight valley wood branches London plane Platanus × acerifolia scene shade shady trunk young distance fence post South Downs berries berry black bryony climber danger dangerous deadly Dioscoreaceae fruits plant poison poisonous red Tamus communis toxic wild