life
cycle - perennial, reproducing by seed and rhizomes
stems -
upright, smooth, often zig-zag growth
habit
leaves - lower ovate, sharply serrated, heart-shaped base on
long petioles; upper small, lanceolate, nearly entire on shorter
petioles leaves
flowers -
heads of 6 to 12 white ray (ligulate) florets surrounding yellow
(often turn reddish purple) disk (tubulate) florets; flat-topped
clusters flower heads