close view of semi-double violet flower of china aster in mid august

annual aster august autumn beautiful bed bloom blossom botany bract bud callistephus china chinensis close cultivar disc double fall flora florescence florets flower foliage garden green greenery head herb herbaceous inflorescence leaf lilac lush meadow mid nature ornamental outdoors park petal phyllaries plant pollen purple ray season semi semidouble stem summer vegetation view violet