life
cycle - native perennial, reproducing by seed
stems – upright,
tall, multiply from base, branching above, becoming woody below,
fine pubescent to hairy, sometimes hairless below, often reddish
to dark red or purple growth
habit 1, growth
habit 2
leaves – opposite
below and alternate above, pinnately divided 3 (sometimes 3
or 4) times in fine narrow linear segments, granular dots present,
small leaves in axils common, foul smelling leaves
flowers – heads
of greenish white disk (tubulate) florets, small and inconspicuous;
large branched panicles above