Alpine Bistort arctic Bistorta vivipara flowers green Lofoten Islands meadow norway norwegian Persicaria Polygonum Rhinanthus minor summer white wild yellow yellow rattle blue color colorful coquelicot corn poppy field fields flower flowering plant holiday holidays Natural landscape plant plants poppies poppy sky sky fresh summer day sunny day warm wildflower coastal Cornish cornwall England english exercise flora footpath Great Britain natural nature path rock rocky spring trail walk cloud clouds countryside environment forest grass landscape outdoors rural scene scenery tree trees wildflowers wood woodland woods agriculture architecture bags building farm full hay home house plastic sacks dainty delicate fresh Lychnis flos-cuculi marshy petals pink ragged robin stems Sussex