Wild lettuce
Wild lettuce
Lactuca canadensis
Composite or Aster Family - Compositae or Asteraceae
Generally a tall herb (3 to 10 feet) with a terminal loose grouping of tiny, elongated yellow flower heads only about inch wide. Flower heads composed only of ray flowers. Leaves alternate, up to 1 foot long and quite variable in form; usually deeply notched, but may be lance-shaped and entire, but all stalkless or clasping the stem.
(Photographed at Eagle Lake - July 11, 2002)
  Pathology Images Inc. 2002 2002