Symphyotrichum boreale (Torr. & A.Gray) A.Löve & D.Löve
Family: Asteraceae
common northern bog aster, rush aster, slender white bog aster
Symphyotrichum boreale image
Merel R. Black  
Etymology: Aster: from the Greek aster, "a star," describing the radiate heads of the flowers
Plants: erect, perennial, 6"-32" tall forb; slender stems usually less than 1/10" thick
Leaves: mostly along the stem, linear, stalkless, usually slightly clasping, entire
Flowers: head 1" -1 1/3" wide with 20-50 white to pale blue rays; inflorescence usually wide, short clusters of 1 to a few heads; blooms July-Oct.
Habitat: wet, cold; bogs, meadows, shores
Conservation Status: Native