Boraginaceae botany Cynoglossum officinale downland England english field flowers Great Britain green Hound's tongue meadow natural nature South Downs summer Sussex wild alone countryside fenced grass landscape lone oak pasture protected Quercus single stud farm tree bavaria clouds cold dramatic sky farmland fence fences fields germany green fields horse meadows Rolling Hills trees wind windy winter Alpine Bistort arctic Bistorta vivipara Lofoten Islands norway norwegian Persicaria Polygonum Rhinanthus minor white yellow yellow rattle rural Sussex split-rail wooden coastal Cornish cornwall exercise flora footpath path rock rocky spring trail walk atmospheric big horizon idyllic leisure outlook park peaceful recreation rest sky sun sunlight bloom blooming blossom brick corn detail flower garden light petal plant poppie poppy red season stone wall