arctic Dactylorhiza flowers Lofoten Islands natural nature northern norway norwegian orchids pink plants wild common Dactylorhiza fuchsii England english flower flowerhead Great Britain orchid spike spotted summer Surrey Dactylorhiza maculata Heath Spotted orchidaceae pale plant white bog Dactylorhiza incarnata early marsh orchid reserve Thursley beautiful beauty common spotted orchids Devil's Dyke hillside quality slope spring Sussex botany common spotted orchid frilly green petals South Downs downland field hill landscape meadow view