Pineapple-weed
Pineapple-weed
Matricaria matricarioides
Daisy Family - Asteraceae
  Pathology Images Inc. 2002 - 2003
A low (6 to 12 inches tall), upright plant with yellow to yellow-green cone-like flower heads at the end of branches. Flower heads with green, upright bracts but no ray flowers. Leaves alternate and much divided; pineapple-type odor when bruised.
Photographed at Ottawa -- August 4, 2003