closeup on a bi-colored aster alike symphyotrichum novae-angliae flower against a green background

asteraceae flora nature plant symphyotrichum novaeangliae biology botanical closeup daisy family flower macro outdoors single wild wildflower wildlife bicolored aster alike against green background novae angliae gardening herb herbaceous beauty foliage new england michaelmas violet purple petal perennial pollination summer purity floral bi colored