protected carline thistle of biosphere reserve rhoen at bloom

acaulis biosphere bloom blooms carlina carline details dicotyledonous dry dwarf europe flowering flowers flowerheads germany grass ground growing growth image known late meadow native natural nature patterns perennial plant reserve rhoen rhon season seasonal silver spiny stemless strawy structure structures summer sunlight sunny texture textures thistle topview vegetation flower head leaf rosette basal pinnatilobate leaves silvery-white ray florets pasture wildflower protected protection conservation pastures