Horseweed or Canada Fleabane
Horseweed or Canada Fleabane
Conyza or Erigeron canadensis
Aster or Daisy Family - Asteraceae
Numerous small ( about 1/8 to inches long) flower heads with barely noticeable white upright ray flowers and more numerous yellow disk flowers. (Photographed late August)
A tall (2 to 7 feet), upright plant of roadsides and fields with many, narrow, alternate leaves (lower ones may be toothed), a hairy stem and a profusion of branching flower stalks from the upper leaf axils.
  Pathology Images Inc. 2000 to 2002