Armeria beach coast dune ecology flora flowers habitat natural nature pink plant sand soft Spain summer thrift wild carmine flower flowerhead garden green norway norwegian petals rosa rose coneflower daisies daisy Echinacea grow head perennial petal white exotic innocence innocent orchid purity quality simplicity spray tropical countryside England english gorse Great Britain heath heather heathland ling spring Sussex Ulex yellow Aesculus carnea Hampshire Hippocastanaceae horse chestnut red tree alpine altitude Austria blue gentian high remote trumpet agave Cacti cactus Catalan catalonia Catalunya enormous huge large spanish spike Greece Greek hood Serapias tongue orchid arctic Dactylorhiza Lofoten Islands northern orchids plants