Common Name: great burdockScientific Name: Arctium lappa L.Family Name: Asteraceae (Compositae) - Aster or Sunflower FamilyIdentification NotesLife Cycleintroduced biennial, reproducing by seed Stemssecond year, reproductive, upright, course, branched, hollow Leaves leaves - first year narrowly to broadly ovate, heart-shaped base, wavy, large, hairy, form rosette; second year alternate on reproductive stems, small; petioles of larger leaves solid and furrowed above Flowers heads of red-purple disk (tubulate) florets; heads on long stalks and form flat-topped clusters, receptacle hooked bracts Seed Podsburs round, hooked bracts sticks to fabric and fur