Small American Aster
Symphyotrichum racemosum

f25 @ 1/400s, ISO:2000, Nikon D3S w 105mm macro

"Symphyotrichum racemosum," Wikipedia, the free encyclopedia. Symphyotrichum racemosum (formerly Aster racemosus) is a species of flowering plant native to parts of the United States and introduced in Canada. It is known as smooth white oldfield aster and small white aster. It is a perennial, herbaceous plant in the family Asteraceae. It is a late-summer and fall blooming flower. It reaches 30–90 centimeters (12–35 inches) (rarely to 100 cm (39 in)). It can grow in clumps with woody caudices or form colonies if its root system has developed long rhizomes. There are usually from one to three (1–3) erect glabrous (hairless) or glabrate (almost hairless) stems growing from the root base.
Francis A. Crane Wildlife Management Area, East Falmouth, Massachusetts