botany common spotted orchid Dactylorhiza fuchsii England english flowers frilly Great Britain green natural nature orchidaceae petals pink plant South Downs summer Sussex wild chalk conservation diversity ecology field flora habitat meadow orchids profusion pyramidal blue bushes clouds countryside downland grass hill landscape quality sky slope trees oak park parkland peace Quercus quiet rural shadow sunlight tree cloud direction fence footpath journey path peaceful route track trail way wire animal calf cow domesticated farm feed graze grazing hillside lamb livestock mammal sheep beautiful beauty pastoral tranquil view village woodland Downs panorama relax rest south valley fleece flock flood winter wool